Checksum Generator

Generate multiple checksums for text or files

About the Multi-Algorithm Checksum Generator

This checksum generator computes MD5, SHA-1 and SHA-256 for the same input simultaneously. Projects publish different algorithms, so having all three at once removes the guesswork about which one to run.

A checksum generator that emits several algorithms at once solves an annoying mismatch. You have a file, the project published a digest, and it may be MD5, SHA-1 or SHA-256 depending on how old the release page is — computing all three means always having the one you need.

The algorithms differ in strength but not in the way that matters here. MD5 and SHA-1 are both broken against a deliberate attacker who wants to construct a colliding file, yet both remain perfectly adequate for detecting accidental corruption in transit.

Where the distinction does matter is trust. If the concern is a maliciously substituted file rather than a truncated download, only the SHA-256 value is meaningful — a matching MD5 can be engineered, and has been.

How to use the Multi-Algorithm Checksum Generator

  1. Provide the input. Paste text or select a file.
  2. Read all three digests. MD5, SHA-1 and SHA-256 are computed together.
  3. Match the published one. Compare against whichever algorithm the project listed.
  4. Prefer SHA-256 where offered. Use the strongest published digest when there is a choice.

Multi-Algorithm Checksum Generator features

  • MD5, SHA-1 and SHA-256 computed simultaneously
  • Works on pasted text or selected files
  • No need to know the algorithm in advance
  • Files hashed locally without uploading
  • One-click copy for each digest
  • Runs entirely in your browser

Frequently asked questions

Why compute three algorithms at once?

Projects publish different ones depending on the era of the release page. Having all three removes the guesswork.

Is MD5 still usable?

For detecting accidental corruption, yes. Against a deliberate attacker it is broken, so prefer SHA-256 when it is published.

Is SHA-1 broken too?

Yes, collisions have been demonstrated. It still detects accidental corruption but should not be relied on for trust.

Can I hash a file rather than text?

Yes, and the file is read in your browser rather than uploaded.

Which digest should I trust?

The strongest one published. If the concern is a substituted file rather than a bad download, only SHA-256 is meaningful.