Earn A2C Crypto on Any Website, Automatically
The Add2Coin Chrome extension detects earn.js on any website you visit and earns A2C cryptocurrency tokens on your behalf — without any extra steps. Your live balance, today's earnings, and referral tools, always one click away.
Everything in the Extension
Eleven features, all configurable. Show exactly what you want and hide what you don't.
How It Works
Why the Extension Is Different from earn.js
earn.js is embedded by website owners into their sites. It rewards the site owner and any registered visitor who watches ads on that specific site.
The Chrome extension works from the viewer's side — it runs inside your browser and detects earn.js on any website you visit, without the website needing to do anything special for the extension specifically. This means:
- You earn on any Add2Coin site automatically, without needing to remember to register on each one
- Your balance, streak, and stats are always visible in one place regardless of which site you're on
- You can generate referral links for any page you're visiting in one click, turning any Add2Coin site into a referral opportunity
- The extension works across all your browsing — Chrome, Edge, Brave, and Opera all support Chrome extensions
Patent Pending GB2606991.4: The Add2Coin system — including the browser extension as an implementation of client-side code running in a user agent without requiring platform modification — is protected by pending UK patent application GB2606991.4, filed 28 March 2026. This covers the mechanism of detecting advertising engagement and distributing rewards across a multi-level attribution chain in any browser-based environment. PCT international filing planned before March 2027.
Privacy & Permissions
The extension requests only the permissions it actively uses. Here is exactly what each permission does:
| Permission | Why It Is Needed |
|---|---|
| storage | Saves your display preferences (which panels are visible) locally in your browser. No data is sent anywhere. |
| cookies | Checks for your existing Add2Coin session cookie on add2coin.com only. This is how the extension knows whether you are logged in without requiring a separate login. No cookies from any other site are ever read. |
| tabs | Shows the earning status (green badge) per tab, so you can see which specific tab is currently on an earning site. |
| activeTab | Reads the current page to detect whether earn.js is embedded on it. |
| alarms | Schedules a background refresh every 5 minutes to keep your balance display current. |
The extension never reads your browsing history, captures keystrokes, accesses passwords, reads page content, or communicates with any server other than add2coin.com. It only checks whether earn.js is present on a page and fetches your balance from the Add2Coin API using your existing session. Full privacy policy: add2coin.com/privacy
Frequently Asked Questions
Do I need an Add2Coin account to use the extension?
You need a free Add2Coin account to earn tokens and see your balance. The extension can be installed without an account but will show a login prompt until you sign in at add2coin.com.
Does the extension slow down my browser?
No. The extension runs as a lightweight background service worker. It only activates when it detects earn.js on a page, and its background refresh uses Chrome's built-in alarms API which has negligible performance impact.
Will it work on YouTube?
The extension currently detects earn.js on any website. YouTube integration — where the extension can earn rewards for watching YouTube ads — is planned as a future feature as the platform expands. The pending patent GB2606991.4 covers this use case.
Does it work on Edge, Brave, or Opera?
Yes. All four browsers support Chrome extensions from the Chrome Web Store. Install it exactly the same way in Edge, Brave, or Opera as you would in Chrome.
Is this affiliated with Google?
No. Add2Coin is operated by AI Administrator Limited, a company registered in England and Wales (Companies House: 16262184). The extension is listed on the Chrome Web Store but is not made by or affiliated with Google.
Start Earning on Every Add2Coin Site You Visit
Free to install. No subscription. No in-app purchases. Your A2C tokens go straight to your account.
➕ Add to Chrome — Free