Modular Custom CSS
WordPress core provides custom CSS functionality in the customizer that's specific to the current theme; you can switch themes freely with each t …
Modular Custom CSS ranks #9,592 among WordPress.org plugins with 400+ active installations, a 5/5 rating from 6 reviews, and was last updated Jul 19, 2026. Data from WordPress.org, refreshed twice daily — see methodology.
Next Milestone 500
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Security History
Source: WPVulnerabilityNo known vulnerabilities on record for Modular Custom CSS. Checked 1 month ago.
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- Version
- 2.2
- Last Updated
- Jul 19, 2026
- Requires WP
- 4.9+
- Tested Up To
- 7.0.5
- PHP Version
- N/A
- Author
- Nick Halsey
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 5
- Reviews
- 6
- Support Threads
- 0
- Resolved
- 0%
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TL;DR
AI summary of the plugin's readmeThis plugin is for WordPress site owners and developers who need CSS that applies regardless of which theme is active. It solves the problem of theme-specific custom CSS being lost or inapplicable when switching themes by providing a persistent, global plugin CSS option.
- Global CSS across theme changes
- Customizer live preview support
- CSS stored as an option
- Persists through theme switches
- Migrates legacy theme_mod CSS
Frequently Asked Questions
Common questions about Modular Custom CSS