Compress images & optimize images with built-in lossless compression, lazy load, WebP conversion, and resize detection to make your site load amaz …
Smush is the leading image optimization plugin – optimize, resize, and compress images, as well as convert images to WebP format for faster loading web pages.
Brought to you by the WPMU DEV team – founded in 2007 and trusted by web professionals from freelancer to agency worldwide ever since.
Whether you spell it ‘optimise’ or ‘optimize’ – with Smush’s image optimizer you can compress images and serve images in next-gen formats (convert to WebP), all without introducing a visible drop in quality.
Enjoy unlimited bulk image optimization with Smush Pro.
Level up immediately with exclusive Pro benefits like unlimited image optimization, 5x more image compression, and 123-point global image CDN. Learn more about Pro.
Smush has been benchmarked and tested number one for speed and quality. Beyond that, it’s also the award-winning, back-to-back proven crowd-favorite WordPress image optimizer trusted by over 1M+ worldwide to:
Smush was built from the ground up to make it easy for WordPress users to optimize images, activate lazy loading, compress media files, and more – whether they’re just getting started, or a seasoned pro who’s developed thousands of websites.
Improve website performance (along with Google PageSpeed Insights scores) with compressed and optimized images and lazy loading – all while actually delivering a better user experience because the rollout of Core Web Vitals has proven one thing: performance is about far more than just scoring well on performance testing tools. Visitor experience matters.
Discover the features that set Smush apart from other image optimization plugins:
With Smush, you can take advantage of next-gen image formats by converting all of your images to WebP. WebP is a file format that enables superior image compression and quality retention. All major performance testing solutions, including Google PageSpeed Insights, assess your site’s ability to serve images in these next-gen formats due to the significant impact on visitor experience.
WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller than comparable JPG images. More information can be found in this Google developers article.
The best part: Smush’s Local WebP feature makes this incredibly easy to set up with the ability to host all images locally (not requiring the use of a CDN). Our Local WebP feature includes automatically replacing PNG and JPEG images on your website’s frontend to serve WebP images – with the necessary fallbacks for browsers that don’t support WebP yet.
Learn more: How To Convert Images to WebP In WordPress
Note: Yes, Smush supports WebP conversion for all image formats, including JPEG to WebP and PNG to WebP.
With the best image optimization plugin for WordPress – you can finally stop worrying about the performance impact of using the images you want on your website.
Image compression plugins don’t have to destroy images with a visible, 30% loss in quality. Smush strips hidden information from your images (that can often be bulky), and reduces image file sizes without introducing a visible impact on appearance.
Smush meticulously scans every image you upload – or have already added to your site – cuts all the unnecessary data, and scales it for you before adding it to your media library. And it can serve images in the WebP format.
Have a large number of images to compress? Smush’s powerful optimization features will continue to work their magic in the background, even when you’ve closed the plugin completely. You’ll receive an email when image optimization has been completed – with a full report.
As well as smushing your media uploads, you may want to compress the images stored in other folders. Smush now lets you compress any image in any directory – so that you can optimize all the images on your site – including NextGEN images, images stored on Amazon S3 using WP Offload Media and images in EVERY WordPress plugin and theme package!
No matter what theme or plugins you use to manage your WordPress media library, Smush has you covered. Check out just a few of the popular products Smush is working with to help make your site faster and more efficient:
Smush includes a wrong-size image finder. Activate this feature, and your images will be highlighted with smart tips to let you easily resize your images. Quickly locate the images that are keeping you from getting that perfect 100 on your Google PageSpeed test.
Smush includes built-in lazy loading. If your page has a bunch of images below the fold, lazy loading will drastically speed up your page by serving only the images being viewed, and delaying others further down the page.
Configs allow you to save your preferred Smush configuration settings and apply them to your other sites in a few clicks. You can create unlimited configs.
★★★★★
“I had no idea that my page load time was being dragged down by the images. The plugin nearly halved the time it took.” – karlcw
★★★★★
“I optimise my photos in Photoshop, but Smush makes it so easy – it does it automatically. I can just sit back and enjoy the speed.” – helen432
★★★★★
“Smush helped reduce the total files size on my site and increased browsing speed. Well done guys!” – pdci
★★★★★
“It’s very discrete and does not bother me with an API key or other additional installation steps. The main dashboard of the plugin gives me nice insight. Overall it really fits my needs and I’ll be willing to upgrade to pro if my needs change. I’d recommend it to clients/friends without hesitation. Keep it up!” – tarkan_
Smush can be used to optimize all images across your entire network! Use global settings, or configure each site individually.
Smush is super easy to use – no confusing image compression software settings. Smush lets you optimize all images in your library either one at a time, or all together. Plus, configure auto-smush to asynchronously scale and compress some or all of your images as they are being uploaded – it’s incredibly fast.
The faster your site loads, the more Google, Bing, Yahoo, and other search engines will like it. Your site will load faster and rank higher.
Smush can take care of all your image compression needs… all for free!
However, if you’d like fast CDN image delivery, WebP conversion, automatic image resizing, the ability to optimize (or optimise) images up to 256MB, bulk smush optimization for all your images in just one-click, auto-convert PNG to JPEG, the ability to make a copy of your full-sized images (to restore them at any point), you can always take the next step with WP Smush Pro. And get even more with her whole team of WordPress optimization hero friends (security, SEO, performance, support, and maintenance automation) – trusted by thousands of agencies and freelancers offering site maintenance services.
Smush does not interact with end users on your website. The only input option Smush has is to a newsletter subscription for site admins only.
Smush uses a third-party email service (Mailchimp) to send informational emails (opt-in) to the site administrator. The administrator’s email address is sent to Mailchimp and a cookie is set by the service. Only administrator information is collected by Mailchimp.
Smush sends images to the WPMU DEV servers to optimize them for web use. This includes the transfer of EXIF data. The EXIF data will either be stripped or returned as it is. It is not stored on the WPMU DEV servers.
WPMU DEV is a premium supplier of quality WordPress plugins, services and support. Learn more here:
https://wpmudev.com/
Don’t forget to stay up to date on everything WordPress from the Internet’s number one resource:
WPMU DEV Blog
Hey, one more thing… we hope you enjoy our free offerings as much as we’ve loved making them for you!
Originally written by Alex Dunae at Dialect (dialect.ca, e-mail ‘alex’ at ‘dialect dot ca’), 2008-11.
This means your images were not properly scaled for where they are being displayed. Scaling images before uploading them can be time-consuming, but can save space and speed up load time. First, determine what size your image needs to be. You can use the built-in images size detector included in the free version of Smush to find what height and width your image should be. Once you know how large the image should be, scale your images to the right size.
Lazy Load will defer your offscreen images from loading until they are needed. From the Smush Dashboard, select Lazy Load and click Activate. Smush Lazy Load works out of the box or can be customized based on your needs.
Tip: If you’re having any issues or want to save a ton of time, the Smush Pro CDN includes auto-resizing of images.
Nope. WordPress crops and resizes every image you upload for embedding on your site. By default, Smush only compresses these cropped and resized images, not your original full-size images. To compress your original full-sized images, use Smush Pro.
GIF files are large and can’t be optimized much. They should only be used if the image is animated.
PNG is best for computer generated graphics (vectors, logos, fonts, etc.), images with few colors, or images with transparency.
JPG should be used for photography or images with a lot of color variation.
Tip: The Smush Pro CDN includes WebP compression – sharper images that are 25 to 30 percent smaller than JPEG and PNG files.
Yes! EXIF data stores camera settings, focal length, date, time, and location information in image files. EXIF data makes image files larger, but if you are a photographer you may want to preserve this information. We have included the option to preserve EXIF image data with Smush.
First, check to see if you’re receiving any server errors. If your images seem to be processing correctly, check the file size of the images being skipped. Images over 5mb will not be processed by the free version of Smush. To compress images up to 256mb, get Smush Pro.
Great question! It is important to understand Smush is an image optimization tool that uses lossless image compression to save disk storage space and speed up your site. Smush squeezes data out from your image files that will save space, resize huge images, and improve speed – all without changing quality.
You can track file size changes in your media library, individual image savings, directory savings, and Smush total savings with Smush stats. If you want to see some additional magic, run before-and-after page-speed tests with Google PageSpeed Insights. Every little bit of resource savings is important when it comes to page-speed!
Optimizing all the image sizes generated by WordPress, images being imported from plugins and themes, and images from other web sites is a painful and time-consuming process.
Smush automatically handles optimizing all your images no matter where they come from, and can be used either as a standalone tool or alongside Photoshop.
WebP and other Next-Gen formats are not supported on all browsers and require fallback images. For that reason, WebP conversion is only available in Smush Pro. Smush Pro converts images to WebP for a 25-30% savings over JPEG and PNG, and serves fallback images on unsupported browsers.
It depends what side of the pond you live on… but whether you say optimize, optimise, optimizer, or Smush goddess of speed, this plugin will make sure your images are loading lightning fast.
We take plugin security incredibly seriously; if you have a bug or vulnerability to report, you can do so through the Patchstack Vulnerability Disclosure Program. It’s fast, easy, and you will be notified when the issue is fixed. Report a vulnerability.
smush_background_images_regex
and smush_images_from_content_regex
filters to adjust regex rules for finding images on the pagesmush_cdn_before_process_background_src
filter to adjust background image srcsmush_skip_adding_srcset
filter to allow disabling auto-resize for selected imageswp_smush_webp_dir
filter to customize WebP directory