Robin Image Optimizer – Unlimited Image Optimization & WebP Converter
Unlimited automatic image optimization for WordPress. Compress images, convert to WebP, and improve site speed without losing image quality.
4.4(125 reviews)
·100K+ active installs·Updated 3 weeks agoAs 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%.
4.4/5125 reviews
100K+active installs
100%resolved
8 yearssince 2018
Overview
🚀 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…
Screenshots
Ratings & Reviews
4.4125 reviews
5 ★
103
4 ★
2
3 ★
3
2 ★
2
1 ★
15
Recent Reviews
Well done
by artblackman·3 weeks ago·1 reply
It would be nice to add disabling scheduled launch. Manual only
Best Plugin
by upges·2 months ago·2 replies
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.
Utter Waste Of Time
by marineheatingsolutions·2 months ago·1 reply
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.
Does what it says
by sorcel·3 months ago·1 reply
Easy to use
Good
by acircus·4 months ago·1 reply
Does what it says – and does it good
Download Trends
Today: 628Yesterday: 717This week: 4KPeriod total: 289K
Compatibility
| WordPress | 5.6+ requiredTested up to 6.9.4 |
| PHP | 7.4+ required |
Version Adoption
v2.0
40.4%
v1.8
19.0%
v1.5
12.0%
v1.6
9.9%
v1.9
7.5%
Frequently Asked Questions
Changelog
Version 2.0.4 (2026-03-12)
Improvements
- Enhanced logging with more detailed error reporting.
Bug fixes
- Included error messages in the dashboard logging reports.
- Resolved an issue where error handling could disrupt the processing queue.
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.