Hash File
This free file hash tool computes a cryptographic checksum — MD5, SHA-1, SHA-256, or SHA-512 — for any file so you can verify integrity or compare copies. Drop a file in and it's hashed on your device in a background worker, so it never leaves your browser.
How to use Hash File
- 1 Drop a file onto the box or click to browse and select one.
- 2 Pick an algorithm: MD5, SHA-1, SHA-256, or SHA-512 (SHA-256 is the default).
- 3 Watch the progress bar as the file is streamed and hashed in chunks — this handles large files.
- 4 Copy the resulting hash, or download it as a checksum file; switch algorithms to re-hash the same file.
Frequently asked questions
Is my file uploaded to compute the hash?
No. The file is read and hashed entirely in your browser using a background worker. Nothing is uploaded, so even sensitive files stay on your device.
Which hash algorithms are available?
You can generate MD5, SHA-1, SHA-256, and SHA-512 hashes. SHA-256 is selected by default, and you can switch algorithms at any time to re-hash the same file.
Can it handle large files?
Yes. The file is streamed and hashed in chunks inside a worker, with a progress bar, so it works on large files without freezing the page.
Does the hash tool work offline?
Yes. GoodWebTools is a PWA, so once loaded it keeps generating checksums with no internet connection.