Developer Tools
UUID Generator
Generate fresh random UUIDs for records, test data or code, one at a time or in a ready-to-copy batch.
On your device
Free online tool · No signup
Hash Generator
Get a SHA checksum for text or a file, then compare it with a trusted checksum to check it matches.
- SHA-1, 256, 384 and 512
- Text or file input
- Copy hexadecimal checksums
Works in your browser · Your files stay hereFree · No account · No daily task limit
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How to use Hash Generator
- Choose text or a file as the source.
- Paste the text or select the file; hashes are calculated in your browser.
- Copy a checksum and compare it with a value from a trusted source.
Hash Generator: your questions answered
Which hash should I use for a file checksum?
Choose the same algorithm as the trusted checksum you are comparing against. SHA-256 is a common choice. SHA-1 is included for older compatibility and should not be relied on for collision-resistant security.
Is a hash suitable for storing passwords?
A fast SHA hash alone is not a password-storage scheme. This tool is for checksums and inspection; password storage needs a dedicated password-hashing design.
Privacy
This tool runs entirely in your browser. Your file is processed on your device and is not uploaded to a server. You do not have to take that on trust — the monitor directly beneath the tool reads your browser’s own record of every request this tab made while your file was open.
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