Head-to-head · October 2026
Compatiblizr vs HTML5 Details Polyfill
HTML5 Details Polyfill comes out ahead, winning 5 of 7 head-to-head checks against Compatiblizr.
Compatiblizr
IE 7 and 8 don’t do CSS3 or Media queries so instead of adding the fixes to your theme you can add them via a…
HTML5 Details Polyfill
Adds fallback support for the HTML5 and elements in browsers that don’t support them using Mathias Bynens’ /…
| Metric | Compatiblizr | HTML5 Details Polyfill |
|---|---|---|
| Active installs | 10+ | 50+ |
| Downloads (30 days) | 33 | 70 |
| Download trend | +10% | +70.7% |
| Rating | — | 5/5 |
| Reviews | 0 | 4 |
| Health score | 23/100 | 32/100 |
| Last updated | 12 years ago | 14 years ago |
| Tested up to | WP 3.9.40 | WP 3.4.2 |
| Support resolved | — | — |
| Requires PHP | Any | Any |
| First released | Jul 2014 | Sep 2012 |
Daily downloads, last 90 days
CompatiblizrHTML5 Details Polyfill
Choose Compatiblizr if…
You care most about last updated and tested up to.
- Small user base (10+ active installs)
- Very few reviews so far
- No update in 12 years
- Only tested up to WordPress 3.9 (latest is 7.1)
Choose HTML5 Details Polyfill if…
You care most about active installs, downloads (30 days) and download trend.
- Small user base (50+ active installs)
- Very few reviews so far
- No update in 14 years
- Only tested up to WordPress 3.4 (latest is 7.1)
Both compete in: polyfill
FAQ
Compatiblizr vs HTML5 Details Polyfill: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 14, 2026
Which is better, Compatiblizr or HTML5 Details Polyfill?
HTML5 Details Polyfill comes out ahead, winning 5 of 7 head-to-head checks against Compatiblizr. Choose Compatiblizr if you care most about last updated and tested up to. Choose HTML5 Details Polyfill if you care most about active installs, downloads (30 days) and download trend.
Is Compatiblizr more popular than HTML5 Details Polyfill?
HTML5 Details Polyfill is the more popular of the two with 50+ active installs, compared with 10+ for Compatiblizr.
Can I use Compatiblizr and HTML5 Details Polyfill together?
Both plugins cover polyfill, 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 Compatiblizr and HTML5 Details Polyfill free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.
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