PNGTree is one of the best websites for downloading PNG images with a transparent background. From simple icons to buildings, clouds, etc. – you can find almost everything on this website.

However, unlike GIFs, PNG files don't support animations. The very similar MNG (Multiple-image Network Graphics) format does, but it has yet to gain the kind of popularity that GIF or PNG files have.

2. FotoFlexer FotoFlexer is a simple and free online image editor which allows editing transparent PNGs. Upload your photo, click on the Resize button, type in your dimensions, and go ‘ Apply.’ ...