Image Optimizer is an easy-to-use WordPress plugin that reduces image size through various compression and resizing techniques – all of which preserve …
- Installs
- 1+ million
- Rating
- 1.7 (81)
- Updated
- 39 days ago
CompressX — AVIF & WebP Converter, Media Replacement
AVIF & WebP converter with built-in media replacement for local image optimization.
- Active installs
- 40,000+
- #824 of 1,000
- Downloads, all time
- 370.8K
- 370,813
- Downloads, 30 days
- 28.9K
- 3.6K in the last 7
- Rating
- 5.0 / 5
- 197 reviews
- Last updated
- 24 days ago
- Oct 7, 2026
- Version
- 0.9.40
- 40 releases
Upkeep and compatibility
| Last updated | October 7, 2026Updated in the last 3 months |
|---|---|
| Tested up to | WordPress 7.1.4Covers WordPress 7.1.4, the current release |
| Needs WordPress | 5.8 or newer |
| Needs PHP | 7.0 or newer |
| First published | June 26, 2024 |
| Support, last two months | 1 of 3 threads resolved (33%) |
Reviews
5.0 / 5 from 197 reviews
| 5 stars | 197 |
|---|---|
| 4 stars | 0 |
| 3 stars | 0 |
| 2 stars | 0 |
| 1 star | 0 |
Downloads, last 30 days
What the author says it does
CompressX is a free, lightweight WebP & AVIF conversion and media replacement plugin for WordPress. It allows you to easily convert JPG and PNG images to WebP and AVIF formats, compress WebP and AVIF images, and replace media files without changing their URLs or attachment IDs. All AVIF and WebP conversions are performed locally on your 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. Media Replacement & Auto Re-Optimization
Safely replace an existing media file without changing its URL or attachment ID. When a new image is uploaded as a replacement, the system automatically regenerates thumbnails, applies your configured format conversion and compression rules, resizes where needed, and re-optimizes the file.
4. Exclude Folders
The opening of the plugin's own description. The full text, installation notes and changelog are on its WordPress.org page.
Questions the author answers
What does CompressX do?
CompressX converts JPG/PNG images on your WordPress website to WebP and AVIF formats, compress WebP and AVIF images locally, and replace existing medias for free!
Does CompressX convert AVIF? Is it a free feature?
Yes, CompressX supports AVIF conversion and compression, the AVIF conversion and compression feature is completely free.
Does CompressX convert WebP? Is it a free feature?
Yes, CompressX supports WebP conversion and compression, the WebP conversion and compression feature is completely free.
Do you provide support for CompressX? Where?
Yes, absolutely. Whenever you need help, start a thread on the support forum or contact us.
Do you have any get-started guides/docs?
Yes, we do. Here is a tutorial for you to quickly get started with CompressX.
Latest changelog entry
- Added the ‘Maximum images per scan request’ option to improve scanning performance.
Screenshots
Converting PNG/JPG images to WebP
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Where this page's numbers come from
Read from the WordPress.org plugin API on , when WordPress 7.1.4 was the current release. WordPress.org rounds active installs into buckets. These are the directory's figures, not my verdict, and I haven't tested this plugin.