---
title: "jwt.io alternative for decoding tokens in your browser"
description: "jwt.io decodes, verifies and generates JWTs. ToolSugar only decodes and shows times in UTC and local. See when each fits, and why ours skips signature checks."
canonical: https://toolsugar.com/alternatives/jwt-io-alternative
image: https://toolsugar.com/og.png
---

# A jwt.io alternative for reading JWTs

ToolSugar is our product. We are not affiliated with jwt.io. We checked its public pages on 2026-11-07, and its limits and prices can change.

ToolSugar's JWT Decoder is a jwt.io alternative for reading a token's header and payload, with iat, exp and nbf shown in UTC and local time. It does not verify signatures. jwt.io decodes, verifies and generates tokens, so use jwt.io when you need to check a signature.

## ToolSugar and jwt.io compared

| Feature | ToolSugar | jwt.io |
| --- | --- | --- |
| Decodes | Header and payload | Yes |
| Verifies signature | No. The signature is shown as text | Yes |
| Generates tokens | No | Yes |
| Where the token goes | Stays in your browser tab | Auth0 staff say decoding and verification happen locally in the browser |
| Time claims | iat, exp and nbf in UTC and your local time | See the site |
| Run by | ToolSugar | Auth0 |

## When jwt.io is the better pick

- You need to verify a signature. Ours cannot.
- You need to generate a test token.

## When ToolSugar is the better pick

- You only want to read the claims and the expiry time.
- You want other developer tools, such as a Base64 encoder or diff checker, on the same site.

## Questions

### Does ToolSugar's decoder prove a JWT is valid?

No. Decoding shows what the token claims. Only a signature check with the right key shows it was not altered, and our tool does not do that.

### Does jwt.io send my token to a server?

Auth0 staff say decoding and verification happen locally in the browser and the token is not sent to Auth0's servers.

## Try these tools

- [JWT Decoder](https://toolsugar.com/tools/jwt-decoder)

## Guides

- [JWT Decoder guide](https://toolsugar.com/blog/how-to-decode-a-jwt)

## Sources

- [jwt.io](https://www.jwt.io/)
- [Auth0 community thread on local decoding](https://community.auth0.com/t/feedback-mention-that-jwt-decoding-happens-fully-locally/198059)