Serve autogenerated WebP images instead of jpeg/png to browsers that supports WebP.
As of April 2026, WebP Express is a WordPress webp plugin with 300K+ active installations and a 4.4/5 rating from 160 reviews. It has been downloaded 4.1M+ times in total. Requires WordPress 4.0+ and PHP 5.6+. Available on WordPress.org since 2018. Recently updated within the last 3 months. Downloads are down 8% this week. Support resolution rate: 0%. Top alternative: EWWW Image Optimizer.
More than 9 out of 10 users are using a browser that is able to display webp images. Yet, on most websites, they are served jpeg images, which are typically double the size of webp images for a given quality. What a waste of bandwidth! This plugin was created to help remedy that situation. With little effort, WordPress admins can have their site serving autogenerated webp images to browsers that supports it, while still serving jpeg and png files to browsers that does not support webp.
The plugin uses the WebP Convert library to convert images to webp. WebP Convert is able to convert images using multiple methods. There are the “local” conversion methods: imagick, cwebp, vips, gd. If none of these works on your host, there are the cloud alternatives: ewww (…
Good plugin. Thanks for the update.
Excelent and good free plugin for convert images jpg/png a webp
This stuff is the real deal: just an app that works, no hassling like premium versions or special features. Thank you.
It works. It’s seamless. It provides clear explanations of all the options. It’s done with the nicest, selfless hacker mindset there is.
While many other optimization plugins try to reduce the server work and get you to use their cloud solution (and pay), this plugin does the most suitable job. Converts the files on request from the end user, doing it on the server. Creating the required sizes and later serving the other users those images.
Practically, if you upload the image and preview your post/page, the converted file is there and no more waiting. No payments, no bloatware.
With popular plugins that’s mostly not the case as they do the bulk conversion by sending the files to their servers and of course – if you pay for it – send back the files when they can. It can take quite some time and often having issues as the sync can run into various troubles on your or their side.
Meaning that with other plugins you may have to wait to have optimized images served (if ever).
With this one, you have it there from the start.
Fantastic job!
| WordPress | 4.0+ requiredTested up to 6.9.4 |
| PHP | 5.6+ required |
(released 25 December 2025)
* Fixed issue that the delete images feature also deleted webp-images that was uploaded as such, when webp-express was configured to store converted images in same folder as originals (not the default option). Also fixed conversion triggered by redirection, which broke on a few systems in a recent update, causing images in the media library not to appear. It may however still be a problem on a very few systems. In that case: Simply disable “Enable redirection to converter” and “Create webp files upon request” and submit an issue.
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.