View decoded JWTs from storage with deep inspection

Latest Version

Version
1.01
Update
November 12, 2024
Size
14.26KiB
Developer
Category
Users
10
Rating
5 ★
Manifest Version
3
Web Store Status
Languages Support
English
See more
Permissions
ActiveTab
Scripting
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JWT Viewer Extension

Title: JWT Viewer - Decode & Inspect Storage Tokens

Description:
JWT Viewer is a lightweight and secure tool for developers to easily inspect JSON Web Tokens (JWTs) stored in localStorage and sessionStorage.

Key Features:
- Automatically detects JWTs in both localStorage and sessionStorage
- Decodes and displays JWT header and payload in a clean, formatted view
- One-click copy functionality for entire tokens
- Expandable/collapsible token sections for better organization
- Real-time token inspection with refresh capability
- Zero external dependencies - all decoding happens locally
- Supports nested JSON objects inspection

Perfect for:
- Web Developers
- Security Engineers
- API Testing
- Debugging Authentication
- Token Inspection during Development

Privacy & Security:
- Works entirely offline
- No data collection or external communications
- Token decoding happens locally in your browser
- No sensitive data leaves your machine

How to use:
1. Click the extension icon on any webpage
2. View automatically detected JWTs from storage
3. Expand/collapse sections to focus on specific tokens
4. Copy tokens with a single click
5. Refresh to check for new tokens

Feedback and feature requests welcome!

Tags: JWT, JSON Web Token, Developer Tools, Web Development, Authentication, Debug
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 3, "name": "JWT Viewer", "version": "1.01", "description": "View decoded JWTs from storage with deep inspection", "permissions": [ "activeTab", "scripting" ], "action": { "default_icon": { "16": "images/icon16.png", "48": "images/icon48.png", "128": "images/icon128.png" }, "default_popup": "popup.html" }, "content_security_policy": { "extension_pages": "script-src 'self'; object-src 'self'" }}
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How to download and manually install JWT Viewer extension for Chrome

Looking for a way to install JWT Viewer extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install JWT Viewer extensions manually, this article outlines two simple methods to effortlessly install JWT Viewer extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download JWT Viewer extension and manually install through Drag &Drop

If you ever need to manually install a JWT Viewer extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the JWT Viewer Extension by clicking the "Download CRX" button on the website.

Look for the JWT Viewer extension you wish to install. Go to the website and download the JWT Viewer extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for JWT Viewer extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the JWT Viewer extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download JWT Viewer extension for Chrome and install in Developer Mode

This is another method to install JWT Viewer extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the JWT Viewer extension file

Select and download the JWT Viewer extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the JWT Viewer extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your JWT Viewer extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the JWT Viewer extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install JWT Viewer extension in 2 ways. We hope this guide proves helpful.

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