About The Util Box

Our Mission

Build the world's most comprehensive free online utilities platform — 100% client-side, zero ads, no sign-ups. Just tools that work.

Why We Built This

Most online tool sites are cluttered with ads, trackers, and paywalls. We wanted a clean, fast, private alternative where every tool is free, every page loads instantly, and your data never leaves your browser.

Technical Details

Built with Astro 7 (static site generation)
Interactive islands via Preact (3KB min+gzip)
Styled with Tailwind CSS v4
Client-side SQLite via sql.js (WASM) for reference data
Hosted on Vercel global CDN
Zero backend — all processing in your browser
1071 static pages, 524 interactive tools, 0 build errors