Picsvg is a free online converter that can convert an image to a SVG file.
You can upload an image file (jpg,gif,png) up to 4 Mb, then you can select effects to enhance the SVG image result.
What is Svg ? and How can i use it ?
Svg (Scalable Vector Graphics) is an XML-based vector image format. The advantage is that you can modify image size without losing quality and detail.
Scaling the vector image preserves the shapes. This can be rendered at any resolution.
Create a font (example.ttf) with Icomoon . Edit online a svg file with Svg Edit . A vector graphics editor software : Inkscape . You can also use it with Adobe Illustrator
For a better conversion result, prefer an image with a solid background.
Picsvg is a very helpful tool for converting Icons.
Or before you print an image, a drawing, in 3d, convert it to svg and then to stl format.
Or you can use a SVG with Html (Non-exhaustive list) :
