Maor Chasen

Winsite

AmitT

Winsite Image Optimizer will compress your images for optimal file-size while keeping its quality (pretty much) intact, using the ImageOptim API (and other processing engines coming up soon).
You can also process all of your old images retroactively using our dedicated tool, found under the Media section.
Currently-implemented Image Processing Services:
<ul>
<li><a href="https://imageoptim.com/api" rel="nofollow ugc">ImageOptim</a> (You’ll need to obtain an <a href="https://im2.io/register" rel="nofollow ugc">API key</a>)</li>
<li>Send your suggestions on our <a href="https://github.com/win-site/winsite-image-optimizer/issues" rel="nofollow ugc">GitHub issue tracker</a>.</li>
</ul>
Warning: This won’t work on localhost in some cases, since some services work in a way that they pull images in from your site. This is why you’ll need a public URL in order to make this work locally. 
You can use a service such as ngrok to achieve that, in conjunction with this filter:
<pre><code>add_filter( 'wsi_siteurl_override', function( $siteurl ) {
 return 'http://ae190611.ngrok.io/path-to-wp-installation/';
} );
</code></pre>
We’d love to recieve contributions / suggestions from you on our <a href="https://github.com/win-site/winsite-image-optimizer/" rel="nofollow ugc">GitHub project</a>.

Winsite Image Optimizer

Better optimization it's so important for websites. This useful plugin work out of the box with minimum attention and maximum optimization.



Work like a charm!

I have been looking for a reliable image compression tool for WordPress for a long time.. Finally found this one that actually does what it should and does it great. Big shout out to the developers!!!



Awesome !

I can't recommend this plugin as it changed lots of file names and duplicated images.

With some regex I managed to get rid of some of its damage, but with large sites this would have been a nightmare

I would say avoid this plugin to be safe, there are better plugins out there for image compressions

Changed all image file names + weird redirects

The plugin worked good and I've been using it for two years. Some of it's functions are basic and it does rename images, which has been a nuisance for me. I had to use another plugin - Media file rename to remove wsi-imageoptim- prefix from filenames (Google uses image filenames for indexing). But there is a saying: you don't look in teeth a horse which was given to you for free. Therefore three stars.

helpful

Image compression for WordPress done right.

rainafarai

Raina Image Compression is a powerful WordPress plugin that automatically optimizes images during upload while giving full control over compression, output format, and metadata. It is designed for site owners who want fast-loading pages, SEO-friendly images, and a reliable system that prevents users from uploading huge, unoptimized files. 
The plugin works with the built-in GD library and intelligently handles JPG, PNG, and WebP formats. It can also convert non-transparent PNGs to JPG, achieving better compression without visible quality loss.
Ideal for multi-author sites or blogs managed by non-technical users, Raina Image Compression operates automatically in the background, optionally sends Telegram notifications, and keeps your image sizes under control.
<h4>Key Features</h4>
Smart Image Optimization 
– Automatically compresses JPG and PNG images. 
– Converts non-transparent PNGs to JPG for better performance.
Output Mode Selection (4 available modes) 
Choose how your images are generated after upload: 
– 1. JPG/PNG ONLY Compresses only JPG and PNG files. 
– 2. WEBP ONLY Creates only a WebP version. 
– 3. JPG/PNG PRIMARY + WEBP COPY Keeps the original JPG/PNG as the main file and creates a WebP copy in the media library. 
– 4. WEBP PRIMARY + JPG/PNG COPY Sets the WebP image as the primary file while retaining a JPG/PNG copy for compatibility.
Maximum Width Control 
Set a maximum pixel width for uploaded images to automatically resize large photos from cameras or smartphones.
Smart JPG Size Reduction (by KB Limit) 
When enabled, the plugin will try to reduce a JPG’s file size to stay below a specific kilobyte (KB) limit by dynamically lowering the quality level until the target is reached. ( ONLY FOR JPG and No transparent PNG )
Compress Only from Post Editor (Optional) 
Option to limit compression to images uploaded directly from the WordPress post editor, excluding other uploads from plugins or themes or media library.
Post Type Filter 
Added a new option to select which post types the plugin should apply to. If none are selected, all post types will be processed.
Keep Original File Copy 
Option to create a full-size copy of the original uploaded image in the media library for backup or archival purposes.
Disable WP Auto-Generated Thumbnails 
Option to disable WP Auto-Generated Thumbnails. Save disk space by preventing WordPress from creating unnecessary image files.
Automatic Metadata Filling 
Automatically fills ALT, Description, and Caption (Excerpt) fields using the parent post information — ideal for improving SEO with no extra effort.
Admin Bar Toggle 
Easily enable or disable compression from the WordPress admin bar without entering the settings page, handy when you want to upload images related to the theme or the builder, basically content not associated with any post type.
Telegram Notifications (Optional) 
If the “Notifications for Telegram” plugin is installed, you will receive a message for each processed image containing: 
– File name 
– Format 
– Compression ratio
Logging 
Can Records all compression events to the WordPress debug log (<code>wp-content/debug.log</code>) for debugging or performance tracking.
Lightweight & Compatible 
– Works entirely on your server with no external API, CDN or remote requests. 
– Fully compatible with shared hosting environments. 
– No third-party dependencies.
<h4>Ideal Use Cases</h4>
<ul>
<li>Websites managed by non-technical users who often upload large, unoptimized images. </li>
<li>Site owners and developers who want full control over compression settings. </li>
<li>Blogs or news sites that require consistent image optimization without external services. </li>
</ul>
<h4>Summary</h4>
Raina Image Compression was built to solve a common problem: users uploading excessively large images that slow down websites. 
It works quietly in the background, optimizing every image for size, speed, and SEO — so your site stays fast, clean, and professional.
<h3>License</h3>
This plugin is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Raina Image Compression

Smart automatic image optimization and compression for faster WordPress sites.

Winsite Image Optimizer vs Raina Image Compression