Security · free
SHA-256 File Hash
Compute the SHA-256 digest of any file locally to verify downloads and detect changes. Files never leave your device.
Drop an image here
or click to browse · any fileFiles are processed locally in your browser and never uploaded.
Computed locally with Web Crypto — the file never leaves your device.
About the SHA-256 File Hash
Compute the SHA-256 digest of any file locally to verify downloads and detect changes. Files never leave your device.
Everything runs in your browser — nothing is uploaded.
How to use the SHA-256 File Hash
- Step 1Drop your image or click to browse.
- Step 2Press Convert.
- Step 3Download the converted file.
When people reach for this tool
Compare a downloaded file with the published digest
This is the standard verification step for installers and archives.
Keep a record of what you shipped
Publishing a digest lets anyone confirm they received exactly your file.
Check that a copy matches the original
A transfer tool that reports a failure is worth double-checking with a hash.
Practical tips
- Hash the file itself rather than a text extract of it. Any difference in the bytes changes the digest.
- A matching digest proves the file is the same, not that it is safe. Only trust a digest published alongside the file it describes.
What you get
- Local canvas conversion
- No uploads, fully private
- Instant preview and download
SHA-256 File Hash — FAQ
Why hash a file?
To verify downloads match the published digest, or to detect changes between copies.
Does this upload my file?
No. The digest is computed in the browser as the file is read locally, so the file never leaves your device.
Where do I find an expected digest?
Usually published next to the download by whoever released the file. Compare against that rather than a value from the same source you downloaded from, which would prove nothing.
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