Mobile CSS
This plugin allows you to define different CSS rules that get loaded into the page’s for specific devices.
Consider an alternative
Mobile CSS shows warning signs in 2026 — compare the alternatives below before installing. It runs on 500+ sites, is rated 5/5 and was last updated 13 years ago, and scores 39/100 on our health check.
- Small user base (500+ active installs)
- No update in 13 years
- Only tested up to WordPress 3.6 (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 Mobile CSS stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| css | >100 |
| mobile | >100 |
| phone | >100 |
| style | >100 |
| tablet | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 5 from 6 reviews
About Mobile CSS
From the official readme · v1.2Description
This plugin allows you to define different CSS rules that get loaded into the page’s for specific devices.
Includes checks for 18 different tablet options and 13 different phone options.
This can be useful if you need to target specific phones or tablets to make CSS changes or show certain advertisements for certain devices.
For more options or if you feel like donating, check out the PRO version of Mobile CSS that is available for purchase.
Installation
Drop into either your /mu-plugins/ directory, or your plugins directory and activate it.
- Upload the
mobile-cssdirectory to the/wp-content/plugins/directory, or the/wp-content/mu-plugins/directory. - Activate the plugin through the ‘Plugins’ menu in WordPress (if placed in the the
/wp-content/plugins/directory) - Create CSS rules (custom post type) and select what device they display for.
Changelog
First Release.
1.0
- First Release.
1.1
- Removed edit slug box as it’s not needed.
1.2
- Upgraded Mobile Detection scripting to 2.6.9.
Screenshots
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 Mobile CSS alternatives
All css plugins →
FAQ
Mobile CSS: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 3, 2026
Is Mobile CSS free?
Yes. Mobile CSS is free to download and use from the official WordPress.org plugin directory.
Is Mobile CSS safe to use in 2026?
Mobile CSS shows warning signs in 2026 — compare the alternatives below before installing. It runs on 500+ sites, is rated 5/5 and was last updated 13 years ago, and scores 39/100 on our health check.
How many websites use Mobile CSS?
Mobile CSS is active on 500+ WordPress websites and has been downloaded 13,242 times since it launched in October 2012. It was downloaded 92 times in the last 30 days.
Does Mobile CSS work with WordPress 7.1?
Mobile CSS is officially tested up to WordPress 3.6.1, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was Mobile CSS last updated?
The latest version, 1.2, was released on September 5, 2013 (13 years ago).
Who makes Mobile CSS?
Mobile CSS is developed and maintained by Maxaud.
What are the best alternatives to Mobile CSS?
The most popular alternatives to Mobile CSS are WPCode (3M+ installs), Code Snippets (1M+ installs) and Simple Custom CSS Plugin (100K+ installs).
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