Viewport Sizes and Pixel Densities for Popular Devices
KKTool工具箱 - 为开发人员提供方便的在线工具
Optimize your images with a perfect balance in quality and file size.
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Android 9-patch shadow generator fully customizable shadows
create QR codes for free (Logo, T-Shirt, vCard, EPS)
simple online GIF maker and toolset for basic animated GIF editing.
