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. Which means SVG files work at all sizes — from a small icon to a large banner — with no loss of sharpness.
Converting JPG to SVG is a process referred to as raster to vector conversion, and it is very beneficial for icons and clean graphics.
Before converting JPG to SVG, it is important to realize what happens. A JPG is a raster image — a set grid of image pixels. An SVG is a mathematical image — a set of mathematical instructions that applications displays as the graphic.
This works extremely well for uncomplicated graphics with defined shapes and limited colors — icons, logos, symbols and line art. It works less well for detailed photographs with fine detail.
For professional results, Illustrator's Image Trace function gives the most flexibility. Load the image in Illustrator, click the graphic, open the Image Trace panel and select an appropriate preset.
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