Scalable Vector Graphics — vector graphics — is fundamentally separate from JPG. JPG saves photos as a grid of pixels, SVG stores illustrations as mathematical definitions of geometric shapes. Meaning SVG images scale to all sizes — from a tiny icon to a billboard — without quality loss.
Converting JPG to SVG is a technique known as vectorization, and it is very beneficial for logos and flat artwork.
Prior to converting JPG to SVG, it is important to realize how the process works. JPG files are a pixel-based image — a set grid of dots. SVG files are a mathematical image — a set of mathematical instructions which software displays as website the graphic.
Results are excellent for clean images with distinct shapes and few colors — icons, logos, symbols and line art. It does not work for complex photos with complex gradients.
For quality conversion, Adobe Illustrator's Image Trace function gives the most flexibility. Load the image in Illustrator, select the image, access the Image Trace panel and select an appropriate preset.
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