Checksum Generator

Generate multiple checksums for text or files

About the File Checksum Verifier

This tool computes a file checksum in MD5, SHA-1 or SHA-256 so you can compare it against the value a developer published alongside the download. Matching digests confirm the file arrived intact and unmodified, and the file is never uploaded.

Checking a file checksum is the step most people skip and then regret. Software projects publish a digest next to the download precisely so you can confirm the bytes you received are the bytes they released — catching a truncated transfer, a corrupted mirror or, in the worst case, a substituted file.

Several algorithms are offered because projects publish different ones. Older projects still list MD5 or SHA-1, which are fine for spotting accidental corruption even though both are broken against a deliberate attacker. SHA-256 is what current releases publish and the one to prefer when you have a choice.

The file is read in your browser, so a multi-gigabyte installer is hashed locally without being uploaded. Compare the result against the published value character by character — or paste the expected digest and let the comparison be done for you.

How to use the File Checksum Verifier

  1. Select your file. Choose the downloaded file to check.
  2. Pick the algorithm. Match whichever one the developer published — usually SHA-256.
  3. Paste the expected digest. Enter the published checksum to compare against.
  4. Confirm the match. Identical digests mean the file is intact.

File Checksum Verifier features

  • MD5, SHA-1 and SHA-256 in one place
  • Compare against a pasted expected digest
  • Works on files of any size
  • Files hashed locally, never uploaded
  • Clear match or mismatch result
  • Runs entirely in your browser

Frequently asked questions

Why should I verify a checksum?

It confirms the file you received matches what was released, catching truncated downloads, corrupted mirrors and substituted files.

Which algorithm should I use?

Whichever the developer published, and prefer SHA-256 when there is a choice. MD5 and SHA-1 still detect accidental corruption.

Is my file uploaded to check it?

No. The file is read and hashed in your browser, so even a large installer stays on your machine.

What if the checksums do not match?

Do not run the file. Download it again, ideally from a different mirror, and verify once more.

Is MD5 safe to rely on?

For accidental corruption, yes. Against a deliberate attacker it is broken, so use SHA-256 where security matters.