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

Open Source

The Util Box is open source. You can view the source code, report issues, or contribute on GitHub.

Support Us

If you find The Util Box useful, consider supporting us via GitHub Sponsors. Your support helps keep the site ad-free and continuously improving.

Contact

Have feedback or a tool request? Open an issue on our GitHub Issues page.