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Crypto & Security / Integrity check

Checksum & Hash Verifier

Hash a local file or text with SHA-256, SHA-1 and MD5 in the browser, then compare an expected checksum.

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Checksum and hash verifier

Hash a local file or text, then compare it with an expected checksum to review content integrity.

Progress0%

SHA uses Web Crypto; MD5 uses a local compatibility routine.

Hash results

MD5—
SHA-1—
SHA-256—

Waiting for hash calculation.

Features and quick guide

Checksum & Hash Verifier

Useful for checking downloaded files, backups and text integrity.

3-step quick guide

  1. 1
    Enter text or choose a local file.
  2. 2
    Optionally paste an expected checksum.
  3. 3
    Calculate all hashes and review the comparison.

Privacy promise

Files and text stay in this browser tab; no upload endpoint is used.

No login or server-side file processing is used.

Frequently asked questions

Is the file uploaded?

No. The File API reads it only in the current tab.

Which hash should I use?

Prefer SHA-256 for new workflows; use MD5 and SHA-1 only to compare legacy data.

Does comparison care about case?

The tool displays lowercase hashes and compares values case-insensitively.