docs/api/puppeteer.page.emulatenetworkconditions.md
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.
class Page {
abstract emulateNetworkConditions(
networkConditions: NetworkConditions | null,
): Promise<void>;
}
Parameter
</th><th>Type
</th><th>Description
</th></tr></thead> <tbody><tr><td>networkConditions
</td><td>NetworkConditions | null
</td><td>Passing null disables network condition emulation.
Returns:
Promise<void>
import {PredefinedNetworkConditions} from 'puppeteer';
const slow3G = PredefinedNetworkConditions['Slow 3G'];
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();