Drop any file - PDF, ZIP, ISO, EXE, video, image - and we compute its MD5, SHA-1, SHA-256, and SHA-512 hashes locally in your browser. No upload to any server (your file never leaves your device). Hex output is copy-friendly for verification against published checksums or sending in support tickets.
When to use this
Use to: verify a downloaded ISO / installer matches the publisher's checksum (Ubuntu, Debian, Linux distros publish SHA-256), generate file fingerprints for content-addressed storage, deduplicate large file collections, compute Git LFS-style hashes for large binary files.
Frequently Asked Questions
Is the file uploaded to your server?
No - file hashing happens entirely in your browser using the Web Crypto API. The file is read locally, hashed locally, and the hex output is shown locally. Nothing is uploaded; the file never leaves your device.
What's the max file size?
Bounded by your browser's memory. Most modern laptops handle 5+ GB files comfortably for hashing (the file is streamed, not loaded entirely into memory). Phones / older devices may struggle past 1-2 GB.
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