Page.emulateNetworkConditions() method
This does not affect WebSockets and WebRTC PeerConnections (see https://crbug.com/563644). To set the page offline, you can use Page.setOfflineMode().
A list of predefined network conditions can be used by importing PredefinedNetworkConditions.
Signature
class Page {
abstract emulateNetworkConditions(
networkConditions: NetworkConditions | null
): Promise<void>;
}
Parameters
Parameter | Type | Description |
---|---|---|
networkConditions | NetworkConditions | null | Passing |
Returns:
Promise<void>
Example
import {PredefinedNetworkConditions} from 'puppeteer';
const slow3G = PredefinedNetworkConditions['Slow 3G'];
(async () => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.emulateNetworkConditions(slow3G);
await page.goto('https://www.google.com');
// other actions...
await browser.close();
})();