1
LiteSpeed Cache Included
Generate UCSS creates per-page used CSS via QUIC.cloud (free quota).
94feature score
WordPress Caching & Speed Plugins with Remove unused CSS
Generates only the CSS each page uses. 10 of the 15 plugins we track include it.
2
xSpeed Cache Paid version Pro
Remove Unused CSS is Pro-only.
100feature score
3
FlyingPress Included
Cloud optimiser extracts used CSS and loads the rest on idle.
97feature score
4
WP Rocket Included
Remove Unused CSS generated by WP Rocket's cloud service, with a safelist.
89feature score
5
NitroPack Paid version Plus
Remove Unused CSS is listed among Plus plan additions.
87feature score
6
Hummingbird Paid version Pro
Full-page critical CSS mode can remove unused CSS.
86feature score
7
W3 Total Cache Paid version Pro
Remove CSS/JS unloads chosen files on chosen pages (manual rules, not automatic).
85feature score
8
WP-Optimize Paid version Premium
Premium removes unused CSS rules (added in v4.3).
80feature score
9
Autoptimize Partial
No rule-level unused CSS removal; Pro can strip unneeded CSS files per page.
70feature score
10
Perfmatters Included
Removes unused CSS; originals can be delayed, async loaded or removed.
50feature score