EZ Formatter

JWT Decoder

Decode JSON Web Tokens and inspect header, payload, and expiry claims instantly in your browser

JWT Token
Header (decoded)
Payload (decoded)

JWT Decoding Tips

  • A JWT is three Base64URL-encoded parts joined by dots: header.payload.signature.
  • Decoding only reveals the contents — the signature is not verified without the secret key.
  • Never paste production tokens into tools that run on a server. This decoder runs 100% in your browser.
  • The exp claim is a Unix timestamp in seconds; this tool converts it to your local time automatically.

Fitur Pemrosesan JWT Decoder Profesional

Semua yang Anda butuhkan untuk bekerja dengan data JWT Decoder secara efisien dan profesional

Structure Validation

Instantly checks the header.payload.signature format and reports malformed tokens with a clear error message.

Formatted JSON Output

Decoded header and payload are pretty-printed with two-space indentation, ready to read or copy.

Expiry Panel

exp, iat, and nbf claims are converted to your local time with a valid/expired badge at a glance.

UTF-8 Safe

Non-ASCII claim values such as names in other languages decode correctly thanks to proper UTF-8 handling.

Instant Decoding

Long-lived access tokens and refresh tokens decode in milliseconds with zero network activity.

Zero Setup

No installs, no accounts, no extensions. Open the page, paste, and decode.

Cara Kerjanya

Langkah sederhana untuk memproses JWT Decoder Anda seperti seorang profesional

1

Paste Your Token

Copy the JWT from your request header, cookie, or logs and paste it into the input area.

2

Click Decode

The header and payload are Base64URL-decoded and formatted as JSON instantly.

3

Inspect the Claims

Read the algorithm, subject, scopes, and the expiry panel showing whether the token is still valid.

4

Copy & Continue

Copy the decoded payload JSON for debugging, documentation, or support tickets.

Formatter & Validator JWT Decoder Profesional

Dipercaya oleh jutaan pengembang di seluruh dunia untuk pemrosesan JWT Decoder yang andal

Dibangun oleh Ahli

Our JWT decoder implements the RFC 7519 structure directly in your browser: it splits the JWS compact serialization, Base64URL-decodes the header and payload, and renders the claims as formatted JSON. The expiry panel turns raw Unix timestamps into your local time so you can tell at a glance whether a token is still valid.

Fitur Teknis Utama:

  • • Full Base64URL decoding with proper UTF-8 and padding handling
  • • Human-readable expiry panel for exp, iat, and nbf claims
  • • Instant formatting of decoded header and payload JSON
  • • Client-side processing - tokens never leave your device
  • • Supports HS256, RS256, ES256 and all other JWS algorithms

Dipercaya & Aman

Trusted by developers who handle authentication daily. Because decoding happens entirely on your machine, access tokens, refresh tokens, and ID tokens are never transmitted anywhere — which is exactly how a JWT inspector should work.

Keamanan & Privasi:

  • • 100% client-side decoding - no server uploads, ever
  • • No tracking, cookies or token logging
  • • HTTPS encryption for secure connections
  • • Signature is displayed but never verified remotely
  • • GDPR and CCPA compliant approach

Mengapa Profesional Memilih EZ Formatter

99.9%
Keandalan Waktu Aktif
<100ms
Waktu Pemrosesan Rata-rata
10M+
File JWT Decoder Diproses Bulanan

Bergabunglah dengan jutaan pengembang yang mempercayai formatter JWT Decoder kami untuk alur kerja pengembangan harian mereka. Tidak perlu registrasi, sepenuhnya gratis, dan dibangun dengan privasi dalam pikiran.

Pertanyaan yang Sering Diajukan

Pertanyaan umum tentang format Jwt Decoder yang terjawab

Yes, it is completely free with no registration required. All decoding happens in your browser.

No. Decoding is not verification: without the secret or public key, a signature cannot be checked. This tool shows the signature as-is so you can inspect it, but treats the claims as unverified data, which is the correct behavior for a client-side decoder.

Never. The decoder is plain JavaScript running on this page. Your token is not transmitted, logged, or stored — close the tab and it is gone.

The exp, iat, and nbf claims are Unix timestamps in seconds, converted to your local timezone. If the result looks wrong, check that your device clock and timezone are set correctly.

Unsigned tokens with alg "none" decode fine. Encrypted JWE tokens (five-part tokens) are not supported, since decryption requires the key.

Alat Terkait

Formatter JSON

Format, validasi, dan percantik data JSON dengan indentasi cerdas dan penyorotan sintaks

Formatter XML

Format, validasi, dan percantik dokumen XML dengan penyorotan sintaks dan deteksi kesalahan

Formatter SQL

Format dan percantik kueri SQL dengan indentasi cerdas dan penyorotan sintaks