Convert SVG to PNG — svg_to

Convert an SVG string or SVG file path to a high-quality PNG image. The function sanitizes the SVG and embeds required WOFF2 fonts (downloaded on demand into a user cache) to ensure consistent font rendering.

Important note about DPI: rsvg rasterizes primarily based on pixel dimensions. To make DPI matter, this function scales output pixel size by (dpi / 96) when width / height are not explicitly provided.

Usage

svg_to_png(
  svg_input,
  output_path = NULL,
  width = NULL,
  height = NULL,
  dpi = 300,
  background = "transparent"
)

Arguments

svg_input: SVG string or path to an SVG file.
output_path: Output path for the PNG file (optional; a temp file is used if NULL).
width: Output width in pixels (NULL to infer from SVG and scale by DPI).
height: Output height in pixels (NULL to infer from SVG and scale by DPI).
dpi: Resolution in dots per inch (default 300 for high quality).
background: Background color. Use "transparent" or "none" for transparency (default), or specify a color like "white", "#FFFFFF", etc.

Value

Path to the generated PNG file.

Examples

svg <- svg_card("FAR", list(), list())
file_name <- tempfile(fileext = ".png")
png_path <- svg_to_png(svg, file_name, dpi = 300)
png_path <- svg_to_png(svg, file_name, dpi = 300, background = "white")