Hash Checker (file integrity)
100% PrivateSecurity & Privacy UtilitiesCompare a file's computed hash with the expected value to confirm it is unchanged.
Runs entirely in your browser. Your input is not uploaded to Ovatly or anywhere else.
- 1Download the file and find the checksum on the publisher's page (often on the same page as the download, or in a checksums file).
- 2Select the file here; it is hashed locally, never uploaded.
- 3Paste the expected hash. Leave the algorithm on Auto-detect unless you know it.
- 4Press Check the file and read the verdict.
Create a text file containing exactly the three letters abc with no trailing newline. Its SHA-256 is ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad, so pasting that value gives a Match verdict. Save the same file with an Enter at the end and the verdict flips to No match, because the newline is part of the file.
- Auto-detect guesses the algorithm from the hash length (32 hex characters means MD5, 64 means SHA-256, and so on). If a site labels its checksum, picking that algorithm yourself removes all doubt.
- A match proves the bytes are identical to the ones the checksum was made from. It does not prove the publisher is trustworthy; get the checksum from the publisher's own site, ideally over HTTPS.
- Upper and lower case and spaces in the pasted value are ignored; everything else must match exactly.
- The file is read into memory for hashing, so extremely large files can be slow on small devices.
Not necessarily: interrupted downloads and wrong files are far more common than tampering. Re-download once, check again, and if it still fails, do not install it and contact the publisher.
About this tool
The Hash Checker answers one question: is this file exactly the file the publisher released? Pick the file, paste the checksum the publisher gave you, and the tool hashes the file on your device and compares the two values, character by character.
Related tools
Part of Ovatly's free tools in Security & Privacy Utilities.