Title: DZIEWA Media Converter — AVIF + WebP Author: Rafał Dziewa Published: May 10, 2026 Last modified: May 10, 2026 --- Search plugins ![](https://s.w.org/plugins/geopattern-icon/dziewa-media-converter-avif-webp.svg) # DZIEWA Media Converter — AVIF + WebP By [Rafał Dziewa](https://profiles.wordpress.org/putiek/) [Download](https://downloads.wordpress.org/plugin/dziewa-media-converter-avif-webp.1.5.23.zip) * [Details](https://wordpress.org/plugins/dziewa-media-converter-avif-webp/#description) * [Reviews](https://wordpress.org/plugins/dziewa-media-converter-avif-webp/#reviews) * [Installation](https://wordpress.org/plugins/dziewa-media-converter-avif-webp/#installation) * [Development](https://wordpress.org/plugins/dziewa-media-converter-avif-webp/#developers) [Support](https://wordpress.org/support/plugin/dziewa-media-converter-avif-webp/) ## Description DZIEWA Media Converter creates sidecar `.avif` and `.webp` files next to your originals( no replacement of JPG/PNG in the Media Library). On the front end it can rewrite` ` tags to `` so browsers pick AVIF/WebP when available. The plugin is **entirely free to use** — no license fees, no pro version, and no paid add-ons. #### How it works The plugin generates additional AVIF and/or WebP files beside every JPEG/PNG you upload. Originals are never touched or replaced — they remain in the Media Library and on disk as a safe fallback. The optional content filter detects `` tags in your post content and wraps them in `` so modern browsers download the smaller AVIF/WebP version, while older browsers transparently fall back to JPG/PNG. #### Conversion * **AVIF + WebP, AVIF-only or WebP-only** output modes. AVIF requires PHP GD built with AVIF support; the plugin auto-detects this on activation and gracefully falls back to WebP-only when AVIF is unavailable. * **Configurable quality** per format (independent AVIF and WebP quality sliders in settings). * **Automatic conversion on upload** — new attachments are converted in the background via WP-Cron or Action Scheduler (when available), so the upload screen never blocks. * **Intermediate sizes (thumbnails)** are optionally converted too, so every srcset variant has its own AVIF/WebP sidecar. #### Existing media * **Background queue** processes already-uploaded images in configurable batches( default 20 files per run, range 5–200). You can scope the queue to a single uploads subfolder and/or a date range to avoid scanning the whole library at once. * **Bulk action in the Media Library** — select images and run **Convert to AVIF/ WebP** from the bulk menu. * **Per-attachment button** — Media Library list, attachment edit screen and media modal each show a **Convert to AVIF/WebP** button next to live savings stats ( before/after size, percentage saved per format). #### Front end (content rewriting) * Optional `` rewrite in `the_content` and post thumbnails — browsers automatically pick the lightest format they support. * Lookup of attachment IDs from URLs is cached in the WordPress object cache (Redis/ Memcached when available) and memoised per request, so heavy pages with many images stay fast. #### Tools & admin UI * **Cleanup tool** — remove old generated `.avif` / `.webp` sidecars by age (30/ 60/90/120 days) and folder scope, with a per-folder picker. * **Admin bar download** — optional link on singular posts/pages to download the original JPG/PNG of the featured image (useful for social platforms that don’t accept AVIF/WebP). * **Event log** — last 100 events (errors, conversions, queue runs) visible on the settings page. * **Three-option uninstall dialog** — when removing the plugin you choose between _Cancel_, _Remove (keep generated files)_ or _Remove and delete files_. #### Privacy & dependencies * No external services, no remote calls, no tracking. Everything runs on your own server. * Requires PHP 8.3+ and PHP GD with WebP support (`imagewebp`). AVIF is optional. * Fully translated to Polish; English source strings ready for further translations via GlotPress. ## Installation 1. Upload the plugin folder to `/wp-content/plugins/` or install through the Plugins screen. 2. Activate the plugin. PHP must support WebP in GD (`imagewebp`); AVIF is optional and auto-detected. 3. Configure settings under **Settings DZIEWA Media Converter** in the admin menu, or use the **Settings** link in the Plugins screen. ## FAQ ### Does this replace my JPG/PNG files? No. Original files stay in place; AVIF/WebP are additional files beside them. ### What if my host has no AVIF in GD? The plugin falls back to WebP-only modes and explains this on the settings page. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “DZIEWA Media Converter — AVIF + WebP” is open source software. The following people have contributed to this plugin. Contributors * [ Rafał Dziewa ](https://profiles.wordpress.org/putiek/) [Translate “DZIEWA Media Converter — AVIF + WebP” into your language.](https://translate.wordpress.org/projects/wp-plugins/dziewa-media-converter-avif-webp) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/dziewa-media-converter-avif-webp/), check out the [SVN repository](https://plugins.svn.wordpress.org/dziewa-media-converter-avif-webp/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/dziewa-media-converter-avif-webp/) by [RSS](https://plugins.trac.wordpress.org/log/dziewa-media-converter-avif-webp/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.5.23 * **New:** _Uninstall behavior_ option in settings — opt-in checkbox to delete all generated `.avif` / `.webp` files when removing the plugin. Default is to keep the files (safe for reinstall). #### 1.5.22 * **Frontend admin bar (optional):** new setting to show a **Download original featured image** link on singular posts/pages (when a featured image exists). Serves the original JPG/PNG from disk with a forced download, useful for social platforms that expect a non–AVIF/WebP master file. Requires a user who can edit the post; uses a nonce on the download URL. ## Meta * Version **1.5.23** * Last updated **3 months ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **6.9.5** * PHP version ** 8.3 or higher ** * Tags * [AVIF](https://wordpress.org/plugins/tags/avif/)[images](https://wordpress.org/plugins/tags/images/) [optimization](https://wordpress.org/plugins/tags/optimization/)[performance](https://wordpress.org/plugins/tags/performance/) [webp](https://wordpress.org/plugins/tags/webp/) * [Advanced View](https://wordpress.org/plugins/dziewa-media-converter-avif-webp/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/dziewa-media-converter-avif-webp/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/dziewa-media-converter-avif-webp/reviews/) ## Contributors * [ Rafał Dziewa ](https://profiles.wordpress.org/putiek/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/dziewa-media-converter-avif-webp/)