---
title: WebView ads
description: >-
  Register an app WebView with the Google Mobile Ads SDK for WebView API for
  Ads.
---
> ## Documentation Index
> Fetch the complete documentation index at: https://react-native-google-mobile-ads.dev/llms.txt
> Use this file to discover all available pages before exploring further.

When your app shows ads inside an in-app `WebView`, Google requires you to register that WebView with the Mobile Ads SDK so traffic is classified as **in-app** rather than mobile web. Correct classification affects CPM, targeting, and policy compliance for WebView monetization.

This module exposes `mobileAds().registerWebView(viewTag)` on both Android and iOS (classic GMA and Android Next-Gen). It does **not** depend on `react-native-webview` — pass a React Native view tag from any host that owns an `android.webkit.WebView` / `WKWebView`.

## Prerequisites

1. Call `await mobileAds().initialize()` before registering.
2. Obtain a numeric view tag after the WebView has mounted (for example from `findNodeHandle` on a ref, typically in `onLoadEnd`).

## Usage

```jsx
import React, { useRef } from 'react';
import { findNodeHandle } from 'react-native';
import { WebView } from 'react-native-webview';
import mobileAds from 'react-native-google-mobile-ads';

export function InAppBrowser({ uri }) {
  const webRef = useRef(null);

  return (
    <WebView
      ref={webRef}
      source={{ uri }}
      onLoadEnd={() => {
        const viewTag = findNodeHandle(webRef.current);
        if (viewTag == null) {
          return;
        }
        mobileAds()
          .registerWebView(viewTag)
          .catch(error => {
            console.warn('registerWebView failed', error);
          });
      }}
    />
  );
}
```

Register each WebView instance you use for in-app ad traffic. If the tagged view is a host wrapper (common with `react-native-webview`), the native bridge walks the subtree for the platform WebView.

## Errors

The promise rejects when:

- the view tag cannot be resolved (New Architecture / Bridgeless uses `UIManagerHelper` on Android and `RCTViewRegistry` on iOS — do not call the legacy `UIManagerModule` yourself), or
- no `WebView` / `WKWebView` is found under that tag.

## Platform notes

| Platform                              | SDK API                                          |
| ------------------------------------- | ------------------------------------------------ |
| Android classic (`play-services-ads`) | `MobileAds.registerWebView(WebView)`             |
| Android Next-Gen (`ads-mobile-sdk`)   | `MobileAds.registerWebView(WebView)`             |
| iOS (`Google-Mobile-Ads-SDK`)         | `[GADMobileAds.sharedInstance registerWebView:]` |