How to Verify a File's SHA-256 or MD5 Checksum in Your Browser
Software releases publish SHA-256 checksums so you can confirm an installer or archive was not corrupted or tampered with during download.
Free Tool
Cryptographic Hash, HMAC & File Checksum Calculator
No account required · Free forever
Step-by-Step Guide
- 1
Switch to Local File Checksum
Select the downloaded archive or binary from your disk.
- 2
Paste the expected checksum
Paste the publisher's hex string into the verification field.
- 3
Confirm exact match
The tool highlights which digest algorithm matches byte-for-byte.
Who This Is For
Developers & Sysadmins
Validating ISO, CLI binary, and package integrity before installation.
Frequently Asked Questions
Is the file uploaded to calculate the hash?
No. Browser SubtleCrypto hashes the ArrayBuffer directly on your device.