Scalable Vector Graphics — Scalable Vector Graphics — is essentially separate from JPG. JPG encodes pictures as a raster of pixels, SVG encodes illustrations as mathematical definitions of shapes, lines and colors. This means SVG files work at all sizes — from a tiny icon to a large banner — with no loss of sharpness.
Converting JPG to SVG is a technique referred to as raster to vector conversion, and it is especially useful for icons and here clean graphics.
Before converting JPG to SVG, it is important to realize what happens. A JPG is a raster image — a set grid of dots. An SVG is a vector image — a set of mathematical instructions that applications renders as the image.
Results are excellent for uncomplicated graphics with defined shapes and limited colors — icons, logos, symbols and line art. It works less well for detailed photographs with complex gradients.
For professional results, Illustrator's Image Trace feature gives the most control. Load the image in Illustrator, click the graphic, open the Image Trace dialog and select an relevant setting.
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