Hash Generator
Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files
Text input
Hashes update automatically as you type. Uploading a file hashes raw bytes instead (shown below).
Compare hashes
Paste two hex digests (spaces ignored, case-insensitive). Useful for verifying downloads.
Compute cryptographic hashes without uploading anything
SHA-256 is everywhere — verifying downloads, signing payloads, comparing files. Computing a hash in the browser keeps the input on your machine via the Web Crypto API, so you can hash sensitive text or large files locally without trusting a server. The tool also supports SHA-1, SHA-384, and SHA-512 for legacy and high-security needs.
Use the generator when you need to
Verify a download against a published checksum
Hash the file and compare against the project's listed SHA-256 to confirm integrity.
Generate a deterministic identifier
Hash a canonical payload to produce a stable ID for caching, deduplication, or content addressing.
Sanity-check a webhook signature
Compute the expected hash of a payload to validate against the signature header from the upstream service.
How to hash text or files quickly
- 1
Paste the text you want to hash, or click Hash file and select a file.
- 2
Pick the algorithm (SHA-1, SHA-256, SHA-384, or SHA-512).
- 3
Copy the resulting hex digest, or use the compare tool to verify against a published checksum.
Keep going
Generate random IDs
Pick UUIDs when you want randomness rather than a deterministic hash.
Encode hash output as Base64
Convert hex digests to Base64 when an API expects them in that form.
Decode signed JWTs
Inspect token signatures alongside hashing utilities when debugging auth.
Validate signed payloads
Confirm the JSON you're hashing is well-formed before computing a digest.
Common hashing workflows
Hash the downloaded file and compare against the project's published checksum before installing.
Hash the canonical payload locally to confirm what the upstream signature should be.
Use the hash of canonical content to identify duplicates without storing the documents themselves.
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Frequently Asked Questions
The tool uses the Web Cryptography API to compute SHA-1, SHA-256, SHA-384, and SHA-512 digests. MD5 is not included because it is not exposed by Web Crypto in browsers.
Click Hash file and select any file. The digest is computed from the raw bytes. Editing the text field switches back to hashing the text content instead.
Paste two hex strings into Hash A and Hash B. The tool normalizes whitespace and case, then shows whether they match — useful for verifying downloads against a published checksum.
No. File contents are read with FileReader and processed only inside your browser using crypto.subtle.digest.