No uploads. No accounts. No waiting.

Useful tools, without giving up your data.

Format, convert, inspect, and generate directly in your browser. Nobuf works locally, loads fast, and stays out of your way.

What do you need to do?K

Runs locally in your browser No account required No cloud upload

Tool library

Explore by category

Jump straight to the right collection. Every tool has a fast, bookmarkable page.

Featured workspaces

Focused workspaces for documents, code, images, time, and the tasks that need a little more room.

No sign-in required

Organize, edit, sign, redact, convert, OCR, and inspect PDFs locally.

Write, inspect, preview, and export professional Markdown documents locally.

Create, browse, extract, encrypt, convert, and inspect archives locally.

Write HTML, CSS, and JavaScript with a sandboxed preview and captured console.

Compare world clocks, convert DST-safe times, plan meetings, and share international events locally.

Explore international holidays, calculate business days, plan leave, and find shared workdays locally.

The Nobuf standard

Your work stays where it belongs: on your device.

Text, tokens, and files are processed by browser APIs on your device.

Static pages are delivered from the edge, with each tool loaded only when you need it.

Security-sensitive tools explain what they do—and what they do not verify.