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 #16,590 among WordPress.org plugins with 100+ active installations, is #353 of 1,523 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 (Current: 7.1)
v1.7 Current Version v1.7
Updated 4 years ago Last Update on 16 Mar, 2022
Refreshed 9 hours ago Last Refreshed on
#353 of 1,523 in Performance Top 25% by installs No update in over a year
View on WordPress.org
Rank
#16,590
+35 this week
Active Installs
100+
-16%
KW Avg Position
166
2 worse
Downloads
10.7K
+1 today
Support Resolved
0%
No change
Rating
74%
Review 3.7 out of 5
3.7 (6 reviews)

Next Milestone 200

Total Progress 19%
100+ 200+
9,906
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro

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Need 81 more installs to reach 200+

Rank Changes

16,393 16,458 16,524 16,590 16,655 09-09-2026 10-09-2026 11-09-2026 12-09-2026 13-09-2026 14-09-2026 15-09-2026 16-09-2026
16,223 16,336 16,450 16,564 16,678 01-09-2026 02-09-2026 03-09-2026 04-09-2026 05-09-2026 06-09-2026 07-09-2026 08-09-2026 09-09-2026 10-09-2026 11-09-2026 12-09-2026 13-09-2026 14-09-2026 15-09-2026 16-09-2026
Current #16,590
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 30 09-09-2026 10-09-2026 11-09-2026 12-09-2026 13-09-2026 14-09-2026 15-09-2026 16-09-2026
0 10 20 30 01-09-2026 02-09-2026 03-09-2026 04-09-2026 05-09-2026 06-09-2026 07-09-2026 08-09-2026 09-09-2026 10-09-2026 11-09-2026 12-09-2026 13-09-2026 14-09-2026 15-09-2026 16-09-2026
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 1 month 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 and needs PHP 5.1 or newer.
CSS Optimizer - Remove Unused CSS has been downloaded 10,674+ 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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