Choose the size first: an SVG has no pixels
An SVG is a drawing described in shapes, so it can be drawn at any size without blurring. A PNG is a grid of pixels, so converting means choosing how many. "Own size" uses the width and height written in the SVG; 2× and 4× give a crisp picture for high-resolution screens and print; "Width…" lets you type an exact width, and the height follows the drawing’s shape.
The drawing is drawn afresh at the size you choose rather than enlarged from a small picture, so even a 4,000-pixel PNG has clean edges. The largest side is 8,192 pixels, which is what canvases handle reliably; on a phone a very large size may be made smaller to fit its memory, and the list says so when it is.
Transparency, fonts and what to check
- The background stays transparent in PNG (and WebP). Choose JPG and it is filled with white or the colour you pick.
- Text set in a web font that the SVG loads from the internet is drawn in a standard font instead, because nothing is fetched while drawing. Convert the text to outlines in your design app to keep the exact lettering.
- Pictures linked from outside the SVG do not appear; pictures embedded inside it do.
- Scripts and animations in the SVG are ignored: the PNG is the drawing as it first appears.
If the SVG states no width, height or viewBox at all, its own size is taken as 512 × 512 pixels.