SHA-256 File Hash
Opens with SHA-256 already selected, which is what most package managers, release pages and integrity tools publish today.
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Your file is read and processed inside your own browser. It is never uploaded to our server, and it still works with the network unplugged.
How It Works
- Choose — Pick or drop your file into the area above. It stays on your machine unless this tool says otherwise.
- Configure — Set the options that appear once the file is read.
- Run — Press the action button and wait for the result.
- Take it — Download the output, or copy the result if the tool prints one.
Frequently Asked Questions
How large a file can I hash?
Up to 100 MB, because the bytes are read into memory once and handed to the browser crypto layer. Larger files need a streaming tool on a computer with more patience.
Does a matching hash prove a file is safe?
It proves the bytes are identical to whoever published the digest. It says nothing about whether those bytes are trustworthy, and MD5 or SHA-1 specifically can be collided deliberately.
Where does the hashing happen?
Entirely in your browser using SubtleCrypto for the SHA family. The file is never uploaded, which is the main advantage over an online hash service.