Coin flip

A fair coin, flipped with cryptographic randomness — exactly 50/50, no tricks.

This tool runs entirely in your browser — nothing you type or open here is ever uploaded. You can disconnect from the internet after the page loads and it still works.

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The PDF Toolbox desktop app compresses, redacts with verified removal, OCRs scans, repairs damaged files, converts to PDF/A and handles 500-page documents — all offline, on your machine, with the same promise: nothing ever leaves it. See everything it does →

More utilities & calculators

🎲 Dice roller

d4 to d100, one die or a handful, fairly rolled.

⏱️ Stopwatch

Precise stopwatch with laps, right in the tab.

⏲️ Countdown timer

Beeps when done; the tab title shows the time left.

🔑 Password generator

Cryptographically random — created on your device, sent nowhere.

⬜ QR code generator

Any link or text to a PNG QR code — private links stay private.

🔍 QR code reader

Decode a QR from a photo — the content stays on your device.

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