CSS Minifier

Normal mode applies only safe optimisations: it removes whitespace and comments, trims redundant units and shortens colour values, with output identical in behaviour to your source. Aggressive mode goes further — it merges duplicate selectors and restructures rules for a smaller file. The result is almost always equivalent, but review the output before shipping if your CSS relies on exact source order.

No — minification runs entirely in your browser using csso, nothing is uploaded. As an EU-built, EU-hosted provider, Uptimeify keeps your workflow off US infrastructure and clear of US Cloud Act exposure, which matters for agencies handling client data under GDPR.

Lean CSS renders faster, and render speed is what your visitors actually feel. Uptimeify measures real response times from multiple EU locations and alerts you the instant a site slows down or breaks — so a bloated stylesheet never quietly drags your pages down.