Get the MD5 or SHA checksum of a file or text, and check a download is intact.
Add a file to see its hashes.
Drop one or more files, or switch to Text.
SHA-256 is the usual choice. MD5 and SHA-1 are for older checks.
Paste the hash the publisher gave you. You see at once whether it matches.
No. The hash is worked out in your browser, so the file never leaves your device.
SHA-256 is the common, strong choice. MD5 and SHA-1 are fine for checking a download was not damaged, but they are not safe against deliberate tampering.
The file is identical, byte for byte, to the one the hash was made from. One changed byte gives a completely different hash.
Files up to 300 MB, and up to 20 at a time. Large files need enough free memory.
Text is hashed as UTF-8. A different line ending, extra space or encoding gives a different hash.