Unlimited automatic image optimization for WordPress. Compress images, convert to WebP, and improve site speed without losing image quality.
As of April 2026, Robin Image Optimizer is a WordPress image optimier plugin with 100K+ active installations and a 4.4/5 rating from 125 reviews. It has been downloaded 2.1M+ times in total. Requires WordPress 5.6+ and PHP 7.4+. Available on WordPress.org since 2018. Actively maintained — updated within the last month. Downloads are down 13% this week. Support resolution rate: 100%.
🚀 Make Your Website Faster by Reducing Image Weight
Robin Image Optimizer is a WordPress image optimization plugin that can reduce image file size by up to 80% without visible quality loss. It helps speed up your site by compressing images, converting them to modern formats, and optimizing both new and existing images automatically.
Robin Image Optimizer is a smart and advanced free image optimization plugin for WordPress, built with no limits on the number of images, no API keys, and no external CDN dependency. It works locally inside WordPress and supports automatic image optimization, bulk image optimization, and WebP conversion.
Robin is built for site owners who want free image optimization, unlimited WebP conversion, and a simple, local solution that works directly inside WordPress…
It would be nice to add disabling scheduled launch. Manual only
The best plugin for image optimization. But after the latest update, there’s a delay when converting Image Features to webp. Although it might just be my feeling. BTW, thanks.
Your “fix” lasted for about three minutes. I have since then waited to give you time to migrate your servers. I have uninstalled and reinstalled the plugin several times. I have tried to get it to optimise the images about 1000 times. It keeps stopping and throwing up errors. I have wasted hours and days trying to get this thing to work. It’s infuriating!! All this is because you are selling a pro upgrade for a plugin that isn’t currently working, showing a complete disregard for other people.
Easy to use
Does what it says – and does it good
| WordPress | 5.6+ requiredTested up to 6.9.4 |
| PHP | 7.4+ required |
Version 2.0.4 (2026-03-12)
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.