svgomg
SVG在线压缩平台
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screen sizes
Viewport Sizes and Pixel Densities for Popular Devices
Android 9 patch
Android 9-patch shadow generator fully customizable shadows
ezgif
simple online GIF maker and toolset for basic animated GIF editing.
goqr
create QR codes for free (Logo, T-Shirt, vCard, EPS)
tinypng
Optimize your images with a perfect balance in quality and file size.