Title: WebP Image Converter & Replacer – Convert to WebP, No Duplicates Author: Core Essentials Published: June 30, 2025 Last modified: October 27, 2025 --- Search plugins ![](https://ps.w.org/webp-image-converter-replacer/assets/banner-772x250.png?rev =3319729) ![](https://ps.w.org/webp-image-converter-replacer/assets/icon.svg?rev=3319732) # WebP Image Converter & Replacer – Convert to WebP, No Duplicates By [Core Essentials](https://profiles.wordpress.org/coreessentials/) [Download](https://downloads.wordpress.org/plugin/webp-image-converter-replacer.1.1.3.zip) [Live Preview](https://wordpress.org/plugins/webp-image-converter-replacer/?preview=1) * [Details](https://wordpress.org/plugins/webp-image-converter-replacer/#description) * [Reviews](https://wordpress.org/plugins/webp-image-converter-replacer/#reviews) * [Installation](https://wordpress.org/plugins/webp-image-converter-replacer/#installation) * [Development](https://wordpress.org/plugins/webp-image-converter-replacer/#developers) [Support](https://wordpress.org/support/plugin/webp-image-converter-replacer/) ## Description **WebP Image Converter & Replacer** converts your images (JPEG, PNG, static GIF) to **WebP**, replaces originals **only when smaller**, and updates database references so your site transparently serves `.webp`. No duplicate files. No front-end bloat. Just **faster pages** and **less disk usage**. **Why this plugin** – **No Duplicate Images:** Converts and replaces originals when WebP is smaller, keeping `/uploads` lean. – **Real Performance Gains:** WebP typically reduces size ~25–35% at similar quality, aiding Core Web Vitals. – **Safety First:** Never deletes the original unless conversion succeeds **and** the WebP is smaller. – **Full DB Integration:** All generated sizes are converted; URLs in content/meta are updated to `.webp`. – **On-Server Only:** Uses PHP **GD** or ** Imagick**. No external API, keys, or privacy concerns. – **Lightweight:** Runs only during conversion—nothing extra on the front end. **Free features** – Convert individual images from **Media Library** (list view).–** Optimization Overview** with counts: convertible, converted, remaining, skipped, failed, total space saved. – Smart memory handling to avoid PHP exhaustion on large images. **Premium features** – **Auto-convert on upload:** New images become WebP automatically.–** Bulk convert selected:** Multi-select in Media Library (list view). – **Bulk convert all:** Library-wide conversion with progress + pause/resume. > Whether you’re tight on storage or chasing better performance, this is a **safe, > effective** way to modernize images. **IMPORTANT:** Because originals may be deleted, **back up** your `/wp-content/uploads/` and database before converting. Test on staging if possible. ### How it works 1. Plugin checks server support (GD/Imagick with WebP). 2. You convert images (single/bulk/premium auto). 3. If the `.webp` is smaller, the original file is removed and **all DB refs switch to `.webp`**. 4. Your site now serves WebP transparently—no theme changes required. ### Usage **Optimization Overview** – **Settings Media** “WebP Image Converter & Replacer”– See totals converted/remaining/skipped/failed and **space saved**. **Convert individual images** – **Media Library** (list view) **Convert to WebP** link under each item. **Premium** – **Auto-convert on upload**: toggle under **Settings Media**. – ** Bulk convert selected**: select items in Media Library (list view) bulk action ** Convert to WebP**. – **Bulk convert all**: **Start Bulk Optimization** with progress + pause/resume. **After conversion** – Verify pages serve `.webp` in browser dev tools. – Clear any caches/CDN. ### Phoenix Media Rename Integration We integrate with [**Phoenix Media Rename**](https://en-gb.wordpress.org/plugins/phoenix-media-rename/) to safely update **all** database references. **Why Phoenix?** – Mature, reliable database URL updates across posts, custom fields, widgets, Customizer, etc. – Reduces risk vs. “DIY” find/replace logic used by other optimizers. – Lets this plugin focus on **conversion** while Phoenix handles **DB updates**. **Flow** 1. Convert to WebP. 2. Phoenix updates URLs from `.jpg/.png/.gif` to `. webp`. 3. Your site serves WebP with no broken links. ## Screenshots [⌊Optimization Overview – library status and space saved⌉⌊Optimization Overview – library status and space saved⌉[ Optimization Overview – library status and space saved [⌊Phoenix Integration Status – compatibility & guidance⌉⌊Phoenix Integration Status– compatibility & guidance⌉[ Phoenix Integration Status – compatibility & guidance [⌊Media Library – “Convert to WebP” links⌉⌊Media Library – “Convert to WebP” links⌉[ Media Library – “Convert to WebP” links [⌊Example Savings – footprint cut after conversion⌉⌊Example Savings – footprint cut after conversion⌉[ Example Savings – footprint cut after conversion [⌊Premium – bulk convert & auto-convert on upload⌉⌊Premium – bulk convert & auto- convert on upload⌉[ Premium – bulk convert & auto-convert on upload [⌊Dev Tools – confirming .webp on the front end⌉⌊Dev Tools – confirming .webp on the front end⌉[ Dev Tools – confirming `.webp` on the front end ## Installation 1. **Back up** `/wp-content/uploads/` and your database. 2. Install via **Plugins Add New** (search “WebP Image Converter & Replacer”) or upload the ZIP. 3. Activate. 4. Ensure **Imagick** or **GD** with WebP is available (the plugin will warn if not). 5. Go to **Settings Media WebP Image Converter & Replacer** for overview & tools. 6. (Recommended) Install **Phoenix Media Rename** for robust database URL updates ( see below). ## FAQ ### Will this plugin delete my images? Only if the WebP conversion **succeeds** and the WebP is **smaller**. Otherwise, the original stays. Always keep backups. ### Why are the “space saved” numbers sometimes larger than the single file size? WordPress creates multiple thumbnail sizes. Savings are calculated across **the original + all thumbs** vs. **their WebP equivalents**. Thumbnails can outweigh the original file, so total savings can exceed the original’s size. ### What if I uninstall the plugin? Your site will continue serving the existing WebP files. Settings are removed; deleted originals are not restored. ### Does this compress or just change format? It **converts** format using standard WebP quality defaults (approx. 80–85). No downscaling or custom per-image quality controls in this version. ### Can I change WebP quality? Not via UI. Advanced users can modify via filter hooks. ### AVIF or other formats? Currently WebP only. AVIF may be added when browser and server support are broadly stable. ### Animated GIFs? We auto-detect animated gifs and mark them as skipped, we do not convert them. ### Multisite support? Yes. Network-activate, then run conversions per site. Always back up each site first. ### I hit a timeout/error. Use bulk pause/resume, try smaller batches, or raise PHP memory/time limits. The plugin includes memory guards, but extreme libraries may need server tweaks. ### Does it support all browsers? Modern browsers do. Legacy/very old browsers may not; if those matter, use a different approach. ### Why use Phoenix Media Rename instead of doing DB updates internally? We rely on a dedicated, proven solution for comprehensive, safe URL updates—lower risk, better coverage. ## Reviews ![](https://secure.gravatar.com/avatar/601bd759e8d99d160c94ecf7b79c36b2574cd359bb24a8300a5df05f6355cf39? s=60&d=retro&r=g) ### 󠀁[Easy, quick, perfect for my purpose!](https://wordpress.org/support/topic/easy-quick-perfect-for-my-purpose/)󠁿 [gruni73](https://profiles.wordpress.org/gruni73/) September 11, 2025 I was looking for a way to inside optimize the size of images on my website (.png to .webp) and found this plugin. Quick installation, easy to use. Just a link next to the media file. The bulk conversion didn’t work, so I wrote to the developer. He helped and fixed the problem quickly. Richard handled my problem with understanding and support, so I only get 5*. Thank you! ![](https://secure.gravatar.com/avatar/cae002437e93d3e5c92ebcc9560d88b58058f626d87d0d94c099ca638a8fdf72? s=60&d=retro&r=g) ### 󠀁[Worst experience! waste of time](https://wordpress.org/support/topic/worst-experience-waste-of-time/)󠁿 [Robi22](https://profiles.wordpress.org/robi22/) July 7, 2025 1 reply You know when you follow instructions and none of these instructions are available to only pay for premium version, such a wate of time [ Read all 2 reviews ](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/) ## Contributors & Developers “WebP Image Converter & Replacer – Convert to WebP, No Duplicates” is open source software. The following people have contributed to this plugin. Contributors * [ Core Essentials ](https://profiles.wordpress.org/coreessentials/) [Translate “WebP Image Converter & Replacer – Convert to WebP, No Duplicates” into your language.](https://translate.wordpress.org/projects/wp-plugins/webp-image-converter-replacer) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/webp-image-converter-replacer/), check out the [SVN repository](https://plugins.svn.wordpress.org/webp-image-converter-replacer/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/webp-image-converter-replacer/) by [RSS](https://plugins.trac.wordpress.org/log/webp-image-converter-replacer/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.1.3 * Bug fix: “Fix WebP MIME Types” Utility * Enhancement: MIME type updated after metadata generation #### 1.1.2 * Enhancement: Animated GIFs – Better protected & auto-skipped * Enhancement: Oversized images – Detected & auto-skipped * Enhancement: Server limits – Respects ImageMagick & WebP constraints * Bug fix: Large images: 5-min timeout + execution limit * Bug fix: Timeout handling – Client-side polling for accuracy #### 1.1.1 * Bug fix: improved handling of premium activation edge cases. #### 1.1.0 * Major: Auto-Convert on Upload (Premium) * Major: Optimization Overview (real-time stats) * Enhancement: Phoenix Media Rename integration + auto-install/activation help * Enhancement: Memory management to prevent PHP exhaustion on large images * Enhancement: Stats cleanup on media deletion * Enhancement: Bulk conversion with pause/resume and better progress * Enhancement: Bulk select conversion via Media Library * Enhancement: Caching for faster operations * Enhancement: Better error handling and debug logging * Enhancement: WPCS compliance and clearer UI messaging * Bug fix: improved handling of animated GIFs in stats and conversion logic #### 1.0.1 * Minor fixes and performance improvements * Enhanced compatibility testing #### 1.0.0 * Initial release: manual bulk conversion, automatic replacement when WebP is smaller, individual conversion links, JPEG/PNG/static GIF support, GD/Imagick required. ## Meta * Version **1.1.3** * Last updated **8 months ago** * Active installations **100+** * WordPress version ** 5.8 or higher ** * Tested up to **6.8.5** * PHP version ** 7.4 or higher ** * Tags * [convert to webp](https://wordpress.org/plugins/tags/convert-to-webp/)[image optimization](https://wordpress.org/plugins/tags/image-optimization/) [media library](https://wordpress.org/plugins/tags/media-library/)[webp](https://wordpress.org/plugins/tags/webp/) [webp converter](https://wordpress.org/plugins/tags/webp-converter/) * [Advanced View](https://wordpress.org/plugins/webp-image-converter-replacer/advanced/) ## Ratings 3 out of 5 stars. * [ 1 5-star review ](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/?filter=2) * [ 1 1-star review ](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/webp-image-converter-replacer/reviews/) ## Contributors * [ Core Essentials ](https://profiles.wordpress.org/coreessentials/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/webp-image-converter-replacer/)