About Utilium

free . client-side . no account

Utilium is a growing collection of free, fast utilities that run entirely in your browser. There are no servers processing your data, no accounts to create, and no paywalls.

Why it exists

Most online tool sites make you upload your files to their servers, require an account after the first use, or put the interesting features behind a subscription. Utilium is different: every operation happens locally using browser APIs and JavaScript. Your files never leave your device.

Technology

The site is a plain static HTML/CSS/JS project with no build step, no framework, and no backend. It deploys to any static host (GitHub Pages, Netlify, Vercel) and costs essentially nothing to run.

Vanilla JS HTML5 Canvas Web Crypto API PDF.js JSZip Fraunces (font) Outfit (font) DM Mono (font)

Categories

  • Photo & Image — background remover, compressor, resizer, filters
  • PDF & Office — PDF to images, splitter, merger, word counter
  • Dev Tools — JSON formatter, Base64, UUID, hash generator, regex tester
  • Academic — LaTeX cleaner, citation formatter, readability analyser
  • Generators — password, lorem ipsum, colour palettes, ASCII art
  • Converters — unit, colour format, number base, image format

Funding

Utilium is free to use and supported by unobtrusive display advertising via Google AdSense. Ads are the only revenue source and allow the site to stay free and without paywalls.

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