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![]() The Mobile Emulator Device ToolbarIt’s worth spending a little time familiarizing yourself with the toolbar and menu above the mobile emulator: Mouse-specific events and CSS effects should not occur.Hold down Shift then click and move your mouse to emulate pinch zooming. This will react to touch-based JavaScript events such as touchstart, touchmove and touchend. Touch Enabled EmulationMove your mouse over the device to see a circular “touch” cursor. Developer ToolsStart Chrome, navigate to the web page you want to test and open the Developer Tools (Menu > Tools > Developer Tools, Cmd + Opt + I on macOS or F12 / Ctrl + Shift + I on Windows and Linux).You can now enable the browser emulator by clicking the Toggle device toolbar icon in the top left:The dimensions of the emulated screen can be changed when Responsive is selected as the device type. Emulated Device OptionsThe drop-down menu on the left allows you to select a device. ORANGE: queries which target a minimum widthAny bar can be clicked to set the emulator screen to that width. GREEN: queries which target widths within a range BLUE: queries which target a maximum width capture a screenshot (including the device frame if shown)Select Show media queries from the three-dot menu to view a graphical color-coded representation of all media queries set in the CSS. the device frame (if available, a graphic of the phone or tablet) Free tab software for ukulele macIn extreme cases, the viewer would be directed to a different site. This can be examined on the client or server-side and, during the dark days of web development, would be used to modify or provide a different user experience. and pixel ratio (such as 2 for iPhone Retina screens where the pixel density is twice as high as the reported viewport resolution)All browsers identify themselves with a user agent string sent on every HTTP header. a classification such as “Mobile” or “Tablet” Click Edit… at the bottom of the device drop-down or click the DevTools Settings cog icon and choose the Devices tab:You can enable or disable devices or enter your own by defining: the latency in milliseconds (the typical delay when making a network request)Smart phones and tablets often have sensors such as GPS, gyroscopes, and accelerometers, which aren’t normally present in desktop devices. the upload speed in kilobits per second the download speed in kilobits per second You can set your own bandwidth configuration by clicking the DevTools Settings cog icon and choosing the Throttling tab: Bandwidth Throttling SimulationThe throttling drop-down allows you to emulate slow network speeds typically experienced on mobile connections or dodgy hotel and airport Wi-Fi! You can use this to ensure your site or application loads quickly and remains responsive in all environments.The throttling drop-down is available in the Network tab and Chrome’s device toolbar. Android Emulator Cell Full Range OfChrome’s preview pane shows a synchronized view of the device screen and you can interact either using the device or Chrome itself.The full range of developer tools can be used including the Application tab to test Progressive Web Apps in offline mode. Enter in the address bar, ensure Discover USB devices is checked, then attach your phone or tablet and follow the instructions.Chrome allows you to set up port forwarding so you can navigate to a web address on your local server on the device. An idle state to examine how an app reacts to a lock screen.Finally, Chrome allows you to connect a real Android device via USB for remote device debugging. Several presets are available or you can move the device image by clicking and dragging. You can also select Location unavailable to emulate how your application reacts when the device cannot obtain a reliable GPS signal. The current latitude and longitude or select a major city from the drop-down. It’s far easier than switching between real smart phones, and you’ll have all the developer tools at your disposal. For example, Chrome shows a representation of the page on an iPhone or iPad but will not attempt to simulate the standards support or Safari quirks.That said, for quick and dirty mobile testing, Chrome’s device emulation is excellent. Great! I Don’t Need Any Devices Now!Chrome’s mobile browser emulator is useful and powerful, but it’s no substitute for interacting with your website or app on a real device to evaluate the full user experience.You should also be aware that no device emulator is perfect.
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