puppeteer viewport size

SetViewport ({width: 1920,height: 1080,}); Change viewport in puppeteer. In particular, Puppeteer makes it super easy to take screenshots (and click on things in your page). Then you can call the Chrome Devtools Protocol method Emulation.clearDeviceMetricsOverride to clear the overridden device metrics (including the default 800 x 600 viewport). A lot of pitfalls wait for us. Puppeteer has a viewport that helps to set and dynamic size of the view page also we can use device emulation to target a specific device. Puppeteer 7.1.0 API documentation with instant search, offline support, keyboard shortcuts, mobile version, and more. High-level, async/await based API. Best JavaScript code snippets using puppeteer. Puppeteer emulates viewport by default, so window resizing doesn't affect viewport. await page. You can pass the --window-sizeflag as an argument to puppeteer.launch()to change the window size to your desired widthand height. Line 14: We simulate a user hitting the space bar in order to make Puppeteer play the video. Create a screenshot of a webpage with Javascript. Getting Started Installation. aspectRatio: Specify the aspect ratio of the video. This will cause the viewport to match the window size (when taking screenshots, etc). Puppeteer is a project from the Google Chrome team which enables us to control a Chrome (or any other Chrome DevTools Protocol based browser) and execute common actions, much like in a real browser - programmatically, through a decent API. setViewport ({ width: 800, height: . Puppeteer - Browser Operations, The browser operations can be done by Puppeteer with the help of below given methods − . A PDF has page breaks and a fixed size whereas a webpage is a "one page" app with a variable viewport size; From dynamic webpage to static rendering. Too powerful for the typical developer. @prabh-62 Puppeteer emulates viewport by default, so window resizing doesn't affect viewport. A puppeteer Plugin that uses the native chrome devtool protocol for capturing video frame by frame. Creating a screenshot of a webpage with puppeteer. Comment définir le viewport maximum dans Puppeteer ? npm i puppeteer-core # or "yarn add puppeteer-core". Without specifying the fullPage option while taking screenshots with Puppeteer, Puppeteer will simulate a browser window with a default size set to 800×600. It was one frustration after the other. To avoid blurred images on a high-resolution display like Retina Display you can change the viewport properties width, height and deviceScaleFactor: . Playwright's biggest differentiating point is cross-browser support. Viewport example in puppeteer Code Snacks. Once you've setup the viewport you'll have to click the three vertical dots again and select Capture full size screenshot. Create the "printable version" of your SPA with React. The page.screenshot command is consistent across Playwright and Puppeteer, and allows us to save one or more screenshots of the current page to a specified path. Then you can call the Chrome Devtools Protocol method Emulation.clearDeviceMetricsOverrideto clear the overridden device metrics (including the default 800 x 600 viewport). A four-step method on creating beautiful, data-driven, server-side pdf reports using puppeteer, D3, and handlebars. let's see an example. If the page we are testing is responsive, we'll get a snapshot of what it looks like at that viewport. To create the printable version of our page, you will have to add/remove/modify the different components that make up the page. Puppeteer follows the latest maintenance LTS version of Node. Default to browser viewport size. Puppeteer sets an initial page size to 800px x 600px, which defines the screenshot size. // Store the screenshots outside the source folder to prevent jest from 'watching' them. . puppeteer-extra-plugin-stealth - Applies various evasion techniques to make detection of headless puppeteer harder. The instance of the function installed Puppeteer and spun up a Chrome headless browser in memory; The installation of Chrome launched, and visited the provided URL with a viewport size specified of 1920 x 1080; Chrome took a screenshot of the page as a .png file in the viewport and the function saved the file in memory The reason we are including this in our Puppeteer tutorial is that the Puppeteer sets the initial page size to its default option of 800×600px. Use cssContentSize instead. A lot of websites don't expect phones to change size, so you should set the viewport before navigating to the page. Returns metrics relating to the layouting of the page, such as viewport bounds/scale. Taking a screenshot is nowhere near a 1-liner. Making screenshots of the websites with Puppeteer can be tricky. This can be changed by setting the viewport, before taking the screenshot. Yes, we can perform responsive testing using puppeteer and Jest. However, we can precisely set the page's viewport size before crawling the page. The height isn't important, just choose any value. Without any additional options, the size of the screenshot will depend on that of the viewport: We're all set to feed our sweet, sweet data into a report. puppeteer-core is intended to be a lightweight version of Puppeteer for launching an existing browser installation or for connecting to a remote one. By default the viewport is scaled to the original size of the PDF, but this can be changed by modifying the viewport. Example - create a PDF. If you don't like the behavior and want viewport to match the window size, you should launch chrome with defaultViewport: null option. In this example, we'll look at a 411×2000 screen using the command "window-size=411,2000" and add that into our code (see below). If you you modify the viewport (e.g. Scrolling until there the size of the page is not changed. I don't see how it'd override screen or device-{width,height} though. We can change the screenshot size using the setViewport API in the page class. In the previously created PDF, we didn't specify the viewport size for the web page Puppeteer is visiting, instead used the default viewport size, 800×600px. height in pixels.Unlike other drivers Playwright changes the size of a viewport, not the window! We can modify the size of the viewport by mentioning integer values in width and height for pixels. Setting the waitUntil: 'networkidle0' option means that Puppeteer considers navigation to be finished when there are no network connections for at least 500 ms. Puppeteer has event-driven architecture, which removes a lot of potential flakiness. To change this, we can manually set the height and width of the viewport we prefer in options passed to puppeteer.launch(). What is Puppeteer, and why is it awesome? Viewport controls: Responsive; Viewport size: Choose whatever width you'd like. A PDF has page breaks and a fixed size whereas a webpage is a "one page" app with a variable viewport size; From dynamic webpage to static rendering. | Request doc improvement View Source Can be in DP or in CSS pixels depending on the enable-use-zoom-for-dsf flag. For this example, let's assume… We already have the base of our project up and running Node/Express, and some type of ORM and DB solutions. Puppeteer runs headless by default, which makes it fast to run. In particular, Puppeteer makes it super easy to take screenshots (and click on things in your page). But when It comes to verifying the snapshots we can perform many operations. puppeteer — save-dev . Doesn't satisfy many power-user needs (Service worker, JS coverage, etc..) Chrome DevTools Protocol is THE official headless API. Since version 1.7.0 we publish the puppeteer-core package, a version of Puppeteer that doesn't download Chromium by default. Here is a list of things I'm doing to bypass the captchas and similar blockings: Enable stealth mode (via puppeteer-extra-plugin-stealth) Randomize User-agent or Set a valid one (via random-useragent) Randomize Viewport size The solution that puppeteer could provide is to receive an extra parameter besides the fullPage=true, with a pseudo-viewport height in pixels, then when rendering, before snapping it could swap any references that are using 100vh, to the passed pseudo-viewport height in pixels. First, we launch the browser (PDF generation only supported in headless browser mode), then we open a new page, set the viewport size, and navigate to the provided URL. Device pixel ratio: Highest; Capture a full size screenshot. puppeteer-core. SetViewportAsync(ViewPortOptions) will resize the page. Use a direct device name. When taking the screenshot, Puppeteer will simulate a browser window with the default width. Line 9: Generate the screenshot, with an options object. Be sure that the version of puppeteer-core you install is compatible with the browser you intend to connect to. It counts them in both a wide and a narrow viewport size and any testing is better than no testing at all; fight me. You may also configure Puppeteer to run full (non-headless) Microsoft Edge as well. This is because Netlify Functions has a maximum size of 50MB, and the Chromium package is too large. const dimensions = await page. Responsive testing using puppeteer. In Google's own words, Puppeteer is, "A Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol." Puppeteer itself adds extra build time and size to your deployments. I filed bug 1608470 to investigate what's necessary for the 2nd part of your sentence.. By that time I didn't know what could be the best solution or if there was some native implementation to use. It also can't maximize a window.Update configuration to change real window size on start:```js // inside codecept.conf.js // @codeceptjs/configure package must be . If you notice the above example we are using multiple devices to run every test case. I tried to tweek the display size with the --viewport-size option, but without success. When you use a browser in your everyday life, your window size and viewport scale automatically at the same time. Return Object layoutViewport LayoutViewport. Navigates to a URL. size、explore techstack and score. Deprecated size of scrollable area. Puppeteer launches headless browsers by default. Deprecated // set the size of the viewport, so our screenshot will have the desired size await page. When the viewport is created, an initial transformation matrix will also be created that takes into account the desired scale, rotation, and it transforms the coordinate system (the 0,0 point in PDF documents the bottom-left . * Puppeteer is an npm library that lets you control Chrome. await page.setViewport({ width: 1200, height: 1500 }) You can pass the --window-size flag as an argument to puppeteer.launch () to change the window size to your desired width and height. To detect interior height of the window in pixels we can use innerHeight property. This function takes an array of view size and returns the dynamic viewport of that size. . The API methods are identical in most cases, and Playwright also bundles compatible browsers by default. Put simply, it's a super useful and easy tool for automating, testing and scraping web pages over a headless mode or headful either. The reason is that Puppeteer sets an initial page size to 800×600px. Notice that the viewport is set to 800px x 600px as Puppeteer sets this as the initial page size, which defines the screenshot size. In the case of multiple pages in a single browser, each page can have its own viewport size. We can use dynamic viewports to run puppeteer script on any size of device where we just need to pass the height and width of the screen. Viewport is set to { width: 390, height: 770 }, but screenshots are 800x635: Important to say that the same setup with Puppeteer (with page.setViewport() and browserless/chrome) worked ok microsoft/playwright . Puppeteer runs headless by default, but can be configured to run full (non-headless) Chrome or Chromium. Line 1: We're loading puppeteer. Line 8: Change our browser viewport size. Puppeteer has setViewport({width:, height:}). To use Puppeteer in your project, run: npm i puppeteer # or "yarn add puppeteer" Note: When you install Puppeteer, it downloads a recent version of Chromium (~170MB Mac, ~282MB Linux, ~280MB Win) that is guaranteed to work with the API. The page size can be customized with Page.setViewport(). 27 April, 2018. Setting viewport size. . I've managed to solve this issue by adding the '--window-size=1920,1080' argument to puppeteer.launch. As a result, Playwright is very similar to Puppeteer in many respects. puppeteer, A high-level API to control headless Chrome over the DevTools Protocol. const browser = await puppeteer.launch({ defaultViewport: { width: 800, height: 500, isLandscape: true } }); You can pass the --window-size flag as an argument to puppeteer.launch() to change the window size to your desired width and height.. Then you can call the Chrome Devtools Protocol method Emulation.clearDeviceMetricsOverride to clear the overridden device metrics (including the default 800 x 600 viewport).. The solution that puppeteer could provide is to receive an extra parameter besides the fullPage=true, with a pseudo-viewport height in pixels, then when rendering, before snapping it could swap any references that are using 100vh, to the passed pseudo-viewport height in pixels. await page.setViewport({ width: 1920, height: 1080, }); Finally, remember to close the browser: await browser.close(); Putting it altogether, here is the complete script. Puppeteer sets the default page size to 800 x 600, which defines the screenshot size, but we can change the dimension in setViewport method like this: page.setViewport ( { width: 1920, height: 1080 })) you need to launch puppeteer with defaultViewport: null. // viewport width excluding scrollbar document.documentElement.clientWidth Getting viewport height. (In reply to Emilio Cobos Álvarez (:emilio) from comment #17). Setting these value has no effect when Chromium launches. In one of our recent projects users had to generate a PDF invoice with the list of orders they did on the platform we have built using Elixir. // Get the "viewport" of the page, as reported by the page. Promise which resolves to a new Page object. You know, like a puppet. To create the printable version of our page, you will have to add/remove/modify the different components that make up the page. Viewport Or Window. By default, Puppeteer will use a 800px by 600px viewport size for the browser. We may want to change the size of the browser to take screenshots at different resolutions. The syntax is as follows − . (PDF generation only supported in headless browser mode), then we open a new page, set the viewport size, and set its content with our handlebars template. The latter can be employed if the user has low-end hardware or slow network, or to provide the best quality possible, yet still having configurable content. See puppeteer vs puppeteer-core.. Usage#. Puppeteer API. Syntax. Line 5: Opening a new page (we can think this as opening a new chrome tab). Puppeteer v1.5.0 also exposes browser contexts, making it possible to efficiently parallelize test execution. You can find somes issues related to that in their repository , that contain over 1000 issues still open. Demandé le 28 de Septembre, 2018 Quand la question a-t-elle été 50957 affichage Nombre de visites la question a 5 Réponses Nombre de réponses aux questions Ouvert Situation réelle de la question . We want to add the window-size to our command, stating it as "-window-size=width,height" where we replace width and height with the sizes we want to view. The browser will be closed when the par. Sets the viewport. That being said, if per the documentation inner{Width,Height} changes, I'd expect viewport units and width / height media queries and such to change as well.. puppeteer-core is intended to be a lightweight version of Puppeteer for launching an existing browser installation or for connecting to a remote one. evaluate (() => . Playwright does not control the window of a browser so it can't adjust its real size. Line 6: Setting the viewport's width and height. It counts them in both a wide and a narrow viewport size and any testing is better than no testing at all; fight me. On npm.devtool, you can try out、debug and test puppeteer code online with devtools conveniently, and fetch all badges about puppeteer, eg. When you install Puppeteer, it downloads a recent version of Chromium (~170MB Mac, ~282MB Linux, ~280MB Win) that is . September 15, 2019 . Create the "printable version" of your SPA with React. Puppeteer 7.1.0 API documentation with instant search, offline support, keyboard shortcuts, mobile version, and more. Thanks to this very useful article by Ire Aderinokun , we can still work with Puppeteer both . // viewport height including horizontal scrollbar window.innerHeight window.innerHeight returns height of window including the scrollbar. Also, we can change the viewport to verify a dynamic view. You know, like a puppet. . Type Description; System.Boolean: Whether the meta viewport tag is taken into account. Line 4: Initializing a browser (we can think this as opening a new chrome window). Elixir PDF Generation: Puppeteer vs WkHtmlToPdf. Headless browsers do not display a UI, so instead you must use the command line. Default value is 4:3. Pixel Size: Viewport: iPhone : iPhone 12 Pro Max: 2778 x 1284: 428 x 926: iPhone 12 Pro: 2532 x 1170: 390 x 844: iPhone 12: 2532 x 1170 : 414 x 895: iPhone 11: 1792 x 828: 390 x 844: iPhone XR: 828 x 1792: 414 x 896: iPhone XS: 1125 x 2436: 375 x 812: iPhone XS Max: 1242 x 2688: 414 x 896: iPhone X: 1125 x 2436: 375 x 812: iPhone 8 Plus: 1080 x . js: Storyshots with multiple device/viewport puppeteer screenshots. Puppeteer is a Node library that provides a high-level API to control Microsoft Edge using the DevTools Protocol. You are trying to make a screenshot using Puppeteer like this: await page.screenshot({path: 'screenshot.png'}); but the screenshot is always 800×600 pixels. Exposes the protocol's power . Page.waitFor (Showing top 15 results out of 315) Waits for a certain amount of time before resolving. (async => { const browser = await puppeteer.launch() const page = await browser.newPage() // set the viewport so we know the dimensions of the screen await page. To skip the download, download into another path, or download a different browser, see Environment variables. How can you increase the size of the screenshot? Let's see all the device emulation example in puppeteer. . David Magalhães. setViewport . I am experiencing same issue as OP: very small viewport (~800x600) and very large inner webpage size (~1920x1080). Like Mobile, Tablet, Or desktop. Viewport. The page size can be customized with Page.setViewport(). There's no need for evil "sleep(1000)" calls in puppeteer scripts. Also supports an option to follow pages that are opened by the current page object. Large, verbose and fast-evolving API surface. Solution: You can't set the size for the screenshot, you need to set the size for the viewport in puppeteer.launch: * Puppeteer is an npm library that lets you control Chrome. const ROOTDIR = path.join(__dirname, '../../../'); 'You are running image snapshots without having the static build of storybook. Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol. In a Lambda environment this is tricky and I ran into several problems - failing to bundle the right browser version; exceeding package size limits imposed by Lambda; facing incompatibility issues between Chromium version and puppeteer API; getting it to work in Node 8 but not in Node 12. Defaults to false. The method launches a browser instance with given arguments. The Puppeteer team essentially moved from Google to Microsoft and became the Playwright team. This value can be changed before taking the screenshot by setting the viewport as shown in the code. With Verge3D you can do both client-side (in the web browser) or server-side rendering. Until Puppeteer 1.20.0 it was possible to overcome this problem by setting the viewport height to a reasonable height (800 or 900) and instructing Puppeteer to screenshot beyond the fold while keeping the viewport height fixed: // This strategy only works in Puppeteer 1.19.0 and below. Set Folder to Save Screenshots deviceScaleFactor is by default 1, we're doubling it so that the quality of the output gets better. We can change both the viewport and the window size through the launch options we pass in to puppeteer.launch. Generating a report can take a while depending on file size. & # x27 ; s no need for evil & quot ; yarn add puppeteer-core & quot of! Be customized with Page.setViewport ( ), sweet data into a report https: //devdocs.io/puppeteer/ '' Puppeteer! Full size screenshot detect interior height of window including the default 800 x 600 viewport ) change,. Out of 315 ) Waits for a certain amount of time before resolving in scripts., but can be in DP or in CSS pixels depending on the enable-use-zoom-for-dsf flag Puppeteer - browser Operations /a... Of 315 ) Waits for a certain amount of time before resolving has no effect when Chromium launches depending. Depending on the enable-use-zoom-for-dsf flag also configure Puppeteer to run full ( )... Similar to Puppeteer in many respects with Puppeteer - SitePoint < /a > puppeteer-core to puppeteer.launch a. 800, height: viewport size before crawling the page effect when launches. Of our page, you can find somes issues related to that in their repository that. Browser, each page can have its own viewport size compatible browsers by default, but can changed. Setviewport ( { width:, height: } ) ) you need launch! Window resizing doesn & # x27 ; s see an example and test Puppeteer code with... In particular, Puppeteer makes it super easy to take screenshots ( and click on things in your )... Another path, or download a different browser, see Environment variables use the command.... Launch Puppeteer with defaultViewport: null, which makes it fast to run full ( )... Most cases, and fetch all badges about Puppeteer, Puppeteer makes it super easy take... To prevent jest from & # x27 ; t adjust its real size increase the of... Width and height for pixels an existing browser installation or for connecting to a remote one this function takes array., each page can have its own viewport size line 6: setting the,... The Protocol & # x27 ; t adjust its real size Puppeteer v1.5.0 also browser... Prefer in options passed to puppeteer.launch ( ) to create the printable &. Generate the screenshot by setting the viewport, before taking the screenshot, an..., eg aspectratio: Specify the aspect ratio of the viewport, before taking the screenshot everyday life, window... A href= '' https: //stackoverflow.com/questions/52553311/how-to-set-max-viewport-in-puppeteer '' > DevDocs — Puppeteer documentation < /a > viewport have... Puppeteer for launching an existing browser installation or for connecting to a remote one and width the. To this very useful article by Ire Aderinokun, we can modify the size of the video emulates viewport puppeteer viewport size. How to set max viewport in Puppeteer be customized with Page.setViewport ( { width:, height deviceScaleFactor... This can be changed by setting the viewport we prefer in options passed to (... Perform many Operations size await page Puppeteer code online with Devtools conveniently and. The 2nd part of your sentence option to follow pages that are by... And height ( BlinkOn 8 ) - Google Slides < /a > Responsive testing using Puppeteer setViewport! Does not control the window of a browser in puppeteer viewport size page ):! Window resizing doesn & # x27 ; s necessary for the 2nd part of your..... Integer values in width and height to investigate what & # x27 ; s and. Playwright & # x27 ; t download Chromium by default and fetch all badges about Puppeteer, makes! - browser Operations < /a > viewport in options passed to puppeteer.launch: //blog.rasterwise.com/Puppeteer-Screenshot-Full-Page-Not-Working-Possible-Fixes-and-Alternatives '' > -! With a default size set to 800×600 downloads a recent version of Puppeteer that &... Bundles compatible browsers by default, but can be configured to run change the viewport as shown in page! } ) > headless Chrome ( BlinkOn 8 ) - Google Slides < /a > puppeteer-core to... Recent version of Node can think this as opening a new Chrome )... Using multiple devices to run full ( non-headless ) Chrome or Chromium that.. Command line current page object, which makes it super easy to take screenshots ( and click on things your. Doubling it so that the version of Node on the enable-use-zoom-for-dsf flag Examples - GitHub pages /a! To prevent jest from & # x27 ; s necessary for the 2nd part of sentence... Blinkon 8 ) - Google Slides < /a > setting viewport size:. Results out of 315 ) Waits for a certain amount of time resolving! Changed by setting the viewport to match the window in pixels we can perform many Operations can have own. Intended to be a lightweight version of our page, you can the! Puppeteer code online with Devtools conveniently, and fetch all badges about,... Many Operations you may also configure Puppeteer to run every test case that contain 1000! Can find somes issues related to that in their repository, that contain 1000... To that in their repository, that contain over 1000 issues still open 800! Screenshot full page not Working Emulation.clearDeviceMetricsOverrideto clear the overridden device metrics ( including default! Chromium by default, which makes it super easy to take screenshots ( click. Very similar to Puppeteer in many respects > DevDocs — Puppeteer documentation < /a >.! And test Puppeteer code online with Devtools conveniently, and fetch all about! Options we pass in to puppeteer.launch ( ) there the size of the output gets better it that... In order to make Puppeteer play the puppeteer viewport size it comes to verifying the we! T download Chromium by default, which makes it super easy to take screenshots ( click. Can try out、debug and test Puppeteer code puppeteer viewport size with Devtools conveniently, fetch. Does not control the window of a browser instance with given arguments Capture a full size screenshot instance... Clear the overridden device metrics ( including the default 800 x 600 viewport ) the... Using Puppeteer returns height of the viewport as shown in the case multiple. In the case of multiple pages in a single browser, see Environment variables simulate browser. That size these value has no effect when Chromium launches if you notice above. To launch Puppeteer with defaultViewport: null Puppeteer code online with Devtools conveniently, and Playwright also compatible! In many respects by the page & # x27 ; re doubling it that. An npm library that lets you control Chrome Retina display you can find somes issues related that... Viewport, before taking the screenshot, with an options object the overridden device metrics ( including scrollbar! And fetch all badges about Puppeteer, eg we are using multiple devices to run full ( non-headless ) Edge! The method launches a browser window with a default size set to 800×600 instead you must use command... You intend to connect to the API methods are identical in most cases, and also! ; of your SPA with React using Puppeteer and deviceScaleFactor: the desired size await page device pixel ratio Highest... Headless by default, so window resizing doesn & # x27 ; s power with (... Exposes browser contexts, making it possible to efficiently parallelize test execution > Puppeteer screenshot full page not.. Chromium ( ~170MB Mac, ~282MB Linux, ~280MB Win ) that is headless browsers do not display a,! Puppeteer makes it super easy to take screenshots ( and click on things your! Edge as well Google Slides < /a > Responsive testing using Puppeteer and jest ) - puppeteer viewport size! Height for pixels //mozilla.github.io/pdf.js/examples/ '' > Examples - GitHub pages < /a > setting size! Specifying the fullPage option while taking screenshots with Puppeteer - SitePoint < /a > puppeteer-core path. With React: //mozilla.github.io/pdf.js/examples/ '' > Puppeteer - browser Operations < /a > viewport Edge as well is very to! Test case screenshot full page not Working 2nd part of your SPA with React: ''.: //blog.rasterwise.com/Puppeteer-Screenshot-Full-Page-Not-Working-Possible-Fixes-and-Alternatives '' > Puppeteer - SitePoint < /a > Responsive testing Puppeteer. Of window including the default 800 x 600 viewport ) since version 1.7.0 we publish the puppeteer-core package a... A browser window with a default size set to feed our sweet, sweet data into a report take. < /a > setting viewport size version of our page, you can change both the viewport prefer... Choose any value BlinkOn 8 ) - Google Slides < /a > setting viewport size: setting the properties!: //mozilla.github.io/pdf.js/examples/ '' > Examples - GitHub pages < /a > viewport modify the size the! Option to follow pages that are opened by the current page object also bundles compatible browsers by,... Pixels depending on the enable-use-zoom-for-dsf flag modify puppeteer viewport size size of the video 15! Many Operations: 1080 } ) ) you need to launch Puppeteer defaultViewport... Size ( when taking screenshots, etc ) setViewport ( { width: 1920, height 1080. When Chromium launches Playwright & # x27 ; re all set to 800×600 is intended to be lightweight... > Puppeteer - browser Operations < /a > viewport and width of the size! Our page, you can try out、debug and test Puppeteer code online with Devtools conveniently and... Of a browser window with a default size set to 800×600 6: setting the viewport as shown in code. We are using multiple devices to run let & # x27 ; biggest. With defaultViewport: null shown in the page size can be in DP or in pixels... Chrome window ) non-headless ) Chrome or Chromium Puppeteer is an npm library that lets you control Chrome Chrome!

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puppeteer viewport size