SVG to BMP Converter

Some programs cannot open SVG at all: older Windows software, embroidery and engraving tools, game modding utilities, microcontroller displays. They want a plain BMP bitmap. This converter draws your SVG at the exact pixel size you choose — sharp, because the vector is rendered at that size — and saves it as a 24-bit BMP on a background colour, a 32-bit BMP with transparency, or an 8-bit greyscale BMP.

How to use this tool

1. Drop .svg files or paste SVG code.
2. Choose the output size: 1×, 2×, 4×, a custom scale or an exact width in pixels.
3. Pick the BMP type and, for 24/8-bit, the colour that fills transparent areas.
4. Download the BMP (several files come as a ZIP).

Formula

Output width = SVG width × scale (or the exact width); height = width × SVG height ÷ SVG width. BMP size = 14 + 40 (108 for 32-bit) [+ 1,024 palette for 8-bit] + height × row, with row = width × bytes per pixel rounded up to a multiple of 4.

The SVG size comes from its width and height (mm, cm, in, pt and pc at the CSS rate of 96 px per inch) or from its viewBox. Rows are stored bottom-up in BGR order; 32-bit files use a BITMAPV4HEADER with an alpha mask. Images, fonts and stylesheets referenced by URL are not loaded inside an SVG image, so embed them or convert text to outlines.

Example

The 120 × 80 test SVG at 2× is 240 × 160 px; each 24-bit row is 720 bytes, so the BMP is 54 + 160 × 720 = 115,254 bytes. At an exact width of 101 px the height is 101 × 80 ÷ 120 = 67 px and each 303-byte row is padded to 304: 54 + 67 × 304 = 20,422 bytes.