SVG — vector graphics — is essentially distinct from JPG. Whereas JPG saves photos as a raster of pixels, SVG encodes illustrations as mathematical definitions of shapes, lines and colors. This means SVG images scale to any size — from a small icon to a massive print — without pixelation.
Changing JPG to SVG is a operation called vectorization, and it is particularly valuable for illustrations and flat artwork.
When converting JPG to SVG, it is essential to know how the process works. A JPG is a bitmap image — a set grid of dots. An SVG is a vector image — a set of mathematical instructions that applications renders as the image.
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. Open your JPG in Illustrator, highlight the image, access the Image Trace settings and pick an suitable option.
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