Discover, trust, install: FAIR 1.0 is here
AVIF & WebP Converter
Version: 0.9.32
Description
CompressX is a free, lightweight and simple Webp & AVIF conversion and compression plugin for WordPress websites. It helps you to easily convert JPG and PNG images to WebP and AVIF formats, and compress WebP and AVIF images. The AVIF and WebP conversion is performed locally on the web server.
Core Features
1. Convert AVIF & Compress AVIF
Convert jpg, png, and WebP images on your WordPress website to AVIF format, and compress AVIF images according to the compression level you set.
If the original image is already in AVIF format which is supported since WordPress 6.5, the original AVIF image will only be compressed.
2. Convert WebP & Compress WebP
Convert jpg, png images on your WordPress website to WebP format, and compress WebP images according to the compression level you set.
If the original image is already in WebP format which is supported since WordPress 5.8, the original WebP image will only be compressed.
3. Exclude Folders
Select specific folders in your media library and prevent images inside them from being processed.
4. Custom Folders
Select folders that are in the wp-content folder but outside the Uploads (media library) and process images inside them.
5. Auto-Process New Images
Automatically convert new images uploaded to a WordPress website to WebP/AVIF format and compress WebP/AVIF images upon upload.
6. Auto-Remove Large Images
Automatically remove converted AVIF/WebP images when they are larger than original images.
7. Restore Original Images
Your images will be reverted to their original state and all AVIF/WebP images and data in the database generated by CompressX will be removed when CompressX is uninstalled.
Minimum Requirements to use CompressX
- Character Encoding UTF-8
- PHP version 7.0
- MySQL version 4.1
- WordPress 5.8
Installation
Install CompressX
1.Go to your sites admin dashboard.
2.Navigate to Plugins Menu and search for CompressX.
3.Find CompressX and click Install Now.
4. Click Activate.
Screenshots
Converting PNG/JPG images to WebP
Faq
CompressX converts JPG/PNG images on your WordPress website to WebP and AVIF formats, and compress WebP and AVIF images locally, for free!
Yes, CompressX supports AVIF conversion and compression, the AVIF conversion and compression feature is completely free.
Yes, CompressX supports WebP conversion and compression, the WebP conversion and compression feature is completely free.
Yes, absolutely. Whenever you need help, start a thread on the support forum or contact us.
Yes, we do. Here is a tutorial for you to quickly get started with CompressX.
Reviews
Perfect plugin. Works effectively.
By 
I saw it on Youtube, and WP-Tuts was promoting it. It is excellent for what I do on the pages.
Seamless WebP magic!
By 
Compress.io turned all my site’s images into WebP in one go — fast, smooth, and effortless. My pages are lighter, faster, and my workflow stayed stress-free. Love it! 🚀
Excellent Plugin!
By 
This is an excellent plugin even in its free version, and does the basic processing of images flawlessly, in my experience. It is clearly explained and shown in Media what images have been processed and gives their sizes and percentage saving right away, giving you the option to delete it individually, or in bulk all of them (in settings). My site images are now serving AVIF, which is even smaller and faster than webp. The support is excellent too and in a timely way they explain what needs to be done. I finally feel I am in stable and solid grounds with my image processing needs.
For those who may wish to know, I do not now need the Polish feature (and its Webp) function of the Cloudflare, so turned it off, since Cloudflare is now using the plugin's AVIF. Of course Cloudflare Pro still does its excellent job of serving how the site wants its images be processed. But for sites with cookies, Cloudflare tends to bypass caching of images of its own and relies on the site's server instructions (in my understanding). Thanks CompressX.
Amazaing Plugin
By 
This is really helpful.
Image Optimizer
By 
Image Optimizer
Great and Free
By 
Great and Free
Excellent
By 
Works nicely just as expected.
Amazing Plug In
By 
Easy to use, and very secure
Great Plugin and Support!
By 
Fantastic plugin for converting my images. When I needed assistance in configuration, John quickly and expertly solved my issue. Thank you!!!!
Five Stars for CompressX
By 
As a web developer constantly battling slow load times, CompressX has been an absolute game-changer for my workflow. The setup was incredibly straightforward, and within minutes I had automatic optimization running on every new upload. The bulk optimization feature processed my entire media library with minimal effort, converting hundreds of images to WebP and AVIF formats without any quality loss.
The results have been outstanding—file sizes dropped, while page load speeds improved dramatically. What I love most is that it's completely hands-off once configured, and the plugin has been rock-solid reliable with zero conflicts or crashes. For any developer serious about site performance, CompressX isn't just helpful—it's essential. Highly recommended and easily worth five stars.
Changelog
0.9.32
- Fixed: Manual image conversions from media library would fail.
0.9.31
- Fixed some bugs in the plugin code.
0.9.30
- Fixed: Custom compression level settings could not be saved.
0.9.29
- Added a compatible rewrite rule option for broader server compatibility.
- Optimized the efficiency of batch scanning, especially for sites with many images.
0.9.28
- Fixed: Incorrect image statistics calculation.
- Added support for image rotation during WebP/AVIF conversion.
- Fixed: Image resizing data could not be updated in the database.
0.9.27
- Refactored the plugin code and optimized the code structure.
- Optimized and reduced CompressX entries in postmeta table.
- Fixed some UI bugs.
0.9.26
- Expanded compatibility to support a wider range of server configurations.
- Added a clear warning about potential AVIF conversion timeouts when using ImageMagick 6.x.
- Enhanced compatibility of .htaccess rewrite rules to accommodate diverse server settings.
- Optimized bulk image processing to skip stuck images.
- Optimized the plugin code.
0.9.25
- Fixed a UI bug.
- Optimized the plugin code.
0.9.24
- Fixed: CDN integration settings could not be saved correctly.
- Optimized the plugin code and UI.
0.9.23
- Added support for conversion of Elementor custom thumbnails size.
- Added support for conversion in media library grid view and image edit page.
0.9.22
- Fixed: Picture tag did not take all sizes in srcset.
- Fixed: Conversion would fail if image’s MIME type did not match the MIME type saved in posts.
- Optimized the plugin UI.
0.9.21
- Added an option of ‘Do not convert PNG to WebP’.
- Added an option to automatically purge cache after manual conversion from media library.
- Optimized the plugin UI.
- Canceled support for grid view of media library. Only list view is supported.
0.9.20
- Optimized process of scanning a large number of images.
- Successfully tested with WordPress 6.7.
0.9.19
- Optimized image scanning method in the bulk processing workflow.
0.9.18
- Fixed: Default compression level for bulk processing was wrongly set to lossless.
0.9.17
- Added an option of ‘picture tag’ to load WebP and AVIF images.
- Optimized the plugin UI.
- Optimized the plugin code.
0.9.16
- Fixed a UI bug that would appear when folders that do not exist were added to exclusion rules.
- Optimized the plugin code.
0.9.15
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
0.9.14
- Added support for multilanguage translation.
- Added an option to exclude PNG images from conversion.
- Added an option to delete cache control settings from .htaccess file.
- Fixed: WebP images could not be displayed as AVIF after conversion.
- Optimized the plugin UI.
- Optimized the plugin code.
0.9.13
- Added support for Cloudflare CDN.
- Fixed: Settings of ‘auto-resizing large images’ could not take effect.
- Optimized the plugin code.
0.9.12
- Fixed a UI bug where WebP option could not be selected in some cases.
- Fixed: Images would be repeatedly processed when EXIF removal option was enabled.
- Optimized the plugin code.
0.9.11
- Added an option to delete converted images.
- Optimized the plugin UI.
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
0.9.10
- Fixed: Image quality would not be changed after AVIF conversion with Imagick.
- Fixed: Incorrect compression quality with Imagick and Lossless compression level.
- Fixed: Custom compression level would not take effect.
- Optimized the plugin code.
0.9.9
- Added an option to set how many images to process per ajax request.
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
0.9.8
- Added a Debug section.
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
0.9.7
- Fixed the path error of rewrite rules that appeared in some environments.
- Fixed: Some settings could not take effect.
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
0.9.6
- Fixed a bug where AVIF output format could not be enabled.
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
0.9.5
- Fixed a bug in the plugin code.
- Optimized the plugin code.
0.9.4
- Fixed a critical bug in the plugin code.
- Optimized the plugin code.
0.9.3
- Fixed a critical bug in the plugin code.
- Optimized the plugin code.
0.9.2
- Added a check for the case where multiple image optimization plugins are activated.
- Fixed some bugs in the plugin code.
- Optimized the plugin code.
- Successfully tested with WordPress 6.6.
0.9.1
- Initial release. Hello world!