CSS Optimizer – Remove Unused CSS
by wooncherk 3.7 (6 reviews)

CSS Optimizer – Remove Unused CSS

Clean up and remove unused CSS from your website. Also generates Critical CSS to improve PageSpeed Score.

CSS Optimizer ranks #16,630 among WordPress.org plugins with 100+ active installations, is #356 of 1,658 in the Performance category, a 3.7/5 rating from 6 reviews, and was last updated Mar 16, 2022. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 5.9.20 (Current: 7.1.4)
v1.7 Current Version v1.7
Updated 4 years ago Last Update on 16 Mar, 2022
Refreshed 1 week ago Last Refreshed on
#356 of 1,658 in Performance Top 25% by installs No update in over a year
View on WordPress.org
Rank
#16,630
— No change
Active Installs
100+
-9.1%
KW Avg Position
N/A
— No change
Downloads
11.1K
+3 today
Support Resolved
0%
— No change
Rating
74%
Review 3.7 out of 5
3.7 (6 reviews)

Next Milestone 200

Total Progress 9%
100+ 200+
3,956
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro

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Need 91 more installs to reach 200+

Rank Changes

15,799 16,214 16,630 17,046 17,462 31-10-2026 01-11-2026 02-11-2026 03-11-2026 04-11-2026 05-11-2026 06-11-2026 07-11-2026
16,507 16,555 16,604 16,652 16,700 23-10-2026 24-10-2026 25-10-2026 26-10-2026 27-10-2026 28-10-2026 29-10-2026 30-10-2026 31-10-2026 01-11-2026 02-11-2026 03-11-2026 04-11-2026 05-11-2026 06-11-2026 07-11-2026
Current #16,630
Change
Best #

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Active Installs Growth

Active Installs 0,000,000+
Growth +0.0%
Peak 0,000,000

Downloads Growth

0 10 20 31-10-2026 01-11-2026 02-11-2026 03-11-2026 04-11-2026 05-11-2026 06-11-2026 07-11-2026
0 10 20 23-10-2026 24-10-2026 25-10-2026 26-10-2026 27-10-2026 28-10-2026 29-10-2026 30-10-2026 31-10-2026 01-11-2026 02-11-2026 03-11-2026 04-11-2026 05-11-2026 06-11-2026 07-11-2026
Downloads
Growth
Peak

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Reviews & Ratings

3.7
6 reviews
Overall 74%
5
4 (67%)
4
0 (0%)
3
0 (0%)
2
0 (0%)
1
2 (33%)

Security History

Source: WPVulnerability

No known vulnerabilities on record for CSS Optimizer. Checked 3 months ago.

TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to improve their PageSpeed Insights score by cleaning up CSS. It removes unused CSS rules from pages and generates Critical CSS by calling ZippiSite's CSS Optimizer API to detect which CSS rules are actually needed on a given page.

  • Removes unused CSS
  • Generates Critical CSS
  • Improves PageSpeed score
  • Uses ZippiSite CSS Optimizer API
  • Per-page CSS rule detection

Frequently Asked Questions

Common questions about CSS Optimizer – Remove Unused CSS

CSS Optimizer – Remove Unused CSS has 100+ active installations on the WordPress.org plugin directory.
CSS Optimizer – Remove Unused CSS holds a 3.7 out of 5 star rating based on 6 user reviews on WordPress.org.
CSS Optimizer – Remove Unused CSS is developed by wooncherk and published on the official WordPress.org plugin repository.
CSS Optimizer – Remove Unused CSS requires WordPress 4.7 or higher, is tested up to WordPress 5.9.20 and needs PHP 5.1 or newer.
CSS Optimizer – Remove Unused CSS has been downloaded 11,098+ times from WordPress.org.
The latest version of CSS Optimizer – Remove Unused CSS is 1.7. It was last updated on March 16, 2022.
Yes. CSS Optimizer – Remove Unused CSS is a free WordPress plugin available to download and install from the WordPress.org plugin directory.

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