OCOffCloud.tools
100% client-side — no file uploads, ever

Private utilities. Your files never leave your device.

Five free tools that run entirely in your browser. No uploads, no accounts, no watermarks. Just open and use.

The tools

Everything runs locally — nothing reaches our servers.

Why we built this

Uploading your files is a leap of faith

Most online tools process your files on their servers. That means a stranger's computer sees your passport photo, tax return, or medical document. We thought there was a better way.

Modern browsers are powerful enough

The Web Crypto API, Canvas, WebAssembly, and the File API make it possible to compress images, manipulate PDFs, and generate cryptographically secure passwords entirely in the browser — no server required.

Free shouldn’t mean dark patterns

We’ve seen fake download buttons, forced signups after three uses, and interstitial ads that cover the tool. We’d rather run one honest ad and earn your return visit.

🔒 No file uploads🚫 No accounts required💨 No watermarks🌐 Works offline after first load♿ WCAG AA accessible⚡ Lighthouse 90+ performance

Frequently asked questions