SVG — vector graphics — is fundamentally distinct from JPG. Whereas JPG encodes photos as a raster of pixels, SVG saves illustrations as mathematical descriptions of geometric shapes. Which means SVG images can be displayed at all sizes — from a 16x16 pixel favicon to a large banner — without pixelation.
Transforming JPG to SVG is a operation known as image vectorization, and it is especially useful for logos and simple graphics.
Before converting JPG to SVG, it is necessary to realize how the process works. A JPG is a raster image — a fixed grid of image pixels. An check here SVG is a mathematical image — a set of mathematical instructions that a browser displays as the graphic.
The conversion works great for simple images with distinct shapes and few colors — logos, icons, silhouettes and flat artwork. Results are poor for photographic images with thousands of colors.
For best output, Adobe Illustrator's Image Trace tool offers the most control. Load the image in Illustrator, select the graphic, open the Image Trace dialog and choose an relevant setting.
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