Sanity check: MD5("hello") = 5d41402abc4b2a76b9719d911017c592. Computed with a pure JavaScript MD5 implementation, no libraries, no uploads. Note: MD5 is fine for checksums but not for security; use SHA-256 or SHA-512 for passwords and signatures.
Frequently asked questions
Is my text or file uploaded anywhere?
No. The MD5 algorithm runs entirely in your browser in pure JavaScript, with zero libraries and zero network calls. Your data never leaves your device.
Is MD5 secure?
MD5 is fine for checksums and detecting accidental changes, but it is broken for security purposes because collisions can be crafted. Never use MD5 for passwords or digital signatures; use SHA-256 or SHA-512 instead.
How do I verify a download with this?
Generate the hash of your file here, paste the hash published by the file's source into the compare box, and click Compare. A match means the file arrived intact.
Preview
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