render

Overview ¶

Package render provides pure Go PDF page rendering to images.

This package renders PDF pages to raster images without requiring external dependencies like CGO, Ghostscript, or system libraries. It implements a subset of PDF operators sufficient for rendering most document pages.

Supported features:

• Path operations (moveto, lineto, curveto, closepath, rectangle)
• Fill and stroke operations (winding and even-odd rules)
• Graphics state (transformations, line width, line cap/join, dash patterns)
• Color spaces (DeviceRGB, DeviceCMYK, DeviceGray)
• Text rendering (Tf, Tj, TJ, Tm with basic font support)
• Image XObjects (inline and external images)
• Clipping paths

Example usage:

renderer, err := render.NewRenderer(pdfBytes)
if err != nil {
    return err
}
defer renderer.Close()

img, err := renderer.RenderPage(1, 150) // page 1 at 150 DPI
if err != nil {
    return err
}