Scalable Vector Graphics — the SVG format — is completely separate from JPG. JPG encodes pictures as a raster of pixels, SVG encodes illustrations as mathematical descriptions of paths and colors. Meaning SVG images scale to any size — from a 16x16 pixel favicon to a billboard — 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 set grid of image pixels. An SVG is a vector image — a set of mathematical instructions that a browser check here 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 photographic images with fine detail.
For best output, Illustrator's Image Trace function provides the most flexibility. Open your JPG in Illustrator, highlight the image, access the Image Trace panel and pick an suitable option.
Use alljpgconverters.com for a 100 percent free browser-based JPG to SVG tool with no account required.