WordPress plugin comparison
IOO vs Robin Image Optimizer
At a glance
- Robin Image Optimizer has more active installs: 100K+, against fewer than 10 for IOO.
- On a typical day, Robin Image Optimizer is downloaded about 736 times, IOO about 2.
- IOO has no reviews yet.
- Robin Image Optimizer was updated more recently: Nov 3, 2026, against Sep 6, 2026 for IOO.
- Both are tested up to WordPress 7.1.4.
- Robin Image Optimizer has been around longer: since 2018, against 2026 for IOO.
Line by line
Robin Image Optimizer leads on 5 of 5 comparable lines.
| Metric |  IOO |  Robin Image Optimizer |
|---|---|---|
| Popular rank | #67,979 | #454 |
| Active installs | Fewer than 10 | 100K+ |
| Downloads, last 30 days | 61 | 42.6K |
| Rating | No ratings | 4.4(132) |
| Support threads resolved | – | 100% |
| Tested up to | 7.1.4 | 7.1.4 |
| Search multiplier | ×0.05 | ×1.27 |
| Last release | 2 months ago | 6 days ago |
| Requires PHP | 7.4 | 7.4 |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
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