DIGEST · LOCAL FIRST
Calculate secure text and file checksums
Use your browser's cryptographic API to calculate common SHA-2 digests without uploading the input.
Hash Checksum Open →HOW TO USE
How to use
- 01
Choose SHA-256, SHA-384, or SHA-512.
- 02
Enter text or drop a file into the checksum area.
- 03
Copy the resulting hexadecimal digest and compare it with the expected value.
USE CASES
Use cases
Verify a download
Compare a file's checksum with the value published by its distributor.
Check identical content
Confirm that two text values produce the same digest.
FAQ
Frequently asked questions
Is the file uploaded?
No. The checksum is calculated locally in your browser.
Can a checksum recover the original content?
No. A cryptographic digest is designed as a one-way value, though weak input can still be guessed separately.