About File Hash Checker
The File Hash Checker computes SHA-1, SHA-256, SHA-384 and SHA-512 checksums for any file using the browser's SubtleCrypto API. Drag and drop a file, watch the streaming progress bar, and compare the result against an expected hash. File metadata such as size and type is shown alongside. Everything is processed locally in chunks, so large files work too.
Features
- SHA-1, SHA-256, SHA-384 and SHA-512 checksums
- Drag-and-drop any file
- Streaming read with progress bar
- Compare with an expected hash
- File metadata: name, size and type
Frequently Asked Questions
Are my files uploaded?
No. Files are hashed locally in your browser using the SubtleCrypto API and never leave your device.
Can it handle large files?
Yes. Files are read in streaming chunks, so even multi-gigabyte files can be hashed without crashing the browser.