know what you will get
A JPEG is usually a photo, and photos trace into posters
Tracing reduces an image to a few flat colours and draws a shape around each region. Continuous tone has no flat regions, so a photograph comes back as bands of colour — the screen-print look. It is a deliberate style, and at four or six colours it can be a striking one.
If your JPEG is actually a flat graphic — a screenshot of a logo, a scanned line drawing, a chart — the result is a genuine vector version that scales cleanly. JPEG compression leaves halos around hard edges, so turning on noise smoothing usually helps more here than it does with a PNG.
three steps
How to convert a JPG to SVG
Drop the JPG
The file stays on your device.
Choose how many colours
Fewer colours give a bolder, simpler result.
Compare, then download
Both versions sit side by side so you can judge the result.