Password generator
Generate strong, random passwords and passphrases using your browser's secure random generator. Choose length and character sets.
Free web browser tools
Security
Create strong credentials on your own device. Nothing is transmitted or stored on a server.
Hash generator
Generate MD5, SHA-1, SHA-256, SHA-512, SHA3, and CRC32 hashes for text or files. Verify checksums and create HMACs locally.
JWT decoder
Decode JSON Web Tokens to inspect the header and payload, check expiry, and verify HS256, RS256, and ES256 signatures — tokens never leave your browser.
Security FAQs
How are tags used on ReallyUseful.Tools?
Tags group tools by shared traits such as file converter, in browser, or privacy friendly so you can filter the directory by feature.