Head-to-head · October 2026
IOO vs Modern Image Formats
Modern Image Formats comes out ahead, winning 5 of 6 head-to-head checks against IOO.
IOO – Image Offload & Optimize
Image Offload & Optimize is a complete media infrastructure layer for WordPress — handling storage…
Modern Image Formats
This plugin adds WebP and AVIF support for media uploads within the WordPress application. By default, AVIF…
| Metric | IOO | Modern Image Formats |
|---|---|---|
| Active installs | <10 | 100K+ |
| Downloads (30 days) | 79 | 25K |
| Download trend | -64.7% | +11.4% |
| Rating | — | 3.5/5 |
| Reviews | 0 | 25 |
| Health score | 60/100 | 85/100 |
| Last updated | 1 month ago | 1 month ago |
| Tested up to | WP 7.1.3 | WP 7.1.3 |
| Support resolved | — | 100% |
| Requires PHP | 7.4+ | 7.4+ |
| First released | Aug 2026 | Apr 2023 |
Daily downloads, last 90 days
IOOModern Image Formats
Choose IOO if…
You care most about last updated.
- Tested with the latest WordPress (7.1)
- Small user base (<10 active installs)
- Very few reviews so far
Choose Modern Image Formats if…
You care most about active installs, downloads (30 days) and download trend.
- Proven at scale on 100K+ active sites
- Tested with the latest WordPress (7.1)
FAQ
IOO vs Modern Image Formats: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 8, 2026
Which is better, IOO or Modern Image Formats?
Modern Image Formats comes out ahead, winning 5 of 6 head-to-head checks against IOO. Choose IOO if you care most about last updated. Choose Modern Image Formats if you care most about active installs, downloads (30 days) and download trend.
Is IOO more popular than Modern Image Formats?
Modern Image Formats is the more popular of the two with 100K+ active installs, compared with <10 for IOO.
Can I use IOO and Modern Image Formats together?
Both plugins cover AVIF and webp, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.
Are IOO and Modern Image Formats free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.
Powered by PageForge
Want thousands of pages that rank like these? Build them in an afternoon.
This directory runs on the same engine as PageForge. Turn any spreadsheet, CSV or API into thousands of fast, SEO-ready WordPress pages — with schema, internal links and AI-written copy baked in.
- CSV, Google Sheets & API data sources
- AI content, schema & internal links per page
- Works with Elementor, Gutenberg, Yoast & Rank Math
- Free on WordPress.org — no credit card
