In the same manner as screen resolution, you can choose the pixel density - which affects Opera Mobile’s default zoom factor and devicePixelRatio - using the dropdown menu in the Pixel Density section. You can also create your own custom resolutions using the Add button, and delete the existing ones using the Remove button. The screen resolution can be changed by choosing between the different options in the Resolution dropdown menu. Mobile phones and tablets come in varying shapes and sizes. Figure 2: The Opera Mobile Emulator’s Profile Selector Resolution Note that you can also tweak existing profiles via the Save/save as… button appearing below the selected profile, or delete them using the Remove button. When you’re all set, select the Add button under the profile selection box, choose a name for the new profile, and save it to the list. If you want to create a new profile, select the Custom option from the profile list and set the relevant options for Resolution, Pixel Density, User Interface, User Agent String, Window Scale, and Arguments. You can then start an Opera Mobile instance using the selected profile by clicking on the Launch button. The Profile Selector comes preconfigured with a series of popular phone and tablet device profiles, such as Samsung Galaxy S III, Samsung Galaxy Tab 10.1 and HTC One X. Here we will discuss the different options available in the Profile Selector. This Profile Selector allows you to spawn different instances of Opera Mobile on your desktop to accurately test different phone configurations, as seen in Figure 3. When you first open the Opera Mobile Emulator, you’re presented with the Profile Selector - see Figure 2.

It’s a small, native application that’s easy to install on your desktop machine and runs exactly the same code as its mobile phone version - that way, you can be assured that what you’re seeing on your test environment is practically identical to the experience your end users will get.

Our Opera Mobile Emulator for Windows, Linux and Mac makes things a whole lot easier. Making sure that your site looks great and works exactly as it should in mobile and tablet browsers can often be a tedious process - you typically need one or more physical devices, or some form of virtual machine emulating the whole operating system, and that’s just the start. Figure 1: Opera Mobile Emulator running on Mac Introduction

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