Security Tools
Explore free online developer tools in this category—formatters, converters, generators, and more. Open any card to use the tool in your browser.
12 tools available
- JWT Decoder OnlineFree online JWT decoder for developers to inspect header and payload claims without verifying signatures.
- JWT Generator OnlineFree online JWT builder for local auth testing—never paste real production secrets into untrusted sites.
- MD5 & SHA Hash Generator OnlineFree online hash generator for MD5, SHA-1, and SHA-256 digests to checksum strings and debug data.
- Secure Password Generator OnlineFree online password generator that creates long, random secrets with symbols for stronger accounts.
- JWT Claims Inspector OnlineFree online helper that surfaces exp, nbf, aud, iss, and related JWT timing claims for auth debugging.
- Luhn Checksum Validator OnlineFree online Luhn validator that checks numeric identifiers for checksum validity—does not verify accounts.
- IBAN Validator OnlineFree online IBAN checker that validates format and mod-97 checksums before payment integrations.
- bcrypt Hash Generator OnlineFree online bcrypt demo that hashes passwords with a cost factor for learning—avoid real secrets here.
- HMAC Signature Generator OnlineFree online HMAC tool that signs messages with a secret for webhook and API authentication tests.
- SHA-256 Checksum Generator OnlineFree online SHA-256 generator for string checksums that verify downloads and detect accidental changes.
- Password Strength Checker OnlineFree online password analyzer that scores length, diversity, and common patterns for safer logins.
- htpasswd Generator OnlineFree online htpasswd line builder for Basic Auth demos—always serve real credentials only over HTTPS.