Though PDFs are commonly used for text documents, they can be a convenient format for graphics. Only the newest web browsers allow users to open and view SVGs. The major disadvantage of SVGs is that it’s not compatible with older browsers. This makes it an SEO gem, as it helps search engines recognize keywords and index an image easier. Plus, they are written in XML, which means the shapes, colors, and text that make up an image are specified in the code. SVGs also tend to take less space than PNGs. With PNG, changing the shape of an image without losing quality would be impossible, since it’s a solid composition of pixels. Not only can you recolor an SVG image - you can also alter the shapes that make it up by editing vector paths. SVGs are easily editable since vector paths allow you to tweak the image element by element. For this very reason, SVG is perfect for icons and illustrations but not great for detailed digital artworks where each pixel has a different color and opacity level. That is because instead of treating an image as a set of discrete pixels, it treats them as a set of points and paths between them. Because SVGs are vector files, you can zoom in and out and scale them as much as you want without losing image quality. Scalable Vector Graphics is a popular format in graphic design. It also means you can’t edit PNG files element by element, unlike SVGs that consist of easily editable vector paths. Because PNG is a raster format, you can’t scale it up without losing image quality. The biggest downsides of a PNG file are bigger sizes and lower editability compared to SVGs. It’s an open format that uses lossless image compression and stores transparency data, making it a perfect choice for graphics. PNG is an unproblematic format that is compatible with nearly every platform you can imagine.
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