Calculate SHA-1, SHA-256, SHA-384 and SHA-512 checksums of an uploaded file to verify it wasn't corrupted or tampered with.
Upload a file to get started.
Generate a memorable, random multi-word passphrase.
Calculate Flesch Reading Ease and grade level.
Estimate how strong a password is, in bits of entropy.
Check a page's H1-H6 heading outline and hierarchy for structural issues.
Generate a random numeric PIN.