<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [puppeteer](./puppeteer.md) > [Page](./puppeteer.page.md) > [emulateNetworkConditions](./puppeteer.page.emulatenetworkconditions.md) ## Page.emulateNetworkConditions() method <b>Signature:</b> ```typescript emulateNetworkConditions(networkConditions: NetworkConditions | null): Promise<void>; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | networkConditions | [NetworkConditions](./puppeteer.networkconditions.md) \| null | Passing <code>null</code> disables network condition emulation. | <b>Returns:</b> Promise<void> ## Remarks NOTE: This does not affect WebSockets and WebRTC PeerConnections (see https://crbug.com/563644). To set the page offline, you can use \[page.setOfflineMode(enabled)\](\#pagesetofflinemodeenabled). ## Example ```js const puppeteer = require('puppeteer'); const slow3G = puppeteer.networkConditions['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(); })(); ```