JSController – JavaScript Execution Control

Inspect JavaScript resources on websites and choose which scripts to allow or block using a side panel.

JSController – JavaScript Execution Control JSController helps users inspect and manage JavaScript resources loaded by websites directly from Chrome's side panel. Key Features: • Automatic Script Scanning Automatically scan JavaScript resources on the active webpage when opening the side panel. • Internal and External JavaScript Detection Identify JavaScript files loaded from the current website and external domains. • Block and Unblock JavaScript Select individual JavaScript resources to block or unblock. Blocking rules are applied to matching network requests. • Persistent Blocking Rules Save blocked JavaScript settings locally using Chrome Storage. • Import and Export Block Lists Export your blocked JavaScript list to a JSON Lines (.jsonl) file or import an existing list to restore your settings. • Easy-to-Use Side Panel View internal, external, and blocked JavaScript resources in a simple interface. How to Use: 1. Open a website in Chrome. 2. Click the JSController extension icon. 3. The side panel automatically scans the active webpage. 4. Review the detected JavaScript resources. 5. Click Block to prevent matching scripts from loading on subsequent page loads. 6. Click Unblock to remove a blocking rule. 7. Use Import or Export to manage your blocked JavaScript list. JSController is designed for developers, testers, and users who want greater control over JavaScript resources loaded by websites. Note: Blocking JavaScript may affect website functionality. Some dynamically executed or embedded scripts may not appear in the scan results.