Wordpress LScache Plugin: Reduce unused CSS (UCSS)
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hello, it seems that reductions of unused CSS (at least when using UCSS) doesnt work. I have both guest mode (& guest optimization) both activated, CSS combine & UCSS activated. I see CSS nicely combined in the coverage console, but I dont see any considerable reduction of the unused CSS. In my case only roughly 10% of UCSS is used (ie. 90% is unused), for the front page of my test site vac922884.cf Entire purge of cache doesnt help (and I have waited 10mins for async generation of UCSS). Ive also tried without guest mode ? no difference. LiteSpeed Cache 4.4.1. https://i.imgur.com/FQXkH1f.png (for comparison, when i deactivate the CSS combine and Generate UCSS and UCSS inline, then the CSS are not merged, which is correct. With similar utilization ? 10% used, 90% unused: https://i.imgur.com/KwvWVJY.png ) So I see no significant reduction of CSS usage in UCSS. This topic was modified 1 year, 2 months ago by vasek608. The page I need help with: http://vac922884.cf Hi, because its not loading UCSS https://www.vac922884.cf/wp-content/litespeed/css/005fad9755ef71c9faf81c3162337e19.css?ver=946ed if its ucss , the file path should be /litespeed/ucss/xxxx and if you go QC dashboard -> page optimization -> ucss , you will see there is some syntax error that prevented UCSS generation Best regards,
LiteCache Rush: Speed comes from using less, not from doing it faster
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