Compatiblizr
Plugin for patching old versions of IE (7 and 8)to work with CSS3 selectors and Media Queries.
Consider an alternative
Compatiblizr shows warning signs in 2026 — compare the alternatives below before installing. It runs on 10+ sites and was last updated 12 years ago, and scores 23/100 on our health check.
- 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)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Compatiblizr stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| CSS3 | >100 |
| ie7 | #55 |
| ie8 | #80 |
| internet explorer | >100 |
| polyfill | >100 |
Version adoption
Share of active sites per release.
About Compatiblizr
From the official readme · v0.4Description
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 plugin. This means when they finally die a death you can drop support without having to update your theme. This also covers purchased themes so you don’t need to alter the actual files.
Installation
- Upload the
compatiblizrfolder to the/wp-content/plugins/directory - Activate the plugin through the ‘Plugins’ menu in WordPress
- Check the options that you would like to include in Settings > Compatiblizr
Changelog
0.4
- Fixed options errors
0.3
- Fixed PHP error
0.2
- Plugin built and assets added.
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Compatiblizr alternatives
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FAQ
Compatiblizr: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 14, 2026
Is Compatiblizr free?
Yes. Compatiblizr is free to download and use from the official WordPress.org plugin directory.
Is Compatiblizr safe to use in 2026?
Compatiblizr shows warning signs in 2026 — compare the alternatives below before installing. It runs on 10+ sites and was last updated 12 years ago, and scores 23/100 on our health check.
How many websites use Compatiblizr?
Compatiblizr is active on 10+ WordPress websites and has been downloaded 2,290 times since it launched in July 2014. It was downloaded 33 times in the last 30 days.
Does Compatiblizr work with WordPress 7.1?
Compatiblizr is officially tested up to WordPress 3.9.40, while the latest release is 7.1.3. It may still work, but try it on a staging site first.
When was Compatiblizr last updated?
The latest version, 0.4, was released on July 20, 2014 (12 years ago).
Who makes Compatiblizr?
Compatiblizr is developed and maintained by Designer023.
What are the best alternatives to Compatiblizr?
The most popular alternatives to Compatiblizr are Image Hover Effects For WPB… (3K+ installs), Easy Textillate (1K+ installs) and Progress Bar (1K+ installs).
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