This page can be used to apply a calibrated level of Gaussian blurring to an image, in order to help evaluate its visual clarity. This tool is designed for use with mobile screenshots, banner adverts, or ‘mockups’ of screenshots that are full width, but not necessarily full height.
The free version of this tool only shows Check Level AA, and the level of blurring corresponds to a mobile screen that is 68 mm wide (the size of the screen on an iPhone 6 / 7 / 8).
The Pro version of this tool allows you to process multiple images, shows all 3 Check Levels, and allows the screen width to be changed.
Get started by using the button below to select an image file. To ensure the quality of the simulation, the image should be at least 720 pixels wide. The image will be processed locally by your computer; it is not transferred over the Internet.
When viewing the blurred version of the image, it should be presented at a reasonably large size, such that moving closer or further away from the screen doesn’t make any difference to the details that can be perceived.
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