Hash & checksum generator

MD5, SHA-1, SHA-256 and SHA-512 of any text or file — for verifying downloads against a published checksum. Everything is computed on your device; pasting a sensitive value here sends it nowhere.

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.

Text to hash

— or —

Drop files here or click to choose

Any file — read and hashed locally

up to 250 MB

📕

Need more than this page can do?

The PDF Bag of Tools 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

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Decode tokens without pasting credentials into someone's server.

🔡 Base64 encode / decode

Text or files to Base64 and back — Unicode-safe, data URIs included.

🆔 UUID generator

Random v4 or time-ordered v7 UUIDs, in bulk.

🕰️ Timestamp converter

Epoch ↔ date, seconds or milliseconds, local and UTC.

🌈 Color converter

HEX, RGB, HSL, HSV, CMYK — plus WCAG contrast checks.

✏️ Word counter

Live word, character and sentence counts with reading time.

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