puppeteer/website/versioned_docs/version-9.1.1/puppeteer.page.emulate.md

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Page.emulate() method

Emulates given device metrics and user agent. This method is a shortcut for calling two methods: Page.setUserAgent() and Page.setViewport() To aid emulation, Puppeteer provides a list of device descriptors that can be obtained via the Puppeteer.devices page.emulate will resize the page. A lot of websites don't expect phones to change size, so you should emulate before navigating to the page.

Signature:

emulate(options: {
        viewport: Viewport;
        userAgent: string;
    }): Promise<void>;

Parameters

Parameter	Type	Description
options	{ viewport: Viewport; userAgent: string; }

Returns:

Promise<void>

Remarks

List of all available devices is available in the source code: src/common/DeviceDescriptors.ts.

Example

const puppeteer = require('puppeteer');
const iPhone = puppeteer.devices['iPhone 6'];
(async () => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.emulate(iPhone);
await page.goto('https://www.google.com');
// other actions...
await browser.close();
})();