JWT Debugger
Decode JWT headers and payloads locally. Check supported signatures with your key; decoding alone does not verify a token.
LeetTools · Encoders & Decoders
Encoders & Decoders Tools
Convert text between base encodings, inspect JWT headers and signatures, or read certificates and CSRs locally. Encoding is not encryption, and decoding a token does not establish its validity.
Get the job done
Encoders & Decoders tools
Certificate & CSR Decoder
Read a PEM certificate or CSR in this browser. See the subject, SANs, dates, public key, and fingerprints. Private keys are refused.
Base64 & Base Converter
Encode and decode text with Base64, Base32, Base58, or Base62 in your browser. Encoding changes representation; it does not encrypt data.