Con Ninja divides the icon format into PNG and vector. By default, it will search only the bitmap used by more people. If necessary, search SVG icon can be enabled . One big feature of vector graphics is that they are not distorted by zooming in and out, so they are better suited for printing or application development.
In addition, Icon Ninja can combine all the icons you have selected into a single PNG image, and use CSS Sprites processing techniques to improve your site's loading speed. Developers do not have to put together their own pictures to complete the online job .
http://www.iconninja.com/
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