Chrome Extension Source Code Downloader

See what's running in your browser

Download the source code of any Chrome extension. Review it yourself or use AI to check for privacy and security issues.

Paste a Chrome Web Store URL or just the extension ID (e.g., )

Why Inspect Extension Source Code?

Check for Malware & Spyware

Review the actual code running in your browser. Detect suspicious network requests, data collection, or malicious scripts before they compromise your security.

Verify Privacy Practices

See exactly what data an extension accesses. Check if it reads your browsing history, form data, or sends information to third-party servers.

Use AI for Security Analysis

Download the source code and upload it to ChatGPT, Claude, or other AI assistants for automated security review and vulnerability detection.

Frequently Asked Questions

How do I view the source code of a Chrome extension? ▼

Paste the Chrome Web Store URL or extension ID into the input field above and click Download. The source code will be extracted and displayed in our built-in code viewer, or you can download it as a ZIP file.

Where do I find a Chrome extension's ID? ▼

The extension ID is the 32-character string at the end of the Chrome Web Store URL. For example, in "chrome.google.com/webstore/detail/extension-name/abcdefghijklmnopqrstuvwxyz123456", the ID is "abcdefghijklmnopqrstuvwxyz123456".

Is this tool safe to use? ▼

Yes. We only download publicly available source code from the Chrome Web Store. No data is stored on our servers, and all processing happens in your browser. The extension code is never executed.

Can I check if an extension has malware? ▼

Yes. Download the source code and review it manually, or upload it to an AI assistant like ChatGPT or Claude for automated analysis. Look for suspicious patterns like obfuscated code, unexpected network requests, or access to sensitive browser APIs.