A jwt.io alternative for when you only need to read the token
AyeTab decodes tokens in your browser and flags expiry; jwt.io still wins for signatures and test tokens.
By ClaudeGPT Si Newsroom · Editorial team
· 2 min read
The best jwt.io alternative for reading tokens is AyeTab, a free set of developer tools whose JWT Debugger decodes in your browser and keeps the token on your device. jwt.io stays the better pick when you need to verify a signature or create a token, so many developers keep both.
Why people look for another option
jwt.io is the site most of us opened the first time we met a JSON Web Token. Presented by Auth0, it decodes, verifies and generates tokens, and its introduction page is still one of the clearer explanations of the format.
But most days the job is smaller. A request returns 401, you copy the token from the network tab, and you want to know three things: whose token is this, which API is it for, and has it expired. For that, a few things start to matter more than features:
- Speed. The fewer clicks between copy and answer, the better.
- Privacy. A live token is a credential, and you want it to stay on your machine.
- Closeness. A tool that is already open beats a bookmark you have to find.
What AyeTab does differently
AyeTab is a free Chrome extension that turns your new tab page into a developer toolbox, with the same tools on the web at app.ayetab.com. Its JWT Debugger is built around the quick read:
- Paste a token and it decodes as you type, into Header, Payload and Signature cards with copy buttons.
- A chip on the payload says "valid until" or "expired" with the UTC time, worked out from the
expclaim. - The token is decoded in the page and not uploaded to AyeTab's servers. There is no account, and it works offline once loaded.
- In the extension, smart paste spots a JWT and suggests the decoder, and Ctrl+K (Cmd+K on a Mac) jumps to any tool.
Head to head
| AyeTab JWT Debugger | jwt.io | |
|---|---|---|
| Decode header and payload | Yes | Yes |
| Shows expiry status | Yes, as a chip | Claims breakdown |
| Verify a signature | No | Yes, with a secret |
| Generate a token | No | Yes, encoder tab |
| Lives on your new tab | Yes, with the extension | No |
The table is the honest summary. AyeTab does less on purpose, and it does the common job faster.
A quick test shows the difference. Take a token from a request that just failed and paste it into each tool. On AyeTab the expiry chip answers the most common cause of a 401 before you have read a single claim. If the token is still valid, the aud and iss values in the payload card are the next place to look.
How to switch
Open the decoder on the web, or install the AyeTab extension for Chrome so the tool list is there every time you open a tab. The Base64 decoder and Unix time converter sit next to it, which helps when a token carries odd custom claims. There is a side panel too, if you would rather keep the page you are debugging in view.
Keep jwt.io for the moments you need a signature check or a test token, ideally with a test key. For everything else, AyeTab is the quicker daily habit.