Hash Verifier — Free Online Tool
Compute a digest for text or a local file, then compare it with an expected value obtained through a trusted channel. A match proves byte equality with that value; it does not authenticate a file when the file and checksum came from the same compromised source.
100% client-side. No uploads. Your data never leaves your browser.
How to use Hash Verifier
- Enter text or drop a file to compute its hash.
- Select the hash algorithm (SHA-256, SHA-512, or MD5).
- Paste the expected hash value in the 'Expected' field.
- A green checkmark or red X shows whether the hashes match.
Frequently Asked Questions
How do I verify a downloaded file?
Obtain the expected digest through a trusted channel, select the same algorithm, and compare it with the local file. A checksum copied from the same compromised location as the file is not independent authentication.
Which hash algorithms are supported?
SHA-1, SHA-256, SHA-512, and MD5. Use SHA-256 or SHA-512 for security-critical verification; SHA-1 and MD5 are included only for legacy comparisons.
What does it mean if the hashes do not match?
The content is different from what was expected. This could mean the file was corrupted during download, or in the worst case, tampered with.
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