WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance

By David Anderson, Ruhani Rabin, Team Updraft

July 03, 2024

WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance Plugin

Get caching and more with this powerful cache plugin. Cache, optimize images, clean your database and minify for maximum performance.

MORE THAN A CACHING PLUGIN

WP-Optimize is trusted by more than 1 million WordPress website owners to boost performance and reduce page load times to improve your site’s user experiences and SERP rankings in Google.

It does this in four clever ways:

1. It caches your site

Caching is the process of storing a temporary HTML version of your site on the server so it can be retrieved more quickly for the user.

It’s a sure-fire way to ensure web pages load at lightning-fast speed. Turn it on in just one click.

2. It compresses images

Large images can really impact page speed load times. WP-Optimize makes it easy to identify and compress images to your preferred lossy / lossless settings in a couple of clicks.

3. It cleans the database

Your WordPress database stores everything that you need, plus some things that you don’t. WP-Optimize cleans and optimizes the database to speed up your site and save server resources.

4. It minifies

On top of its three main features, WP-Optimize Cache also has the more advanced minification feature.

Together with caching, minification dramatically improves performance and page speed load time.

1. CACHE YOUR SITE

Turn on caching in just one click:

WP-Optimize automatically and optimally configures itself for your WordPress site. Turn it on in one-click or refine its settings if you prefer.

More cache features:

Cache preloading: This feature emulates a visit to your site, meaning cached files are served straight away, speeding up your site from the very first visit.
GZIP Compression: When the server isn’t configured to do so, WP-Optimize delivers HTML, CSS and JS files to the user’s browser as smaller, compressed files, reducing the size of pages and style sheets by up to 90%!
Preload key requests: Recommended by Google to improve page speed times. Critical resources (things like font files) get loaded first, so the page loads much faster [Premium].

Use cache settings to:

Serve cached content to logged in users: Turn this on if content stays the same for logged in users (or turn on and exclude URLs where content does change e.g. my account areas).
Exclude content from cache: Exclude by URL, conditional tags, browser agent strings or list cookies that should prevent caching when set (advanced user settings).
Deliver device-specific cache: Serve separate cache files to desktop and mobile devices . This ensures that responsive features e.g. desktop and mobile menus are cached separately and served correctly.
User per role cache: Useful if your website delivers different content to different user roles. e.g. an e-commerce site that displays different content to resellers or consumers [Premium].
User specific cache: Serves separate cache files to individual users. Useful for websites with personalised content e.g. Learning management systems [Premium].
Cache purging permissions: Select which user roles are allowed to purge the cache e.g. admin only or perhaps a ‘teacher’ role in an LMS setting only [Premium].

2. COMPRESS IMAGES

Lossy or lossless compression options: Choose between maximum space saving, best image quality or somewhere in-between.
WebP conversion: Recommended by Google, WebP can achieve up to 34% smaller file sizes compared to JPEG and up to 26% compared to PNG.
Auto-compress: Check a box and every new image you upload will automatically be compressed to your preferred lossy / lossless settings.
Bulk compression: Compress every existing image on your site with the press of a button.
Restore original: Gone too far? Revert images back to their original in one click.
Retain EXIF image data: Check a box to retain EXIF image data during compression.
Lazy Load: Webpages load much faster by loading web parts gradually, when they’re needed vs simultaneous loading of everything, all at once [Premium].
Delete orphaned images: Identify and delete unused images from your WordPress website, saving disk space [Premium].
Delete unused image sizes: WordPress creates multiple sizes for every uploaded image causing the uploads folder to become bloated. Scan for image sizes not in use and remove them to save further disk space [Premium].

3. CLEAN AND OPTIMIZE THE DATABASE

Cleans-up database tables, post revisions, auto draft posts, trashed posts, spam, trashed comments and more. Choose what to optimize or it’s one click to clean out the lot.

Schedule clean-ups: So you can set and forget. Choose from daily, weekly, fortnightly or monthly.
Flexible clean-up schedules: You may wish to optimize database tables more frequently than you remove unapproved comments (for example). Choose the specific time and day when tasks should run [Premium].
Retain a set number of weeks’ data during clean-ups: Just in case you need to retrieve something.
Back up before clean-ups: If you delete something you shouldn’t, restore it in a couple of clicks with UpdraftPlus.
Power tweak – Turbo boost for WooCommerce: Unique to WP-Optimize, this power tweak boosts performance by replacing a slow query in WooCommerce with two much more efficient queries. E-commerce sites transacting high numbers of orders stand to gain here [Premium].
Power tweak – Boost performance by indexing the postmeta table: This unique power tweak works by allowing the WordPress postmeta table to be indexed, improving performance [Premium].

4. MINIFY AND COMBINE HTML, CSS AND JAVASCRIPT

Minify in just one click: Minifies HTML, JavaScript and CSS. Toggle on or off or customise each one under ‘settings’.
Customise minification: Minify only (removing unnecessary code e.g line breaks and white spacing) or minify and merge. Apply the same or different settings to HTML, CSS and JavaScript.
Asynchronous loading: Choose non-critical CSS and JavaScript files to load in the background and independently of other resources e.g. analytics or pixel scripts. Loading asynchronously eliminates render blocking and improves page speed.
Exclude files from being minified: Specify CSS and JavaScript files to exclude from minification.
Optimize fonts: Optimize Font Awesome and Google Fonts. Inline the font files, inherit from CSS settings or load CSS / Javascript asynchronously instead.
Preload assets: WP-Optimize visits each web page on your site so the code is minified and preloaded for real life users, right from their very first visit.
Preload key requests: Recommended by Google to improve page speed times. Critical resources (things like font files) get loaded first, so the page loads much faster.

WHY WP-OPTIMIZE?

It’s brought to you by UpdraftPlus, the team behind the world’s most trusted backup, migration and restoration plugin.
It’s easy to use.
It packs a punch for a free plugin.

WP-Optimize brings the best cache and optimization technology together into one single, seamless plugin to make your WordPress site fast, lean and efficient.

PREMIUM FEATURES AT A GLANCE

Our free version of WP-Optimize Cache is great, but we also have an even more powerful Premium version with extra features that offer the ultimate in freedom and flexibility:

Multisite Support: extends database optimisations so they function for multiple WordPress sites at a time. If you manage more than one website, you will need WP-Optimize Cache Premium.
Flexibility and Control: gives you the power to optimize select individual tables or a particular combination of tables on one or more WordPress websites, rather than having to optimize all database tables.
Deleting unused and unwanted images: removes orphaned images from your WordPress site, plus images of a certain, pre-defined size.
Sophisticated Scheduling: offers a wide range of options for scheduling automatic optimization. Specify an exact time and run clean-ups daily, weekly, fortnightly or monthly and perform any number of additional once off optimizations.
Seamless Graphical User Interface: for superb clarity in scheduling and managing of multi-site optimizations.
WP-CLI support: provides a way to manage optimizations from command-line interface if you have lots of sites
Lazy Loading: load only the images and part of a web-page when it is visible to the user so they can see something very quickly.
Optimization Preview: gives users the ability to preview, select and remove data and records available for optimization from the database.
Preload key requests: preload assets such as web fonts and icon fonts, as recommended by Google PageSpeed Insights.
Premium support – caching is one of the most complex things you can do for a website, so premium support offers you peace of mind there’s someone to talk quickly to if you need any technical answers or help configuring the optimizations of cache settings for your website.

Translations

Translators are welcome to contribute to the plugin. Please use the WordPress translation website.

Installation

There are 3 different ways to install WP-Optimize Cache, as with any other wordpress.org plugin.

Using the WordPress dashboard

Navigate to the ‘Add New’ in the plugins dashboard
Search for ‘WP-Optimize’
Click ‘Install Now’
Activate the plugin on the Plugin dashboard

Uploading in WordPress Dashboard

Download the latest version of this plugin from https://wordpress.org/plugins/wp-optimize/
Navigate to the ‘Add New’ in the plugins dashboard
Navigate to the ‘Upload’ area
Select the zip file (from step 1.) from your computer
Click ‘Install Now’
Activate the plugin in the Plugin dashboard

Using FTP

Download the latest version of this plugin from https://wordpress.org/plugins/wp-optimize/
Unzip the zip file, which will extract the wp-optimize directory to your computer
Upload the wp-optimize directory to the /wp-content/plugins/ directory in your web space
Activate the plugin in the Plugin dashboard

Screenshots

Cache - plugins comparison benchmark
Database optimization
UpdraftPlus running a backup before an optimization proceeds
Table Report
Image compression
Main cache screen

FAQ

Isn’t it better to use a dedicated caching plugin to cache my site?

We’ve built WP-Optimize Cache around the most advanced and powerful caching technology. Our caching tests and feedback from real-world users show that the caching feature alone can make your site faster than any other cache plugin or optimization. See these speed test results.

Is optimizing my database safe?

Yes; optimizing does not involve any “tricks” or poking around in dangerous ways. It involves running routine clean-up operations using well-defined, common MySQL commands. Nevertheless, we always recommend backups, which cover every possibility; not just database malfunctions, but hackers, human errors, etc. We recommend UpdraftPlus.

What savings can I expect to make?

This is a “how long is string?” sort of question. It depends completely on your site – how big it is, how many users interact on it, how long it has been running, and when you last optimised it. However, the savings and speed-ups can be substantial; it is always worth making sure that your database is optimised.

How do I get support?

In our support forum, here: https://wordpress.org/support/plugin/wp-optimize/

How do I use WP-Optimize Database Cleaning?

WP-Optimize does not make large savings on my database

This is rare; it’s probably because you’re with a shared web hosting company that doesn’t allow scripts to run an optimize command via SQL statements (SQL “OPTIMIZE” instruction). Please consult your web hosting company on this matter.

Is the plugin tried and tested?

Yes – WP-Optimize Cache is WordPress’s #1 most-installed optimisation plugin, with over 800,000 users and a pedigree going back over 8 years.

Does WP-Optimize support InnoDB tables?

WP-Optimize will disable some features if it detects InnoDB tables. Optimization of the database tables on-disk is not available, but other clean up features would work.

Can you help me restore my database?

Not unless you have an existing backup. Please ensure that you make a backup of your entire database before using WP-Optimize for the first time, and when you upgrade to a major new version of it. We recommend UpdraftPlus.

Are there any bugs in this plugin?

The plugin is an ongoing work; that means that it is impossible to rule out unforeseen situations and bugs. So I would recommend you to test it out on your local system or make a backup of your database (just to be extra careful).

How do I stop transient options from coming back automatically each time I clear them?

When WordPress uses a particular transient, that specific transient is re-created automatically. So, it’s normally for ones which are in active use to gradually re-appear. The best way to keep things optimal is to clear the transient options on a scheduled basis. For example, WordPress may create 50 transient option in a week. If you schedule WP-Optimize Cache to clear these options on a weekly basis, you’ll have far fewer building up.

The table size shows wrong / Not optimizing

Please check your database for corrupted tables. That can happen, usually your web hosting company can run the repair command on the db.

Which WordPress and PHP versions are supported?

To use all features in the plugin, a minimum of version WordPress 4 with PHP 5.3 are required. But we do recommend to use the latest version of WordPress. Using PHP 7+ is also highly recommended, as our caching feature will work even faster.

Which optimisation will make the biggest difference?

This depends on your setup (theme, number and quality of plugins used, etc…), but generally, caching will make the biggest visible difference to your website’s performance. Indeed, the cache functionality bypasses most of WordPress code to serve your pre-optimised cached pages directly to your visitor, significantly increasing the speed.

What is caching, or page caching?

“Caching”, from Wikipedia: “In computing, a cache is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. A cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot.” — WP-Optimize cache does this by saving the page computed by WordPress on the disk. When a user visits a page, WP-Optimize will serve the cached page before WordPress is loaded. If the page wasn’t cached before, it will be computed by WordPress, and WP-Optimize will then save the result to the cache.

Why should I use a caching plugin on my website?

You think your site is fast without caching? A caching plugin will make your website even faster. A faster cached website will increase SEO, it will improve your visitors experience. Caching will also save your server’s resources.

Is the WP-Optimize page cache compatible with Gutenberg and WordPress 5.0+?

Yes, your Gutenberg pages will be cached, as well as those created with page builder plugins such as Elementor.

How do I know my webpage is being cached (or why it isn’t)?

If cache is enabled, and in order to see if your page is cached, use the “View Source” function in your web browser to view the page source. To find caching information, scroll down to the bottom, and you should see a line added by the cache: <!-- Cached by WP Optimize - https://getwpo.com - Last modified: Sat, 20 Jul 2019 21:17:19 GMT ->
However, note that if you are using a further service that minifies HTML (e.g. Cloudflare), then this line may have been removed. Another method is to inspect the contents of the directory wpo-cache inside your wp-content directory. <a href=”https://getwpo.com/faqs/how-do-i-know-my-webpage-is-being-cached/>Further information can be read here
Also note that if you do not preload the cache, a page or post will have to be visited once for the cache file to be generated.

How do I configure the page cache?

Go to WP-Optimize -> Cache and enable caching. For most people, that will be enough. If you run an e-commerce, have a custom login page or any page that has dynamic content, you might want to exclude certain urls from the cache. See Advanced caching options in our cache documentation to know more on excluding an URL from the cache.

Is the caching feature compatible with e-commerce plugins?

Yes, caching with WP-Optimize Cache allows you to safely cache your products, with plugins like WooCommerce or Easy Digital Downloads, or any e-commerce that uses DONOTCACHEPAGE to exclude sensitive pages from caching (e.g. my account, cart or checkout pages).

Is the caching feature compatible with multilingual plugins?

Yes, WP-Optimize works with popular multilingual plugins like WPML or Polylang. However, it’s important to note that when using WP-Optimize with multilingual plugins, the URL format for different languages should not include any query parameters, for example https://example.com/?lang=en. Instead, it should be in a pretty permalink format, such as https://example.com/en.

Do I need a special setup to use the caching feature?

No, if WordPress works properly, WP-Optimize will be able to cache your pages and posts.

Can I use the page caching feature together with another cache plugin?

No, because both cache plugins would need to use the drop-in plugin advanced-cache.php. If you turn off caching on WP-Optimize Cache, you can use any other caching plugin and still use the other features of WP-Optimize. But we do recommend using our caching solution.

Is WP-Optimize caching compatible with Cloudflare?

Yes! No special cache configuration is needed. Page caching on the WP site (that done by WP-Optimize Cache) is independent of proxy caching (e.g. Cloudflare) – you can use both, or neither, and they will complement each other and not interfere.
Just one thing to note – Cloudflare will strip out the special HTML comment at the bottom of the source of a page that is helpful to confirm that page caching is working, so, don’t be confused by that – it’s absence doesn’t indicate the cache is not working.

Can I empty the cache automatically when performing a custom action?

Yes, you can trigger a cache purge action using WP-Optimize Cache public functions. If you want to clear the whole cache, use the function wpo_cache_flush(). If you want to clear the cache files for a specific page or post, use WPO_Page_Cache::delete_single_post_cache($post_id);. Those cache options are available after WP action plugins_loaded.

Will the comments work even when page caching is enabled?

Yes, when using WordPress’ commenting system, your users will still be able to post comments. Every time a comment is approved, the cache for that page or post will be cleared, allowing the next visitor to see an up to date list of comments.

What is “cache preloading”?

Usually, a page is cached when a user visits it. So the first user visiting won’t be served a cached version of the page, and will wait longer than the next users. The cache preloading functionality will go through all your pages and posts, and simulate a visit by a user, allowing WP-Optimize to cache the pages before anyone visits them. Your first visitor will thus be served a cached version of the page, increasing its performance.

What frequency should I choose for the cache preloading schedule?

Choosing a frequency for the cache preloading schedule will depend on factors such as the frequency at which the website content is updated, the number of pages in the cache, the resources of the server and more.
For example a site with hundreds of pages will require more resources to preload its cache. So choosing a high frequency will mean that the cache will be recreated often, and the resource usage will be higher.
On a website where updates aren’t as frequent, you can even disable the cache preloading schedule, or set a high cache lifespan and set the cache preloading schedule to follow it.

How do I cache only the home page?

Add /.+ to the cache option “URLs to exclude from cache” on the advanced settings tab.

How do I prevent WP-Optimize Cache from caching a certain page

To prevent a page from being cached, you can add the URL to the field “URLs to exclude from cache” in the cache “Advanced settings” tab. If you are developing a plugin and want to prevent a page from being cached, you can define the “DONOTCACHEPAGE” constant on the pages you need. Any request where “DONOTCACHEPAGE” is defined will not be cached.

Is the caching feature of WP-Optimize free?

Yes the caching feature is free. You will always be able to cache your website for free using WP-Optimize and we are constantly working on improving the existing cache feature. We will add more caching options to the free version and develop more specific caching options in the premium version to enable you to taylor the caching functionality to your needs.

Where does WP-Optimize Cache store the cached files?

The cached files are stored in the common “wp-content/cache” folder, inside a “wpo-cache” folder. Removing the “cache” folder will delete all of WP-Optimize’s cache, as well as those from other plugins.
Deleting the “cache” folder is generally safe, as those cached files will be regenerated.

How do I disable caching?

Go to WP-Optimize settings > Cache and toggle the “Enable page caching” option to on/off.

Will caching slow down my server?

No, caching will actually reduce the load on your server, by reducing the amount of PHP and mysql used. You might see a peak in resource usage when using the cache preloader, as this functionality will create the cache files for all your pages in a short amount of time. But once this is done, performance should increase and the load on your server will decrease. Every single major site uses caching to serve cached pages faster by using fewer resources.

Can I make certain parts of the page stay dynamic when cache is enabled?

The cached page is sent to the user before most of WordPress was loaded. The plugins aren’t loaded yet, making it impossible for them to change the cached content at every request.
So at the moment if you want to keep parts of your page dynamic (e.g. adverts, widgets, shopping cart…) AND keep it cached, you will have to use custom solutions using javascript and AJAX to fetch those dynamic parts from the server.

How do I delete the WP_CACHE define from wp-config.php?

WP-Optimize Cache will remove the “WP_CACHE” constant from wp-config.php when you disable page caching, or when you deactivate the cache plugin. If you need to remove it manually, you can use FTP to edit wp-config.php and delete the line define (‘WP_CACHE’, true );
If page caching is still enabled in the settings, WP-Optimize Cache will attempt to add the line again, as it is required for the caching functionality to work.

My filesystem is not writable to increase security. What do I need to do to make it compatible with the caching functionality?

WP-Optimize caching feature needs write access to the ‘wp-content/cache’ folder, as this is where the cache files will be stored. It also needs to define the constant ‘WP_CACHE’ in ‘wp-config.php’, it will need access once to ‘wp-content/advanced-cache.php’, as well as to the folder ‘wp-content/wpo-cache’ to write the cache settings.

How do I change file permissions?

If you need to change file permissions to enable caching, you can follow the instructions on this page https://wordpress.org/support/article/changing-file-permissions/

What is the maximum number of pages I can cache?

There is no limit to the number of pages you can cache. The only limit is the space on your server and the maximum number of subdirectories allowed by your server, as caching will write files in subdirectories following the permalink structure.
If you were to reach a caching limit, it probably means that your server is not fit for the size of your website and caching needs.

How do I serve cached pages to people using a phone or tablet?

You can generate a separate cache by selecting “Generate separate files for mobile devices” in the page cache settings. This cache setting is only necessary if you use a specific theme for mobile devices, or for certain AMP plugins.

Does WP-Optimize Cache work with Nginx?

Yes, the cache feature works with Nginx. Should you want to enable browser caching or GZIP compression, you will have to do this yourself directly on the server settings.

Does caching work with Windows Server (IIS) ?

Yes, the cache feature works with IIS. As with Nginx, if you need to enable browser caching or GZIP compression, you will have to do this yourself on the server.

Does the WP-Optimize page cache work with non-pretty (query parameter-based) permalinks?

No. It’s necessary to have pretty permalinks of the type http://xxxxx.com/my-post/ rather than http://xxxxx.com/?p=1234 for cache to work. Pretty permalinks are the WordPress default setting, and there is no good reason to turn them off, so you should not have a problem with this.
Note that cache will work with permalinks including /index.php/. It is only those based upon query parameters (?…) where cache won’t work.

When does WP-Optimize clear the page cache?

When you publish new content or update/edit existing content, the cache for that post/page will be cleared.
Changing/updating current themes and parent themes (of child themes) will purge the cache.
When turning off the cache feature in WP-Optimize

Will pages in the WP admin dashboard be cached?

No, WP dashboard pages are not cached. The cache functionality is only meant to cache frontend pages.

What is cache lifespan?

The cache lifespan is the time a cached file will be kept before being regenerated.
One of the main reason for setting a lifespan to your cache is that some plugins and themes use nonces, which are printed in the source code of the page (Read more about nonces here). These nonces cannot be reused and are valid for 12 hours by default (developers can change that value). The cache plugin will store the nonce in the page, and this one will become invalid after that perdiod of time, which can affect certain functionalities of your plugins and themes. Setting a cache lifespan to under 10 hours ensures the cache is flushed automatically before the nonce expires. This way you can use WP-Optimize’s cache feature on sites which use nonces.
An other reason is that you may want your pages to reflect some changes without having to clear the whole cache. Indeed if you have many pages and posts, you might not want to clear every cache file with every change, but rather set an interval at which they will expire and be regenerated.

What value should the cache lifespan be?

A lower cache lifespan value will result in more frequent cache update activity on your server, and thus more preload processes, if activated.
If your site does not use nonces, and your site’s cache doesn’t need to be updated often, you can set the cache lifespan to a high value or to 0 to give it an infinite lifespan.
The cache lifespan option is set to 10 hours by default, but you may go down to 8 or even less.
If you notice any issues due to high server load, set a higher interval for the preloader.

Can WP-Optimize Cache minify JavaScript, CSS and HTML?

Yes, the newly added Minify enables you to minify JavaScript and CSS. It also enables you to minify HTML.

What is “Minify”?

Why minify my WordPress site?

WP-Optimize Cache’s Minify feature is all about increasing the speed of your WordPress site for your users.
One way Minify does this is by reducing the size of your HTML, CSS and JavaScript files by removing unnecessary spaces and lines from the files and shortening long names internally within the code.
Another way is that your files are merged into as few files as possible. This reduces the amount of load on your web server and can be quicker to load fewer files.
You can also defer the loading of any CSS or JavaScript file. This means any large or extraneous CSS or JavaScript file can be loaded independently from the core of your WordPress site; giving your users quicker access to your site.

What does “Reset the minified files” actually do?

Pressing the “Reset the minified files” does:
* delete the temporary files used when generating the minified assets
* delete old minified files (more than 30 days old)
* add a folder for the new minified files, which will be generated when visiting a page
The previously minified CSS files will remain on the server until they expire, or until they’re deleted using the button “Delete all the files generated by minify”.

Can I defer CSS and JavaScript using WP-Optimize Cache?

Yes, the newly added minification feature (a.k.a. Minify) allows you to defer parsing of JavaScript and CSS.

Google’s PageSpeed Insights says to leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading. Can WP-Optimize Cache do that?

Leveraging the font-display CSS feature is currently possible when using Google Fonts. The default parameter is “swap”, but can be changed using the WordPress filter “wpo_minify_gfont_display_type”.

When enabling minify, my site’s layout is broken. How can I fix it?

This usually means one or more of your CSS files are incompatible with the minification or merging process. It can also be caused by errors in the CSS’s syntax.
You can check the CSS’s syntax by using an online CSS syntax checker such as csslint.net.
If your syntax is not causing the issue, or you cannot change the file with an issue, you can either exclude the problematic CSS files from the minification and merging process.
To exclude individual CSS files from the minification and merging process, you can go to WP-Optimize > Minify > CSS and go to the “Exclude the following CSS files from processing” section.

When enabling minify, some functionality is broken. How can I fix it?

This usually means one or more of your JavaScript files are incompatible with the minification or merging process. It can also be caused by errors in the JavaScript’s syntax.
The first thing to try is to enable the setting “Contain each included file in its own block” in the JavaScript options (WP-Optimize > Minify > Javascript > JavaScript options). This could “catch” an error, and prevent the rest of the code to be broken.
If the first option didn’t work, try disabling merging of JavaScript files.
If none of the above works, disable processing of JavaScript files in the minify settings, and open a support thread with details about your issue. We’ll do our best to help you troubleshoot the issue.

How do I use the image optimisation feature?

Changelog

3.4.2 – 03/Jul/2024

FIX: Removes unnecessary heartbeat calls for retrieving information about images

3.4.1 – 26/Jun/2024

FIX: Issue with bulk editing on the posts and pages edit screen

3.4.0 – 25/Jun/2024

FEATURE: Premium – Smush – Bulk compress / restore from media library
FIX: Deactivate the form for minifying JS/CSS settings when the corresponding option is disabled
REFACTOR: The functionality for the ‘Unused Images’ feature in ACF has been moved to a separate class
TWEAK: Add UpdraftCentral commands for the latest WP-Optimize features
TWEAK: Adjusted the scheduled preload time for improved performance
TWEAK: Auto-update advanced-cache.php settings during site migration
TWEAK: Cache – Human-readable file names for the cache directory
TWEAK: Caching related cron jobs are activated even though cache is disabled
TWEAK: Image compression – Updated message for restoring images action
TWEAK: Implement Heartbeat API for image compression progress updates
TWEAK: Improving vendor autoload
TWEAK: Introduces a hook (wpo_force_webp_serve_using_altered_html) for changing WebP serving method
TWEAK: Minify – Exclude .min files from minification
TWEAK: Minify – Improve list of processed files UI
TWEAK: Optimization of the get_uncompressed_image query
TWEAK: Persist script loading strategy when minifying JS files
TWEAK: Premium – Compatibility with Curcy WooCommerce multi currency plugin
TWEAK: Premium – Unused Images – Added an option to delete original images when scaled versions exist

3.3.2 – 16/Apr/2024

FIX: Ensure the admin bar is not cached when caching is enabled for both logged-in and guest users
REFACTOR: Remove unused code
TWEAK: Cache – Prevent sitemaps being cached
TWEAK: Display a notice when static browser cache is enabled but not working
TWEAK: Premium – Added “Lost your password?” link on plugin’s page
TWEAK: Premium – Unused images – Detect Elementor’s ‘Video’ widget’s image
TWEAK: Recognise Rank Math plugin tables as used in database optimization
TWEAK: Reduce .htaccess file write operations when WebP is enabled
TWEAK: Seasonal notice content update for 2024
TWEAK: Unused Images – Unused tab displays multiple images for compressed images with WebP Conversion
TWEAK: Prevent multiple AJAX requests being generated by repeated clicks on the “Purge Cache” button
TWEAK: Call the litespeed_finish_request() function when attempting to close browser connection on LiteSpeed servers

3.3.1 – 06/Mar/2024

FIX: Cache – Compatibility issue with Jetpack’s infinity scroll feature
FIX: Cache – Don’t cache activity stream (ActivityPub plugin compatibility)
FIX: Cache – Page not cached comment is added to robots.txt
TWEAK: Fix PHP warnings when server variables are not available
TWEAK: Fix Unexpected response alert and PHP warning when cache preloading is triggered manually
TWEAK: Migrate from setInterval to WP heartbeat API to refresh information about backend tasks
TWEAK: Optimization of the WebP Implementation
TWEAK: Update dashboard notice to include all of our plugins
TWEAK: Update the footer review prompt

3.3.0 – 31/Jan/2024

FEATURE: Premium – Ability to preload and purge caches from individual post/page
FIX: Premium – Unused Images – Recognise Elementor’s Container, and Section widget background images
FIX: Avoid having repeated minified scripts in the same bundle, it breaks the code in some specific cases
FIX: Cache – TranslatePress compatibility – Post updates purges cache for all related translated languages
FIX: Only try to parse canonical URLs if there is a path or querystring, needed for WPML with multi-domain compatibility
TWEAK: Add cron de-scheduling of all wpo_* events during plugin uninstall
TWEAK: Cache – Always add source code comment about page not being cached, but only add details when WP_DEBUG is ON
TWEAK: Cache – Fix issue with excluding encoded (non-latin) URLs
TWEAK: Do not attempt to close browser connection when the context is not an AJAX action
TWEAK: Minify – Logging more information about why minify static assets cache gets invalidated and regenerated
TWEAK: Revert to the original matthiasmullie/minify repository after confirming resolution of previous issues
TWEAK: Setup Cron job to clear failed smush tasks from DB
TWEAK: Using clear text user agent strings instead of regular expressions to identify web browsers for improved clarity
TWEAK: Updater library in the Premium version updated to the current release series

3.2.22 – 23/Nov/2023

TWEAK: Cache – Show a notice in the admin if the config file is missing and caching is enabled
TWEAK: Added support for new emoji styles related hooks introduced in WordPress 6.4
TWEAK: Database – Fix “Optimize database tables” stuck loading state
TWEAK: Premium – Cache – Style improvement for the select2 box from advanced cache settings
TWEAK: Premium – Images – Fix issues with avif images in the unused images feature
REFACTOR: Wrapping most of the external links in the WPO settings pages with the appropriate function
REFACTOR: Remove unused code

3.2.21 – 18/Oct/2023

FIX: Prevent PHP fatal error when updating from older versions of WP-Optimize

3.2.20 – 16/Oct/2023

FIX: WebP – Performance issue because of possible infinite loop
FIX: Cache purging occurred prior to the cache lifespan expiration
FIX: Premium – Smush – Do not consider images in trashed posts as unused
TWEAK – Remove extra slash from plugin asset urls and paths
TWEAK: Image – Add a tooltip next to the restore button on the edit media screen
TWEAK: Premium – Prevent PHP deprecated warning when generating variations from attributes for new WooCommerce variable products
TWEAK: Premium – Purge cache when the Variation Swatches for WooCommerce plugin settings get updated
TWEAK: Premium – Settings – Style improvement for the Purge cache permissions select2 box
TWEAK: Recognise LearnDash plugin tables in database optimization
TWEAK: Remove empty uploads/.htaccess file and remaining cron events
TWEAK: Smush – Disable server info in smush logs by default
TWEAK: Smush – Resolve double log entries when compressing a single image from the media library metabox
TWEAK: Prevent unwanted PHP notice upon update

3.2.19 – 15/Sep/2023

FIX: Cache – Relevant caches are now purged upon updating homepage display settings and posts per page settings
FIX: Minify – Multiline content inside textareas break after exporting and importing settings
FIX: Smush – Images are not compressed with default (image quality = 100) settings
FIX: Premium – Cache – Caching stops working when WordPress salt keys contain backslash () character
FIX: Premium – User per role cache not working when tables do not have wp prefix
FIX: Premium – When lazy loading is enabled, the picture tag in initial viewport is not visible
TWEAK: Fixed date format and timezone in the cache last modification comment according to the site configuration
TWEAK: Fixed spelling errors in the repository
TWEAK: Minify – The process of purging cache for 3rd party caching solutions now works properly when multiple other solutions are present
TWEAK: Premium – Lazy load – Added Jetpack, Optimole, Rocket Lazy Load, and Smush (WPMU Dev) plugins to the incompatibility notice
TWEAK: Prevent PHP warning upon installing themes from the WordPress repository
TWEAK: Update the composer package yahnis-elsts/plugin-update-checker for PHP 8.2 compatibility

3.2.18 – 11/Aug/2023

FIX: A bug in the v3.2.17 release that caused certain database optimization buttons to be disabled has been fixed
TWEAK: Reset WebP serving method upon updating to version 3.2.18

3.2.17 – 08/Aug/2023

FIX: Automatically compress newly-added images feature now works on multisite in case of attachment ID is the same in both sites
FIX: Minify – No separate try-catch blocks for same handle
FIX: Premium – Unused Images – Recognise Elementor Carousel, Slides, Flip Box, and Site logo widget images
FIX: Premium – Prevent memory exhausted PHP fatal error when using unused images feature with Elementor
TWEAK: External links will open in new tab/window
TWEAK: Remove htaccess-capability-tester dependency
TWEAK: Remove residue folders in uploads/wpo

3.2.16 – 06/Jul/2023

FIX: HTML minify should not remove title tag added by AIOSEO
FIX: Premium – Fetching unused images data is incorrect when previous task queue is not properly unlocked
FIX: Premium – Unused Images – Recognise Elementor background images
TWEAK: Premium – Prevent conflicts between the minify feature and the YITH Point of Sale for WooCommerce plugin
TWEAK: Premium – Compatibility issue with Smart Slider 3
TWEAK: Suppress PHP warnings caused by WebP converter
TWEAK: Database optimization – Prevent duplicate AJAX requests, minor code improvements
TWEAK: Smush – Add a cron job to run pending image compressions, ensuring completion of the process even if bulk image compression encounters interruptions or failures
TWEAK: Clean up files on uninstall
TWEAK: Added compatibility for Custom Permalinks plugin
TWEAK: If minifying is enabled, then check that the purge cron event exists (not only upon plugin activation)
REFACTOR: Premium – Unused Images – Separate classes for Beaver Builder, Estatik, and Yoast SEO plugins
FIX: Premium – WP CLI commands permission issues solved

3.2.15 – 09/May/2023

FEATURE: Premium – Cache – Added compatibility with the “WooCommerce Multilingual & Multicurrency” plugin’s multi-currency feature
FIX: Premium – Above the folder elements should not be loaded lazily
FIX: Prevents minify cache invalidation when asset version is changed but content is same
FIX: Prevent PHP 8 uncaught exception TypeError when using CloudFlare
FIX: Add logging destination UI
FIX: Premium – Cache – Prevents a PHP fatal error that occurs when user cache is enabled on sites running on MariaDB with a version prefix of ‘5.5.5-‘ and PHP versions prior to 8.0
FIX: Serving WebP images only to supported browsers wasn’t working properly when page caching is enabled
FIX: Minify – inherit Google fonts method is not working
TWEAK: Prevent PHP deprecation notice when purging minify cache
TWEAK: Cache – Prevent PHP warning when deleting cache
TWEAK: Suppress PHP notice when cannot write to .htaccess file
TWEAK: Add user capability check for smush task manager ajax handling method
TWEAK: Minify – Do not send cache control and last modified headers if already present
TWEAK: Smush – clean up log entries
TWEAK: Correctly handle XX and T1 country codes in Cloudflare’s IP country header
REFACTOR: Separate classes for activation, deactivation and uninstall actions

3.2.14 – 30/Mar/2023

FIX: Compatibility with WordPress 6.2 when using PHP 8.x
FIX: Divi builder’s edit mode when WebP serving is using the “alter HTML” method
FIX: Premium – Unused images feature – improve compatibility with Beaver Builder and its addons
FIX: Cache – Page caching wasn’t working on the IIS webserver
TWEAK: Update seasonal notices
TWEAK: Prevent deprecation notices in PHP 8.2+

3.2.13 – 13/Mar/2023

FEATURE: WebP – Ability to convert to webp format from media library
FIX: Prevent PHP warning when minify-log files are missing or corrupted, also added appropriate error message
FIX: Delete webp files and uncompressed file when media is deleted
FIX: Polylang compatibility – now upon updating any post, caches for all translated languages are cleared
FIX: Prevent adding unsupported media types to the smush task list
FIX: WebP – Unsupported formats throws a fatal error
FIX: Compress image UI for webp images
FIX: Premium – WebP Images are marked as unused images
FIX: Resolved an issue where Beaver Builder’s edit mode was not functioning properly when WebP conversion was enabled
FIX: Prevent creating multiple cache directories for URLs that contain non-English characters
TWEAK: Preload allowed time difference is set to be the same as max execution time
TWEAK: Premium – Unused images feature – Add compatibility with Yoast SEO social images
TWEAK: Prevent jQuery deprecation notices
SECURITY: Fixed a non-persistent XSS vulnerability that could occur on certain servers when the WebP conversion option was enabled. This vulnerability could allow an attacker to execute arbitrary JavaScript code in the victim’s browser by tricking them into clicking on a specially crafted link. Thanks to Paolo Elia for reporting this.

3.2.12 – 06/Feb/2023

SECURITY: Today’s 3.2.11 release (free version only – there was no 3.2.11 Premium release) checked nonces incorrectly, opening up the possibility of an attacker tricking an admin into clicking links crafted to perform unauthorised actions on the WP Optimize configuration on his site.

3.2.11 – 06/Feb/2023

FIX: Empty query string updates cache
FIX: Cache – Purge cache after string translation update in WPML
FIX: Cache – Preload stuck and fails to complete
FIX: Prevent PHP warning when .htaccess files don’t have write permission
FIX: Premium – Fixed compatibility issue with WP Hide plugin
FIX: Minify – Less than 20KB stylesheets loading order
TWEAK: Add cron event only if clear backup images is enabled
TWEAK: Cache – Use WordPress GMT offset for cache comment
TWEAK: Only allow image types that can be compressed
TWEAK: Cached page is not served for sites that have own directory for WordPress files

3.2.10 – 28/Nov/2022

FIX: Prevent php warning and increase SendInBlue mailin plugin compatibility
FIX: Avoid screen juggling while selecting optimizations from dropdown in scheduled clean up
FIX: Prevent cache purge upon deactivation using filter
FIX: Cache purge ability of all registered user
FIX: Recognise WooCommerce product category images as used images
FIX: Multisite support in cached-file-log.php template
TWEAK: Improve Optimization Schedule UI
TWEAK: Consolidated error notices by the use of a global WPO notice object.
TWEAK: Remove Reset WebP serving method button when there are no webp conversion tools
TWEAK: Remove query strings from scripts
TWEAK: Add Restrict Content Pro plugin slug to plugin.json
TWEAK: Add option to remove orphaned user meta data upon run optimization
TWEAK: Add no-cache headers when minify is enabled and page caching is not
TWEAK: Ability to remove .htaccess rules when gzip compression is not available
TWEAK: WebP: Avoid PHP warnings when using hot linked images (Alter HTML method)
TWEAK: WebP conversion is unavailable when php shell functions do not exist
TWEAK: Improved UI settings for asynchronous loading and page speed testing exclusion tools
TWEAK: Add a constant to enable/disable webp feature
TWEAK: Set a global context for $wp_file_descriptions context so that it gets assigned to correctly, preventing a subtle visual change in the theme editor
TWEAK: Prevent php warning from webp-convert library
TWEAK: Update currently-active installs number in thank you for installing notice.
TWEAK: Replaced deprecated use of jQuery.change()

3.2.9 – 06/Sep/2022

FEATURE: Import and export settings
FIX: Avoid infinite loop while using unused images export csv
FIX: Scheduled cache preloading issue
FIX: WebP testing making unnecessary background HTTP checks
FIX: Google fonts compatibility with The7 theme
FIX: Prevent console error for undefined wp_optimize for smush scripts
TWEAK: Avoid PHP warnings on cache cleanup
FIX: Ability to disable webp serving while caching is on
TWEAK: Reset webp conversion method flags daily using cron job
TWEAK: Remove orphaned wpo_weekly_cron_tasks cron job upon uninstallation

3.2.8 – 23/Aug/2022

FIX: Build system error led to a missing file in 3.2.7 which could cause an error when using related functions
FIX: Fix incorrect function name in admin class

3.2.7 – 15/Aug/2022

FEATURE: A CLI command for generating lists of unused images as a CSV file (Premium)
FIX: The unused images CSV downloads have a few redundant images listed
FIX: ACF block field images are listed as unused images
FIX: Correctly recognize inherit in google fonts async loading
FIX: Cache – Do not purge when wp_update_nav_menu is removed from wpo_purge_cache_hooks array
TWEAK: Prevent PHP warnings when using json_decode result
TWEAK: Create cache config file if not present because of site migration
TWEAK: Update notice class
TWEAK: Recognize WooCommerce scheduled sales and cache accordingly
TWEAK: Prevent duplicate wp-optimize entry in tables optimization list
TWEAK: Test htaccess capability only when needed by webp feature
TWEAK: Increase compatibility with Aelia plugins

3.2.6 – 15/Jun/2022

FIX: Incorrect static method calling causes parse Error in PHP 5.6.36
FIX: WebP – Trailing slash file creation issue in PHP 8
FIX: PHP warning in cache rules file
FIX: Asynchronous google fonts loaded twice
TWEAK: Conditional Tags anchor tag fix

3.2.5 – 03/Jun/2022

FIX: Fix a fatal error that could occur in 3.2.4 if settings had not been saved

3.2.4 – 24/May/2022

FEATURE: Create a cron job to delete expired cache files
FEATURE: WebP image format can be used to serve images
FIX: Incorrect record count after importing
FIX: Image smushing issues
FIX: Problem with Redirect – Trailing Slash on URLs
FIX: Unused images issue with ACF repeater and nested fields
TWEAK: Added functionality for exclude caching based on conditional tags
TWEAK: Update last optimized time for scheduled optimizations
TWEAK: Cache – Prevent already header sent warnings while importing posts
TWEAK: Improved UI for actionscheduler_ tables
TWEAK: Add filter to allow/disallow gz file generation
TWEAK: Show error message to user when WP_CACHE constant can’t be removed from wp-config.php due to file permission issue.

3.2.3 – 09/Mar/2022

FEATURE: Minify: Pre-generate assets
FIX: Cache – ‘Purge cache permissions’ setting does not allow additional roles to access the purge cache tool
TWEAK: Make smush details button work in media modal window
TWEAK: Do not show overhead in red when the amount is small
TWEAK: Avoid PHP Notices caused by “upgrader_process_complete” action
TWEAK: Force monolog 2.3.* in order to avoid PHP 7.2+ dependency

3.2.2 – 24/Jan/2022

FEATURE: Cache – Allow debugging of which cache file is chosen
FEATURE: Premium – Cache – Serve cached content for logged in users, per role
FIX: Premium – Unused Images – Fixed trashed images listing
FIX: Image selection issue in compressed and unused image is fixed.
FIX: ACF plugin compatibility issue with select2 JS library
FIX: Premium – Unused Images – Multibyte characters in filename are not recognised correctly
FIX: Table optimization displays wrong information about WP All Import plugin tables
FIX: Potential PHP fatal error – Call to undefined function _wp_get_current_user()
FIX: Minify – correctly minify multiple calc function in single property value
FIX: SQL error when keeping post revisions and optimizing
FIX: Cache – Prevent caching WordPress critical error page
FIX: Minify – Google fonts merging issue when the same font is enqueued in both API V1 and V2
FIX: Minify – Make inherit and inline settings work with Google fonts
FIX: Database error upon plugin activation
TWEAK: Minify – Show a notice if other minification plugins are installed and active
TWEAK: Remove unused bundled JavaScript from minify library to avoid irrelevant scan results
TWEAK: Image compression – Image compression stats include gains on image sizes
TWEAK: Make sure that messages from WP_Error objects in gzip compression are displayed to users.
TWEAK: Prevent PHP notice from WooCommerce deprecation
TWEAK: Create task tables upon activation, if needed.
TWEAK: Show error instead of success when table doesn’t exist
TWEAK: Update seasonal notices
TWEAK: Prevent PHP fatal error in media list view, when images are makred as compressed
TWEAK: Image edit window – Link does not go to image settings and more/less link not working

3.2.1 – 29/Nov/2021

FIX: Apply different image compression levels
FIX: Cache – Purge WooCommerce product page after stock update
FIX: Database errors after adding a new site
FIX: Flatsome theme compatibility with google fonts
FIX: Image compression advanced settings, display default backup days instead of empty value.
FIX: Image compression was not working when the image extension used capital letters
FIX: Premium – Cache – Potential PHP error in User-specific cache
FIX: Premium – resolve potential admin-area PHP error if the deprecated mailchimp sync plugin and MC4WP plugin are both active (and potentially other situations where a plugin deactivates another)
FIX: Premium – Unused images – compatibility with PHP 8
FIX: Premium – Unused images – issue with parenthesis in name
FIX: Premium – Unused images – Pagination count doesn’t update
FIX: Prevent a PHP notice when using with UpdraftCentral
FIX: Save prioritize maximum compression setting correctly
FIX: Wrong redirect when wiping settings on multisite
TWEAK: Premium – add review link at bottom of settings
TWEAK: Force monolog/monolog and psr/log versions to retain PHP 5.X compatibility/satisfy wordpress.org SVN hooks
TWEAK: Add compatibility with Kinsta
TWEAK: Added functionality for to convert MyISAM to InnoDB
TWEAK: Add filters for minify input string
TWEAK: Cache – Added filter to modify cache exception urls
TWEAK: Cache – Optimize preload from sitemap
TWEAK: Cache – Serve different versions based on cookie consent
TWEAK: changed filter to prevent deprecation notice in php 8.1+
TWEAK: Decide automatically whether to inline css or not based on file size
TWEAK: Fix typo in text domain name
TWEAK: get_hurl function minified.
TWEAK: Improve clarity of debug message when DONOTCACHEPAGE constant is used
TWEAK: Improve DB UI/UX on multisite
TWEAK: Improve minify cache size messages
TWEAK: Making Estatik plugin compatible
TWEAK: Minify – Add JS translations support
TWEAK: Minify HTML only on cache pre-loading
TWEAK: Port from previous semaphore classes to Updraft_Semaphore_3_0
TWEAK: Premium – Unused images – Show that there are images in the trash without having to re-scan everything
TWEAK: Prevent a PHP notice when downloading image compression log file. Fix backup modal styling issue.
TWEAK: Prevent fatal error in gzip settings when stylesheet could not be fetched
TWEAK: Short-circuit trivial case of nothing in the buffer when page-caching, to involve any possible other issues
TWEAK: Update comments count after trackbacks and pingbacks deletion
TWEAK: Update minified asset when the enqueued scripts and styles version change
TWEAK: Use proper constant of includes path in user cache extension
TWEAK: Fix path to wpo-plugins-tables-list.json in robots.txt

3.1.12 – 12/Jul/2021

FEATURE: Ability to defer js files and asynchronously load css files
FEATURE: Option to not aggregate inline styles and scripts
FIX: Always purge this cache HTML issue
FIX: Cache – Enable cache for subfolders and multisite installation with the permalink structure example.com/index.php/a-post-name
FIX: PHP 8 Issue: Minify and Merge Error
FIX: Silent failure of page caching if plugin location not found
TWEAK: Added Update URI header field to avoid accidentally being overwritten with an update of a plugin of a similar name from the WordPress.org Plugin Directory.
TWEAK: Delay displaying notices for 2 weeks
TWEAK: Improve label of when saving a media type in always purge this
TWEAK: Improve query for EWWW IO history
TWEAK: Prevent a PHP notice if using WP-Optimize and MetaSlider on the same site.
TWEAK: Prevent PHP warnings from theme update and google font minify
TWEAK: Skip HTML minification if the total size is > 1MB (takes too long to be worthwhile)
TWEAK: Updating custom compression slider values

3.1.11 – 08/Jun/2021

FIX: Cache – Don’t cache pages for logged-in users when ‘Serve cached pages to logged in users’ option (new in 3.1.10) is enabled

3.1.10 – 26/May/2021

FEATURE: Premium – Cache – User-specific cache. Useful for subscription websites, and websites where tailored content is offered to logged-in users.
FEATURE: Page cache now also caches RSS feeds
FEATURE: Ability to exclude files from minify process
TWEAK: Prevent PHP warning when deactivating Minify and the cache folder does not exist anymore
TWEAK: Premium – Lazy-load – Possibility to disable Lazy load on specific pages
TWEAK: Do not enqueue deleted script
FIX: Minify – Some pattern CSS import statements broke site
FIX: Minify – Events triggering
FIX: Google Fonts regression in 3.1.9

3.1.9 – 29/Apr/2021

FEATURE: Power Tweak – Change meta_key field length and create new index
FEATURE: Premium – Automatic Backups using UpdraftPlus during scheduled optimizations
FEATURE: Keep last X revisions
FIX: Overlapping header notice in mobile view
FIX: Cache – Wildcard not working in cache exclusions
FIX: Prevent error in htaccess when mod_header isn’t available
FIX: PHP Fatal error on deleting plugin
FIX: PHP 8 Issue: loadAsync JS error
FIX: RankMath breaks robots.txt
TWEAK: Bypass minify when editing translations using TranslatePress
TWEAK: Purge minify cache from front end
TWEAK: Minify – Prevent cache directory creation while disabled
TWEAK: Add Google Fonts API version 2 support
TWEAK: Minify – Save all tab content settings changes with single Click
TWEAK: Improved optimization preview
TWEAK: Filter the list of preloaded URLs
FEATURE: Premium – Cache – Always purge this page
TWEAK: Update seasonal notices
TWEAK: Bump WP version requirement to 4.5+

3.1.8 – 12/Mar/2021

FIX: Cache – Warning failed to open dir
FIX: Premium – Unused images – Fixed issue with images including a size suffix similar to WP sizes
FIX: Display optimization data based on retention period
FIX: Scheduled cleanup settings – Invalid date selection
TWEAK: Premium – Separate table optimisations per sub-site
TWEAK: Premium – Unused images – Add compatibility with the Envira Gallery plugin
TWEAK: Page caching: add support for Avada
TWEAK: Add visual clue when image compression was cancelled
TWEAK: Image compression – multi image selection using Ctrl/Shift keys
TWEAK: Premium – Unused images – Reset last clicked image reference when select none is clicked
FIX: Premium – Unused images – Pagination not working in the trash
TWEAK: Prevent bots from indexing plugins list json file
TWEAK: Minify – Added a setting to change the time stale cache should be kept
TWEAK: Better support for Beaver Builder
TWEAK: Prevent PHP warning when reading a file’s size
TWEAK: Cache – Purge the blog page when updating a post
TWEAK: Cache – Purge next and previous posts on post update
TWEAK: Cache – Purge sitemap files on post update

3.1.7 – 12/Feb/2021

FEATURE: Premium – Preload key requests (Preload fonts and other assets)
FIX: Detecting Brotli compression issue
FIX: Cache – PHP Warning in URLs to exclude from caching
FIX: Premium – Unused images – Unused Images Tool not recognising Greek characters
FIX: Button for disabling Gzip doesn’t showing
TWEAK: Database optimization – Prevent fatal error due to files missing
TWEAK: Skip minify when SCRIPT_DEBUG is set to true
TWEAK: Fixed Font-awesome settings
TWEAK: Add support for different spellings of “Font-awesome”
TWEAK: Update the feature comparison table
TWEAK: Added the option to not show the warning before deleting a table
TWEAK: Wipe all options upon plugin de-installation
TWEAK: Premium – Lazy-load – Lazy load support for background images
TWEAK: Minify – Add file size in the minify cache summary
TWEAK: Detect conflicting plugins for GZIP issue
TWEAK: Database optimization – Include all tables if database prefix is not set on WP install
TWEAK: Premium – Unused images – added “X of X images loaded” for unused trash images
TWEAK: Don’t allow to remove actionscheduler_* tables
TWEAK: Premium – Unused images – Show a progression screen when doing any action with unused images
TWEAK: Cache – Enable cache for the old default permalink structure domain.com/index.php/a-post-name by creating a folder without the extension
TWEAK: Show previous action as message on Trackbacks or Comments enable or disable.
TWEAK: Prevent deprecation notice on PHP 8.0
TWEAK: Update notices

3.1.6 – 17/Dec/2020

FIX: Fix wrong class name

3.1.5 – 17/Dec/2020

FEATURE: Introduction of Power tweaks (premium feature)
FEATURE: Power tweak – replace WooCommerce “Get total spent” query by a faster one
FIX: CloudFlare not detected on gzip and browser caching tabs
FIX: Cloudflare caching issue
FIX: Premium – Unused images – Download CSV warning
FIX: PHP 8 compatibility issue WP_Optimize_Browser_Cache->prepare_interval()
TWEAK: Upgrade jQuery code to deal with deprecations with the latest bundled version
TWEAK: Fix wrong usage of wp_localize_script to prevent warnings in PHP 8
TWEAK: Premium – Unused images – Update the data when moving images to the trash / deleting instead of doing a hard refresh
TWEAK: Change how default exclusions are handled
TWEAK: Now that PHP 8.0 has been released, bump minimum PHP version requirement from PHP 5.4 to 5.6.
TWEAK: Delete WP-O’s .htaccess rules at deactivation
TWEAK: Premium – Unused images – Separate unused images and unused image sizes processes
TWEAK: Update jQuery document ready style to the one not deprecated in jQuery 3.0
TWEAK: Minify CSS – Possibility to toggle the google fonts display=swap parameter from the UI.
TWEAK: Fix small UI issues
TWEAK: Clean up all cron events when deactivating the plugin
TWEAK: Premium – Possibility to set permissions for purging page cache and minify files.
TWEAK: Bypass minify when editing a post using the Brizy editor
TWEAK: Renamed UpdraftCentral’s command classes filter
TWEAK: Bump WP version requirement to 4.4+, and PHP version requirement …