Choose files and a SHA-2 algorithm to generate a checksum manifest for copying or download. Enter an expected hash to compare it with the first selected file.
Runs locally in your browserFile Hash & Integrity Checker belongs to the checksum and hash tools on KivTools. The workbench above handles the whole job on one screen: files chosen from your device, then a text result you can copy.
The conversion runs inside the page with browser JavaScript. Nothing you enter is uploaded, the tool keeps working offline, and it is safe for data you are not allowed to send to a third party.
Cryptographic primitives are easy to call and easy to misuse: the same function that produces a correct digest will happily accept a weak key, a reused nonce or a truncated tag. These tools expose the raw values so you can inspect them, not so you stop thinking about the protocol around them.
Never invent a construction. Combining an encryption function with a hash, a salt or an encoding in the wrong order usually produces something that no longer has the property you wanted, and the result looks correct anyway.
Browsers, desktop tools and command-line utilities should agree on the result; a mismatch usually means a different encoding, locale or version. Verify against a published test vector for the same algorithm, mode and key length; if the vector matches, the implementation is behaving.
Older schemes such as MD5, SHA-1, DES and RC4 stay available for compatibility with existing data, not as recommended choices for anything new. Keep a copy of the input while you experiment, so a wrong setting never destroys the source.
Input: local files selected via picker. Output: the chosen SHA-2 digest, expected-hash comparison result, and a copyable/downloadable checksum manifest.
Verify downloaded software archives against official hashes; generate a release manifest for build artifacts; confirm that a copied or transferred file matches its source digest.
The selected local files are hashed in the browser using JavaScript and the Web Crypto API; their contents are not uploaded to KivTools.
Supported hash algorithms are only SHA-256, SHA-384, and SHA-512; verification cannot use other digest types such as MD5 or SHA-1.
Yes. Every tool on KivTools is free, needs no account and has no usage quota. There is no paid tier hiding behind the workbench, and no email address is required to use the result.
Inside your browser. The page loads a script once and the conversion happens on your machine, which is also why the tool still works when the network drops.
Input: local files selected via picker. Output: the chosen SHA-2 digest, expected-hash comparison result, and a copyable/downloadable checksum manifest. Large inputs are usually handled without trouble, but extremely large ones are better processed in a local command-line tool.
A digest proves integrity, never authenticity: an attacker who can change the file can change the hash too. Compare a small known-good sample first when the output feeds an automated pipeline.
The output is yours: no watermark, no licence tag, no attribution requirement. Check the underlying format or library licence when the result ships in a product.
The page works in any modern mobile browser, and the layout collapses to a single column on small screens. Local tools keep working offline once the page has loaded.