Extension

Your half of the
Contact Protocol

When a site runs OpenGander, you're seeing the consent banner right now. With this extension, you get your own copy of everything it asks to collect. Same data, both sides, no surprises.

Chrome Web Store — Coming Soon Manual install now

What the extension does

Bilateral data sharing. Your browser. Your copy.

💡

Captures your copy. When a site asks to collect data through OpenGander, this extension gets the same request — and you keep a record.

🔒

Stays in your browser. Your data lives in IndexedDB on your machine. No servers, no sync, no tracking across sites.

📦

Export anytime. Download your data as JSON or OTLP (OpenTelemetry). It's yours to analyze, archive, or send elsewhere.

✅

No surprises. You see exactly what each site collects from you. Same record, both sides. Full transparency.

"The Contact Protocol"

Two-way data visibility. You and the site, on equal terms.

Three steps to sideload

While we wait for the Chrome Web Store listing, you can sideload it locally.

Step one

Download

Download the extension ZIP file below. Extract it to a folder on your computer. You'll have all the source files in one place.

Step two

Enable Developer Mode

Go to chrome://extensions in your address bar. Toggle the "Developer mode" switch in the top-right corner.

Step three

Load Unpacked

Click "Load unpacked" and select the extracted folder. The extension will appear in your toolbar with a green icon. You're done.

Need help? For detailed Chrome sideloading instructions, see Chrome's official guide.

Get the extension

Install from the Chrome Web Store in one click, or download the ZIP to sideload manually.

Chrome Web Store — Coming Soon

In the meantime, you can sideload it manually

Download ZIP for manual install

Have questions about the extension? [email protected]

How it works together

🌊

Site drops SDK

A website integrates OpenGander's SDK to collect and send consent banners and event data to their dashboard.

🔗

Extension listens

This extension intercepts the same data request in real-time. You get an identical copy in your browser's local storage.

💳

You stay in control

Both copies exist. The site has theirs, you have yours. Same record, no middleman, full transparency — that's the Contact Protocol.