# apphelp tool profile
name: JWT Decoder
tool: tool-jwtdecoder
domain: jwtdecoder.apphelp.net
canonical: https://jwtdecoder.apphelp.net/en
summary: Decode and inspect JSON Web Tokens locally in the browser without verifying the signature.
inputs: A JWT string with header, payload, and optional signature segments.
outputs: Pretty-printed JSON header and payload, raw signature, and human-readable exp/iat/nbf dates with a validity status.
use-cases: inspect token claims; debug authentication flows; check token expiry; read header algorithm
keywords: jwt decoder, json web token, decode jwt, jwt payload viewer, jwt claims inspector
languages: en, zh-CN, zh-TW, ar, de, fr
seo: locale-routed, canonical, hreflang, sitemap, robots, JSON-LD
geo: llm.txt profile, concise task summary, input/output contract, use-case list, local-first privacy notes
privacy: browser-local processing, no upload by default
analytics: Microsoft Clarity and Google Analytics (opt-in)
no-login: true