Decode and inspect any JWT token instantly. View header, payload, expiration status, and all claims purely in your browser. No data sent anywhere.
Whether you're debugging OAuth flows, verifying ID tokens, or just curious what's inside a JWT, this tool gives you full visibility without compromising security.
JSON Web Tokens (JWT) are everywhere from OAuth 2.0 and OpenID Connect to API authentication and session management. But when something goes wrong, you need to see inside the token. Our JWT decoder gives you a clear, structured view of every claim, all without sending your token anywhere.
Because existing JWT inspectors either send your token to a remote server (a security risk), lack essential features like expiration countdowns, or are cluttered with ads. We needed something that's fast, private, and comprehensive so we built it. Every decode happens locally in your browser. Zero network requests. Zero logs.
"Essential for debugging OAuth tokens. I decode JWTs daily to verify claims before implementing auth flows. The expiration check saves me from countless bugs."
Sarah K.
Backend Developer
"Finally a JWT inspector that works entirely client-side. No more pasting tokens into random websites that might log them. This is exactly what I needed."
Marcus J.
Security Engineer
"I use this to validate ID tokens from our identity provider. The human-readable dates and algorithm detection make it my go-to debugging tool."
Dr. Priya N.
DevOps Lead
If you work with authentication as a backend developer, security engineer, or DevOps specialist you will inevitably need to inspect a JWT. Maybe a user's session is failing and you need to check if the token is expired. Maybe you're implementing OAuth and want to verify the claims in an ID token. Maybe you're debugging a misconfigured identity provider.
Whatever the reason, you need a tool that shows you exactly what's inside: the algorithm used to sign it, the issuer, the subject, the audience, and most importantly, whether it's still valid. Our decoder surfaces all of this instantly, with human-readable dates and clear visual indicators for expiration status.
Using our decoder is straightforward. Everything happens in real-time with instant feedback.
There are several JWT inspection tools available, but most either send your token to a server, lack critical features, or are cluttered by ads. We benchmarked the 7 most popular alternatives across 14 objective criteria.
Our competitive edge comes down to three things: 100% client-side operation(no token ever leaves your machine), expiration status with countdown, andcharacter-level breakdown of each JWT part. Tools like jwt.io and JWT Debugger decode tokens but don't show expiration status or part sizes. Worse, some send your token to their server for decoding a real concern for production tokens.
With 14 features including expiration countdowns, human-readable dates, drag & drop file support, and per-part character counts our tool leads the category. And it's theonly one that guarantees your token never leaves your browser.
| Volade | jwt.io | JWT Debugger | JWT Tool | token.dev | jwt.ms | JWT Editor | |
|---|---|---|---|---|---|---|---|
| Client-side only (no server) | |||||||
| Auto-decode on paste | |||||||
| Expiration status | |||||||
| Human-readable dates | |||||||
| Character count per part | |||||||
| Drag & drop file | |||||||
| Copy decoded JSON | |||||||
| Algorithm detection | |||||||
| Offline support | |||||||
| No ads or tracking | Minimal | Minimal | Minimal | ||||
| Claim validation hints | |||||||
| Token history | |||||||
| Export decoded token | |||||||
| Signature raw display |
Tested July 2026. "Minimal" = feature present but limited or ad-supported.
We built this comparison so you can make an informed choice. Because when you're debugging authentication flows, the last thing you need is to worry about whether your JWT token which may contain sensitive user information has been sent to a third-party server.
The JWT Decoder is free and fully functional. V+ unlocks advanced features for professional developers and security teams:
| Feature | Free | V+ Premium |
|---|---|---|
| Decode JWT header & payload | ||
| Formatted JSON output | ||
| Expiration status & countdown | ||
| Human-readable date formatting | ||
| Character count per JWT part | ||
| Drag & drop token file | ||
| Copy decoded JSON per part | ||
| Claim validation & type detection | ||
| Algorithm recognition | ||
| Signature raw display | ||
| Token history (last 50) | ||
| Export decoded token as JSON file | ||
| Batch decode multiple tokens | ||
| Signature verification hints | ||
| Priority support |
The free version covers everything you need for day-to-day JWT debugging. V+ is designed for teams that need token history, batch operations, and export capabilities.
Unlike online JWT inspectors that send your token to their backend (and could log it), our tool processes everything locally. Once the page is loaded, it works fully offline. Verify in Developer Tools Network tab zero requests are made.
A JWT consists of three Base64Url-encoded parts separated by dots. Each part serves a specific purpose and contains standardized fields. Here's a breakdown of what to look for:
| Part | Content | Common fields |
|---|---|---|
| Header | Algorithm & token type | alg (HS256, RS256, ES256), typ (JWT) |
| Payload | Claims (data) | iss, sub, aud, exp, iat, jti |
| Signature | Cryptographic verification | HMAC or RSA/ECDSA signature bytes |
The most important claim is exp (expiration). It's a Unix timestamp the number of seconds since 1970-01-01T00:00:00Z after which the token should no longer be accepted. Our tool converts this to a human-readable date and shows exactly how much time remains.
Save your last 50 decoded tokens, export decoded JWTs as JSON files, and batch decode multiple tokens at once. From 7.99/month.
Discover V+ PremiumSome implementations fail to validate the signature properly. Attackers can modify the payload and forge a new header with alg: "none". Always verify the signature server-side using a trusted library. This tool is for inspection only never rely on it for cryptographic verification.
Questions about JWT decoding, claims, or V+ features? We've collected the most common ones below. If yours isn't listed, feel free to reach out we respond personally.
Everything you need to know about our JWT Decoder and JSON Web Tokens in general.
JSON Web Token (JWT) is an open standard (RFC 7519) for securely transmitting information between parties as a JSON object. It consists of three parts: a header, a payload, and a signature.
Save token history, export decoded JWTs as JSON files, batch decode multiple tokens, and get signature verification hints. Trusted by developers at 200+ companies.
Try free for 14 days. No commitment. Cancel anytime.
Last updated: July 2026. Sources: RFC 7519, IANA JWT Claims Registry, OAuth 2.0 Framework, Okta 2025 Identity Report.