Is my text or file uploaded anywhere when I generate a hash?

No. Everything happens locally in your browser using the Web Crypto API. No data leaves your device, so your text and files stay private.

Which hash algorithms are supported?

You can generate SHA-256, SHA-1 and SHA-512 hashes. SHA-256 is the recommended choice for verifying file integrity and checksums.

Can I hash large files?

Yes. Files are read in small chunks, so even very large files can be hashed without freezing the page. A progress bar shows the hashing progress.

How does the hash comparison work?

Paste two hash values into the Compare hashes section. The tool compares them character by character (ignoring case and whitespace) and tells you whether they match.

SHA-256 Hash Generator

Hash text and files online with SHA-256, SHA-1 or SHA-512. Everything runs in your browser — nothing is uploaded.

Privacy: all hashing happens locally in your browser. Your text and files never leave your device. (The Web Crypto API works best on secure HTTPS pages; some older browsers may need HTTPS for file hashing.)

Generate a hash

Algorithm

Output case

lowercase UPPERCASE

Text to hash

Or hash a file

Hash result

Compare hashes

Paste two hash values to check whether they are identical — useful for verifying downloaded files.

Hash A Hash B

About hashing

A hash turns any input into a fixed-length fingerprint. Even a one-letter change produces a completely different hash, which makes hashes ideal for verifying file integrity and checksums.

SHA-256 — the modern standard for checksums and signatures.
SHA-1 — older; kept here for legacy checksums only.
SHA-512 — longer 512-bit digest, slower but stronger.

SHA-256 Hash Generator

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