Techbysh

WebPressor is the fastest and most powerful WordPress image optimizer plugin for converting your existing JPEG and PNG media to next-generation WebP and AVIF formats — the two formats recommended by Google for achieving perfect Core Web Vitals and PageSpeed Insights scores.
WebP images are typically 25–35% smaller than JPEG at the same quality. AVIF goes even further — delivering files up to 50% smaller than JPEG and 20% smaller than WebP. By serving these formats automatically to supported browsers, your site loads dramatically faster with zero manual effort.
Version 2.0.0 is a major release introducing AVIF support, a redesigned dashboard, live optimization logs, server-level rewrite rules, system diagnostics, and much more.
<h3>🚀 Why Image Optimization Matters</h3>
Google’s Core Web Vitals (LCP, FID, CLS) are directly impacted by image delivery performance. Large, unoptimized images are the #1 cause of slow page loads and poor PageSpeed Insights scores. WebPressor solves this automatically by:
<ul>
<li>Replacing heavy JPEG/PNG files with lightweight next-gen formats</li>
<li>Serving the smallest possible format each browser supports</li>
<li>Reducing total page weight by up to 50% with zero quality loss</li>
<li>Helping your site pass Google’s “Serve images in next-gen formats” audit</li>
</ul>
<h3>✨ Core Features</h3>
🔹 WebP Conversion — Automatically convert all JPEG and PNG images to WebP format with GD library 
🔹 AVIF Conversion (New in 2.0) — Generate AVIF images for the smallest possible file sizes (PHP 8.1+ with GD AVIF support required) 
🔹 Bulk Optimizer — Process your entire Media Library in batches with a real-time live console log 
🔹 Auto-Convert on Upload — Instantly convert new images as they are added to the Media Library 
🔹 Smart Browser Detection — Serve AVIF to AVIF-capable browsers, WebP to WebP browsers, and original images to legacy browsers 
🔹 Two Delivery Methods — Choose between HTML URL replacement or server-level <code>.htaccess</code> rewrite rules 
🔹 Adjustable Quality Sliders — Independent WebP quality (0–100) and AVIF quality (0–100) controls 
🔹 Lossy & Lossless Modes — Select compression mode for each format 
🔹 Storage Savings Dashboard — See exactly how many megabytes and what percentage you have saved 
🔹 System Status Panel — Checks GD extension, WebP/AVIF availability, folder write permissions, and server type 
🔹 Nginx Configuration Helper — Displays a copyable Nginx server block for manual rewrite rule setup 
🔹 Non-Destructive — Your original JPEG/PNG images are always preserved and never overwritten 
🔹 Compatible With All Themes — Works with Elementor, Divi, Avada, GeneratePress, Astra, Kadence, OceanWP, and more 
🔹 WooCommerce Ready — Optimizes product images, gallery thumbnails, and all image sizes automatically 
🔹 Multisite Compatible — Works on WordPress Multisite installations 
🔹 Translation Ready — Fully localized with <code>.pot</code> file included
<h3>📊 Performance Impact</h3>
 Format 
 Savings vs JPEG 
 Browser Support
 WebP 
 25–35% smaller 
 97%+ of browsers
 AVIF 
 40–50% smaller 
 80%+ of modern browsers
<h3>🛠️ How It Works</h3>
<ol>
<li>Install & activate WebPressor from the WordPress dashboard</li>
<li>Go to the WebPressor → Dashboard in the admin menu</li>
<li>Click Start Optimization to bulk-convert your existing Media Library</li>
<li>Watch the live console log as images are processed in real-time</li>
<li>Monitor your Storage Saved — the dashboard shows total bytes and percentage saved</li>
<li>New uploads are automatically converted in the background (if enabled in Settings)</li>
</ol>
<h3>⚙️ Delivery Methods</h3>
HTML Alteration (Default): 
WebPressor replaces image <code>src</code> URLs in page HTML on-the-fly. Safe, requires no server configuration, and works on any shared hosting.
Server Rewrite Rules (.htaccess): 
For Apache and LiteSpeed servers, WebPressor writes redirect rules directly into <code>/wp-content/uploads/.htaccess</code>. Requests for <code>.jpg</code> and <code>.png</code> files are transparently redirected to their <code>.webp</code> or <code>.avif</code> equivalents — this also handles background CSS images, slider images, and images loaded via JavaScript.
<h3>🔗 Useful Links</h3>
🔹 <a href="https://tbsplugins.com/webpressor-docs/" rel="nofollow ugc">Documentation</a> 
🔹 <a href="https://wordpress.org/support/plugin/tbs-webpressor/#new-topic-0" rel="ugc">Support Forum</a> 
🔹 <a href="https://github.com/TechbyshOrg/tbs-webpressor" rel="nofollow ugc">GitHub Repository</a>
<h3>Source Code & Build Instructions</h3>
This plugin’s JavaScript/CSS assets are minified for production. The original React source code and build tools are available publicly on GitHub.
Repository: 
https://github.com/TechbyshOrg/tbs-webpressor.git
How to build: 
1. Clone the repo: <code>git clone https://github.com/TechbyshOrg/tbs-webpressor.git</code> 
2. Enter the React admin folder: <code>cd react-admin</code> 
3. Install dependencies: <code>npm install</code> 
4. Build production assets: <code>npm run build</code>
<h3>Requirements</h3>
<ul>
<li>WordPress 6.0 or higher</li>
<li>PHP 7.4 or higher (PHP 8.1+ recommended for AVIF support)</li>
<li>GD library with WebP support enabled</li>
<li>GD library with AVIF support (optional, for AVIF conversion)</li>
</ul>

WebPressor – WebP & AVIF Image Converter, Optimizer & Compressor

Convert JPEG & PNG images to WebP and AVIF. Serve next-gen formats automatically. Reduce image sizes up to 50% for a faster, higher-scoring website.

Damir Akhmedshin

Rustam Sibagatov

Images Optimize and Upload CF7 is an extension plugin for <a href="https://wordpress.org/plugins/contact-form-7/" rel="ugc">Contact Form 7</a> plugin, that allows you to upload multiple images using drag-n-drop or simple “Browse” button, and compress them on the client’s side before sending it. If you want to save a user’s time and bandwidth on uploading large images, this plugin is perfect solution. 
Tested with Contact Form 7 version 6.1.6
<h4>Features</h4>
<ul>
<li>Quick compression on the client’s side</li>
<li>Save data by compressing it on the client’s side before sending to the server</li>
<li>Automatically resize images to max 1920px (width or height)</li>
<li>Maintains the aspect ratio of the images</li>
<li>Fix image rotation issue when uploading images from Android an iOS (uses EXIF data)</li>
<li>Highly customizable</li>
<li>File type validation</li>
<li>No limits on input file size</li>
<li>Ajax upload</li>
<li>Drag-n-drop or browse file</li>
<li>Attach compressed files to emails</li>
<li>Adapted to mobile design</li>
<li>Customize file upload thumbnails and drag and drop area layouts</li>
<li>Multiple shortcodes in one form</li>
<li>Identify files by adding ID to the shortcode. The ID value will be used as a prefix in the filename</li>
<li>Set the maximum uploaded files limit in global settings, or in the shortcode</li>
<li>Save or remove all temporary files from the server after sending the form. But if you want to keep the files on the server, please, install <a href="https://wordpress.org/plugins/contact-form-cfdb7/" rel="ugc">Contact Form 7 Database Addon – CFDB7</a> plugin to access the files</li>
<li>Supports Google Chrome, Mozilla Firefox, Microsoft Edge, Safari. Doesn’t support IE 11 and lower</li>
</ul>
<h4>Limitations</h4>
<ul>
<li>Transparent background in PNG files will become solid black</li>
<li>Animated GIF files will only have 1st frame after compression</li>
<li>Doesn’t support IE</li>
</ul>

Images Optimize and Upload CF7


This is invaluable when working with non tech-savvy users who don't know how to reduce the sizes of images before uploading, and a big convenience for other users. I could wish the instructions were a little clearer, and the default values for a lot of the settings results in a very poor-quality image, so I would've chosen different, less strict limits for file size and quality settings. It's also not being updated to reflect the fact that it works with recent WordPress versions -- but it does, so far.



So: not a perfect plugin, but the only one I can find that does exactly what I need for image uploading on CF7.


Does the job without fuss

I like this plugin

Allows uploading and client-side compression of multiple images in Contact Form 7.

WebPressor – WebP & AVIF Image Converter, Optimizer & Compressor vs Images Optimize and Upload CF7