# JWT Viewer & Decoder

> Finds, displays, decodes, and copies JWT tokens on the current page.

Canonical page: [https://chrome-stats.com/d/jwt-viewer-decoder](https://chrome-stats.com/d/jwt-viewer-decoder)

## Overview

- **ID:** `jwt-viewer-decoder`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** LOTARION
- **Category:** search-tools
- **Daily users:** 11
- **Weekly downloads:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-04-21
- **First published:** 2026-04-18
- **Size:** 102 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/jwt-viewer-decoder/)
- **Website:** [https://lotarion.com](https://lotarion.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/jwt-viewer-decoder/privacy/](https://addons.mozilla.org/firefox/addon/jwt-viewer-decoder/privacy/)

## Description

JWT Viewer & Decoder helps developers inspect JWT tokens available on the current website. It can detect JWTs from cookies, localStorage, and sessionStorage, display the raw token, decode the payload locally in the browser, and let you copy the token with one click.

Features:
- Detects JWT tokens on the active tab
- Reads token-like values from cookies, localStorage, and sessionStorage
- Decodes JWT payload locally
- Shows common claims such as sub, email, department or role, exp, and iat
- Highlights token expiration status
- Lets you copy the token quickly
- Includes a compact support section with donation link and QR

Privacy:
JWT Viewer & Decoder does not send token data to external servers. Token inspection and decoding happen locally inside the browser popup.

## Rankings

- #31,997 — Overall
- #164 — viewer

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `cookies`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/jwt-viewer-decoder)