File checksum

Work out the MD5, SHA-1, SHA-256 or SHA-512 of a file to check that what you downloaded is what was published. The file never leaves your device.

Up to 20 files, 500 MB each

How it works

1. Pick files — they are checked by content, not by extension.
2. Choose the format and settings.
3. Download the result. We delete everything within a couple of hours.

More in Utilities

File to base64 and backin your browserEncode a file as base64 — to paste an image straight into CSS, say — or decode a base64 string back into a file. The direction is worked out for you.