LiteSpeed Cache Plugin

LiteSpeed Cache for WordPress (LSCWP) is an all-in-one site acceleration plugin, featuring an exclusive server-level cache and a collection of optimization features.

LSCWP supports WordPress Multisite and is compatible with most popular plugins, including WooCommerce, bbPress, and Yoast SEO.

LiteSpeed Cache for WordPress is compatible with ClassicPress.

Requirements

General Features may be used by anyone with any web server (LiteSpeed, Apache, NGINX, etc.).

LiteSpeed Exclusive Features require one of the following: OpenLiteSpeed, commercial LiteSpeed products, LiteSpeed-powered hosting, or QUIC.cloud CDN. Why?

Plugin Features

General Features

• Free QUIC.cloud CDN Cache
• Object Cache (Memcached/LSMCD/Redis) Support+
• Image Optimization (Lossless/Lossy)
• Minify CSS, JavaScript, and HTML
• Minify inline & external CSS/JS
• Combine CSS/JS
• Automatically generate Critical CSS
• Lazy-load images/iframes
• Responsive Image Placeholders
• Multiple CDN Support+
• Load CSS Asynchronously
• Defer/delay JS loading
• Browser Cache Support+
• Database Cleaner and Optimizer
• PageSpeed score (including Core Web Vitals) optimization
• OPcode Cache Support+
• HTTP/2 Push for CSS/JS (on web servers that support it)
• DNS Prefetch
• Cloudflare API
• Single Site and Multisite (Network) support
• Import/Export settings
• Attractive, easy-to-understand interface
• WebP image format support
• Heartbeat control

+ This service is not provided by the LSCache plugin, nor is it guaranteed to be installed by your service provider. However, the plugin is compatible with the service if it is in use on your site.

LiteSpeed Exclusive Features

• Automatic page caching to greatly improve site performance
• Automatic purge of related pages based on certain events
• Private cache for logged-in users
• Caching of WordPress REST API calls
• Separate caching of desktop and mobile views
• Ability to schedule purge for specified URLs
• WooCommerce and bbPress support
• WordPress CLI commands
• API system for easy cache integration
• Exclude from cache by URI, Category, Tag, Cookie, User Agent
• Smart preload crawler with support for SEO-friendly sitemap
• Multiple crawlers for cache varies
• HTTP/2 support
• HTTP/3 & QUIC support
• ESI (Edge Side Includes) support*
• Widgets and Shortcodes as ESI blocks* (requires Classic Widgets plugin for WP 5.8+)

* Feature not available in OpenLiteSpeed

LSCWP Resources

• Join our Slack community to connect with other LiteSpeed users.
• Ask a question on our support forum.
• View detailed documentation.
• Read WordPress Wednesday tutorials on our blog.
• Help translate LSCWP.
• LSCWP GitHub repo.

Third Party Compatibility

The vast majority of plugins and themes are compatible with LSCache. Our API is available for those that are not. Use the API to customize smart purging, customize cache rules, create cache varies, and make WP nonce cacheable, among other things.

Privacy

This plugin includes some suggested text that you can add to your site’s Privacy Policy via the Guide in the WordPress Privacy settings.

For your own information: LiteSpeed Cache for WordPress potentially stores a duplicate copy of every web page on display on your site. The pages are stored locally on the system where LiteSpeed server software is installed and are not transferred to or accessed by LiteSpeed employees in any way, except as necessary in providing routine technical support if you request it. All cache files are temporary, and may easily be purged before their natural expiration, if necessary, via a Purge All command. It is up to individual site administrators to come up with their own cache expiration rules.

In addition to caching, our WordPress plugin has online features provided by QUIC.cloud for Image Optimization, CSS Optimization and Low Quality Image Placeholder services. When one of those optimizations are requested, data is transmitted to a remote QUIC.cloud server, processed, and then transmitted back for use on your site. Now if using the QUIC.cloud CDN it uses LSCache technologies to access your site then host your site to others globally and also your data is not transferred to or accessed by QUIC.cloud employees in any way, except as necessary in providing maintenance or technical support. QUIC.cloud keeps copies of that data for up to 7 days and then permanently deletes them. Similarly, the WordPress plugin has a Reporting feature whereby a site owner can transmit an environment report to LiteSpeed so that we may better provide technical support. None of these features collects any visitor data. Only server and site data are involved.

Please see the QUIC.cloud Privacy Policy for our complete Privacy/GDPR statement.

View detailed documentation.

For Optimization Without a LiteSpeed Web Server

1. Install the LiteSpeed Cache for WordPress plugin and activate it.
2. From the WordPress Dashboard, navigate to LiteSpeed Cache > Page Optimization. Enable the available optimization features in the various tabs.

For Caching and Optimization With a LiteSpeed Web Server

1. Install LiteSpeed Web Server Enterprise with LSCache Module, LiteSpeed Web ADC, or OpenLiteSpeed with cache module (Free). Or sign up for QUIC.cloud CDN.
2. Install the LiteSpeed Cache for WordPress plugin and activate it.
3. From the WordPress Dashboard, navigate to LiteSpeed Cache > Cache, make sure the option Enable LiteSpeed Cache is set to ON.
4. Enable any desired caching and optimization features in the various tabs.

Notes for LiteSpeed Web Server Enterprise

• Make sure that your license includes the LSCache module. A 2-CPU trial license with LSCache module is available for free for 15 days.
• The server must be configured to have caching enabled. If you are the server admin, click here for instructions. Otherwise, please request that the server admin configure the cache root for the server.

Notes for OpenLiteSpeed

• This integration utilizes OpenLiteSpeed’s cache module.
• If it is a fresh OLS installation, the easiest way to integrate is to use ols1clk. If using an existing WordPress installation, use the --wordpresspath parameter.
• If OLS and WordPress are both already installed, please follow the instructions in How To Set Up LSCache For WordPress.

1. 

   Plugin Benchmarks

2. 

   Admin - Dashboard

3. 

   Admin - Image Optimization

4. 

   Admin - Crawler

5. 

   Admin Settings - Cache

6. 

   Admin Settings - Page Optimization

7. 

   Admin Settings - CDN

8. 

   Admin Settings - DB Optimizer

9. 

   Admin Settings - Toolbox

10. 

    Cache Miss Example

11. 

    Cache Hit Example

6.3 – Jul 22 2024

• 🌱Page Optimize HTML Keep Comments: When minifying HTML do not discard comments that match a specified pattern. (#328853)
• 🌱Cache Cache POST requests. Now can configure POST/GET AJAX requests to be cached. (#647300)
• Cache Bypass admin initialization when doing ajax call. (Tim)
• Cache Better control over the cache location #541 (Gal Baras/Tanvir Israq)
• Cloud Added nonce for callback validation to enhance security. (Chloe@Wordfence)
• Cloud Fixed an error message for daily quota.
• Cloud Display error message when communicating with QUIC.cloud causes a token error.
• ESI Bypass ESI at an earlier stage when getting DONOTCACHEPAGE.
• ESI Added ESI nonce for Events Calendar and jetMenu mobile hamburger menu. (#306983 #163710 PR#419)
• ESI Added WP Data Access nonce (PR#665)
• ESI Added WP User Frontend ESI nonce (PR#675)
• Media Ignored images from JS in image size detection (PR#660)
• GUI Moved Preset menu from network level to site level for multisite networks.
• GUI Suppressed sitemap generation message if not triggered manually.
• GUI Added CloudFlare purge to front end menu.
• GUI Allowed customized partner CDN login link on dash.
• Page Optimize Cleaned up litespeed_url table when clearing url files. (PR#664)
• Page Optimize Updated Instant Click library to version 5.2.0.
• Page Optimize Added Flatsome theme random string excludes. (PR#415)
• Page Optimize Exclude Cloudflare turnstile from JS optimizations. (Tobolo)
• Page Optimize Fixed Cloudflare Turnstile issues. (Contributolo PR#671/672)
• Object Improved debug log for object cache status. (PR#669)
• Object Added brief parseable header comments to the drop-in file. (OllieJones)
• Debug Trimmed debug log.
• Misc Improved compatibility and sped up resolving for JSON functions json_encode/json_decode. (hosni/szepeviktor #693)
• Misc Fixed typos in params and comments. (szepeviktor #688)
• Image Optimization Fixed an issue which suppressed new requests when there were no new images in the library but there were unprocessed images in the send queue.
• Image Optimization Improved Cloud side quota check by disallowing new requests if notified but not pulled.
• Image Optimization Keep image attributes when replacing dimensions. (PR#686 #381779)

6.2.0.1 – Apr 25 2024

• 🔥🐞Page Optimize Fixed the image display issue that occurs with Elementor’s data-settings attribute when the WebP image is not yet ready. (kanten/cbwwebmaster/reedock #132840 #680939 #326525)

6.2 – Apr 23 2024

• 🌱Crawler Added Crawler hit/miss filter. (#328853)
• 🌱CLI Image optimization now supports wp litespeed-image batch_switch orig/optm. (A2Hosting)
• 🌱VPI Auto preload VPI images. (Ankit)
• Object Added support for username/password authentication for Redis (PR#616 Donatas Abraitis/hostinger)
• Page Optimize Now supporting Elementors data-settings WebP replacement. (Thanks to Ryan D)
• Cache Send Cache-Control: no-cache, no-store, must-revalidate, max-age=0 when page is not cacheable. (asafm7/Ruikai)
• Cache Cache control will respect X-Http-Method-Override now. (George)
• Cache No cache for X-Http-Method-Override: HEAD. (George)
• Cache Specified LSCWP in adv-cache compatible file.
• Cache Fixed redirection loop if query string has tailing ampersand (#389629)
• Cache Dropped “Cache Favicon.ico” option as it is redundant with 404 cache. (Lauren)
• Cache Fixed deprecated PHP v8 warning in page redirection. (Issue#617 dcx15)
• Cloud REST callback used ACL for QC ips validation.
• Cloud Fixed a typo in parsing cloud msg which prevented error messages to show.
• Cloud Carried on PHP ver for better version detection purpose.
• Cloud Escaped token to show correctly in report.
• Cloud Fixed a QC cloud ip verification setup failure in PHP 5.3.
• 🐞Cloud Fixed a continual new version detection.
• 🐞Image Optimize Fixed a summary counter mismatch for finished images. (A2Hosting)
• CDN Auto CDN setup compatibility with WP versions less than 5.3.
• 🐞CDN Fixed wrong replacement of non image files in image replacement. (Lucas)
• GUI Further filtered admin banner messages to prevent from existing danger code in database.
• REST Fixed a potential PHP warning in REST check when param is empty. (metikar)

6.1 – Feb 1 2024

• 🌱Database New Clear Orphaned Post Meta optimizer function.
• Image Optimize Fixed possible PHP warning for WP requests library response.
• Image Optimize Unlocked noabort to all async tasks to avoid image optimization timeout. (Peter Wells)
• Image Optimize Fixed an issue where images weren’t being pulled with older versions of WordPress. (PR#608)
• Image Optimize Improved exception handling when node server cert expire.
• 🐞Image Optimize The failed to pull images due to 404 expiry will now be able to send the request again.
• Crawler CLI will now be able to force crawling even if a crawl was recently initiated within the plugin GUI.
• Page Optimize Fixed a dynamic property creation warning in PHP8. (PR#606)
• Page Optimize Fixed an issue where getimagesize could cause page optimization to fail. (PR#607)
• Tag Fixed an array to string conversion warning. (PR#604)
• Object Cache Return false to prevent PHP warning when Redis fails to set a value. (PR#612)
• Cache Tag Fixed an issue where $wp_query is null when getting cache tags. (PR#589)

6.0.0.1 – Dec 15 2023

• 🐞Image Optimize Grouped the taken notification to regional center servers to reduce the load after image pulled.

6.0 – Dec 12 2023

• 🌱Image Optimize Parallel pull. (⭐ Contributed by Peter Wells #581)
• 🌱Cache CLI Crawler.
• 🌱Cache New Vary Cookies option.
• 🌱Media New Preload Featured Image option. (Ankit)
• Core Codebase safety review. (Special thanks to Rafie Muhammad @ Patchstack)
• Purge Purge will not show QC message if no queue is cleared.
• Purge Fixed a potential warning when post type is not as expected. (victorzink)
• Conf Server IP field may now be emptied. (#111647)
• Conf CloudFlare CDN setting vulnerability patch. (Gulshan Kumar #541805)
• Crawler Suppressed sitemap generation msg when running by cron.
• Crawler PHP v8.2 Dynamic property creation warning fix. (oldrup #586)
• VPI VPI can now support non-alphabet filenames.
• VPI Fixed PHP8.2 deprecated warning. (Ryan D)
• ESI Fixed ESI nonce showing only HTML comment issue. (Giorgos K.)
• 🐞Page Optimize Fixed a fatal PHP error caused by the WHM plugin’s Mass Enable for services not in use. (Michael)
• 🐞Network Fix in-memory options for multisites. (Tynan #588)
• Network Correct Disable All Features link for Multisite.
• 🐞Image Optimize Removing original image will also remove optimized images.
• Image Optimize Increased time limit for pull process.
• Image Optimize Last pull time and cron tag now included in optimization summary.
• Image Optimize Fixed Elementors Slideshow unusual background images. (Ryan D)
• 🐞Database Optimize Fix an issue where cleaning post revisions would fail while cleaning postmeta. (Tynan #596)
• Crawler Added status updates to CLI. (Lars)
• 3rd WPML product category purge for WooCommerce. (Tynan #577)

5.7.0.1 – Oct 25 2023

• GUI Improvements to admin banner messaging. (#694622)
• CDN Improvements to CDN Setup. (#694622)
• Image Optimize Improvements to the process of checking image identification. (#694622)

5.7 – Oct 10 2023

• 🌱Page Optimize New option available: Preconnect. (xguiboy/Mukesh Patel)
• 🌱3rd New Vary for Mini Cart option for Woocommerce. (Ruikai)
• Cloud Force syncing the configuration to QUIC.cloud if CDN is reenabled.
• Cloud Force syncing the configuration to QUIC.cloud if domain key is readded.
• Cloud Limit multi-line fields when posting to QC.
• Cache Treat HEAD requests as cacheable as GET. (George Wang)
• 🐞ESI Patched a possible vulnerability issue. (István Márton@Wordfence #841011)
• 🐞ESI Overwrite SCRIPT_URI to prevent ESI sub request resulting in redirections. (Tobolo)
• 🐞Image Optimize Bypass unnecessary image processing when images were only partially optimized. (Ruikai)
• 🐞Guest Guest mode will not enable WebP directly anymore. (Michael Heymann)
• CDN Auto disable CDN if CDN URL is invalid. (Ruikai)
• CDN Fixed a null parameter warning for PHP v8.1 (#584)
• API Added litespeed_media_add_missing_sizes filter to allow bypassing Media’s “add missing sizes” option (for Guest Optimization and otherwise). (PR #564)
• Guest Fixed soft 404 and robots.txt report for guest.vary.php.
• Vary Enabled litespeed_vary_cookies for LSWS Enterprise.
• GUI Stopped WebP tip from wrongly displaying when Guest Mode is off.
• GUI Added QUIC.cloud promotion postbox on dashboard page.
• 3rd Added pagespeed ninja to blocklist due to its bad behavior.