Export SVG to PNG at high resolution (2x, 4x)

An SVG is vector, so it can be rendered sharp at any size. The question is only which pixel size you want. LocalSvgPng rasterises the vector directly at the target size: a 4x PNG is drawn at 4x, not stretched from a 1x bitmap.

How the 1x size is decided

• If the root <svg> has width and height in px (or no unit), those are 1x.
• Physical units are converted at 96 px per inch: 1in = 96 px, 1mm ≈ 3.78 px, 1pt ≈ 1.33 px.
• If width/height are missing or relative (100%, em), the viewBox width and height are used. A viewBox="0 0 24 24" icon is 24×24 at 1x and 96×96 at 4x.
• If there is only one of width or height, the other follows the viewBox ratio.

Steps for an exact width

1. Drop the SVG on the converter and pick Custom.
2. Type only a width, for example 3000. Height is calculated from the aspect ratio.
3. Or type width and height: the image is scaled to fit inside that box without distortion, so one side may come out smaller than you typed.
4. Convert, then check the pixel size printed under each thumbnail.

Limits for very large exports

Each side is capped at 16384 px and the total at 64 megapixels. A 64-megapixel RGBA canvas needs about 256 MB of memory before PNG encoding, and browsers have their own canvas limits (MDN documents per-browser maximums). Phones often fail well below the cap. If the browser cannot encode, you get an error rather than an empty file. For print posters, consider exporting PDF from your design tool instead.