Free online security tools for developers. No signup required, runs in your browser.
Decode JWT tokens and inspect header, payload, and signature — a secure, client-side JWT decoder that runs offline in your browser, no token uploaded.
Generate JWT tokens with custom header and payload — a client-side JWT generator that signs tokens in your browser, no data uploaded.
Generate strong, secure passwords with customizable options — a client-side password generator that creates passwords in your browser, never transmitted.
Generate MD5, SHA1, SHA256, SHA512 hashes from text — a client-side hash generator that computes checksums in your browser without uploading.
Validate JWT tokens by verifying signatures and checking claims - a secure, client-side JWT validator that runs in your browser, no token uploaded.
Generate bcrypt password hashes with configurable rounds - a client-side bcrypt generator that hashes in your browser, never transmitted.