CSS Preprocessors — SCSS & LESS Compilers
Compile SCSS or LESS to standard CSS in your browser. Pair with beautify SCSS or minify CSS for a full workflow.
- Turn SCSS snippets into production CSS without installing Sass locally.
- Compile LESS variables and mixins before minifying for deploy.
- Preview output styles (expanded vs compressed) before sharing code.
Guides
Web Performance Checklist 2026 — 6 Pillars to Audit
A 2026 checklist: minify JS/CSS/HTML, Brotli, images, cache, network, then LCP, INP and CLS thresholds with actions in order.
Critical CSS: Extract, Minify and Inline for LCP
Extract above-the-fold CSS, minify the block, inline it in the head, then load the rest async. How it helps LCP without shipping all styles first.
Tree Shaking vs Minification: What Each One Does
Minification shortens the JS you keep. Tree shaking drops unused modules. See the difference, Vite/Webpack setup, and when to use both.
How to Minify HTML: Complete Guide for Faster Pages
Learn HTML minification: remove comments, whitespace, optional attributes and shrink pages 15–40%. CLI tools, build plugins, and online minifiers.
CSS Minification Guide: CSSO, Unused CSS, Builds
How to minify CSS in 2026: CSSO (and friends), unused-CSS removal, Vite/Webpack, vs an online minifier. Honest limits before you chase bytes.