SVG — vector graphics — is essentially separate from JPG. Whereas JPG saves pictures as a grid of pixels, SVG stores images as geometric descriptions of shapes, lines and colors. Meaning SVG graphics can be displayed at any size — from a 16x16 pixel favicon to a massive print — without pixelation.
Transforming JPG to SVG is a operation referred to as raster to vector conversion, and it is particularly valuable for logos and simple graphics.
Before converting JPG to SVG, it is important to understand what the conversion actually does. A JPG is a raster image — a static grid of pixels. SVG files are a scalable image — a series of geometric shapes that applications renders as the image.
Results are excellent for uncomplicated graphics with distinct shapes and few colors — logos, icons, silhouettes and flat artwork. It does more info not work for photographic images with complex gradients.
For professional results, Illustrator's Image Trace feature offers the most control. Load the image in Illustrator, select the graphic, open the Image Trace panel and select an appropriate preset.
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