ClearPaste · Security Tools

Hash Generator (SHA)

Last updated: August 28, 2026

Paste text, get its SHA-1, SHA-256, SHA-384 and SHA-512 hashes — computed locally with the Web Crypto API.

Runs in your browser — nothing uploaded

What it produces

All four common SHA variants at once, as lowercase hex — the format used by git, package checksums and most verification guides. Hashing happens through the browser's native Web Crypto API.

Use cases

Verifying a downloaded file's checksum against a published digest. Fingerprinting a config or text blob. Checking whether two versions of a text differ without reading them line by line.

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Frequently asked questions

Is a hash reversible?

No — hashing is one-way. That is the point: compare hashes without exposing the original.

Is SHA-1 safe?

For checksums it is fine; for signatures it is deprecated. Prefer SHA-256 or above.

Can it hash files?

Not yet — text only. ponytail: drag-and-drop file hashing when needed.