Tool untuk encode dan decode JWT secara lokal di browser
JWT Encoder/Decoder Extension
Overview:
A powerful developer tool for inspecting, validating, and manipulating JSON Web Tokens directly in your browser. This extension provides complete JWT handling capabilities with robust security features.
Key Features:
Instant Decoding: Break down JWT tokens into header, payload, and signature components
Smart Validation: Automatic checks for expiration, validity periods, and issuance dates
Realtime Encoding: Generate new tokens with multiple algorithm support (HS256/384/512, RS256/384/512, ES256/384/512,none)
Signature Verification: Validate token signatures against provided keys
Secure Handling: All processing occurs locally - no token data leaves your browser
Developer-Friendly: Clean interface with syntax-highlighted JSON views
Technical Specifications:
Supports all standard JWT algorithms (HMAC, RSA, ECDSA)
Clipboard integration for easy token pasting/copying
Comprehensive token validation including:
Expiration (exp)
Not Before (nbf)
Issued At (iat)
Manifest v3 compliant
Zero external dependencies (except jsrsasign library bundled locally)
Security Notice:
This tool is designed for development purposes only. We strongly recommend:
Never using production secrets
Always working in secure environments
Verifying tokens contain no sensitive data before processing
Ideal For:
API developers
Security researchers
Quality assurance testers
Authentication system debuggers
Source Manifest.json
How to download and manually install JWT Encoder/Decoder extension for Chrome
Looking for a way to install JWT Encoder/Decoder 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 Encoder/Decoder extensions manually, this article outlines two simple methods to effortlessly install JWT Encoder/Decoder extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.
Method 1: Download JWT Encoder/Decoder extension and manually install through Drag &Drop
If you ever need to manually install a JWT Encoder/Decoder 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 Encoder/Decoder Extension by clicking the "Download CRX" button on the website.
Look for the JWT Encoder/Decoder extension you wish to install. Go to the website and download the JWT Encoder/Decoder extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for JWT Encoder/Decoder 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 Encoder/Decoder 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 Encoder/Decoder extension for Chrome and install in Developer Mode
This is another method to install JWT Encoder/Decoder 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 Encoder/Decoder extension file
Select and download the JWT Encoder/Decoder 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 Encoder/Decoder 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 Encoder/Decoder 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 Encoder/Decoder 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 Encoder/Decoder extension in 2 ways. We hope this guide proves helpful.
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