Choose PNG for diagrams
PNG handles sharp lines, UI screenshots, flat colors, and transparent backgrounds well.
Reverse workflow
Draw.io and diagrams.net include image export controls. PNG is normally the better choice for diagrams because it keeps text and lines sharper and can preserve transparency.
PNG handles sharp lines, UI screenshots, flat colors, and transparent backgrounds well.
JPEG may produce smaller photographic images, but compression can blur fine diagram text and connectors.
If the destination supports SVG, it can preserve crisp vector shapes at different display sizes.
The reverse task—reconstructing a PNG or JPG as editable Draw.io shapes—requires an image-to-diagram converter.
See Franklin's Image-to-Draw.io overview