Vector graphics like SVGs can scale to any size without losing quality. JPEG employs lossy compression – the higher the compression level, the smaller the image file size, and the lower the image quality. JPEGs have the widest support among browsers and devices, and are very commonly used across the web. Let’s explore some common raster image formats below: Read more on lossless vs lossy compression here. Pixel data is stripped from the original image when the compression is performed to reduce file size at the expense of quality. Image data is merely optimized and quality is the same as the original image. No pixel data is removed from the original image when the compression is performed. In addition, raster images can be compressed losslessly or lossily: Once they are exported to JPEG, PNG or GIF, they are raster images. While the most common raster image example is a photograph, you can create raster images from any variety of graphic design tools or computer rendering software. High resolution/quality raster images have a high pixel count for sharper quality and better colour representation.
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