ExPdfCore

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Hex.pm Docs License

Core PDF writer engine for Elixir — document, page, export, fonts, images, graphics state, and layout primitives. Uses only the Erlang/OTP standard library. No Hex runtime dependencies, no system tools.

Part of the ExPDF umbrella.

Installation

def deps do
  [
    {:ex_pdf_core, "~> 1.0"}
  ]
end

Most users should depend on ex_pdf instead, which bundles core, components, and the reader.

What's included

  • Pdf — main API: build documents, add pages, draw text, images, shapes, and manage graphics state
  • Pdf.Document — document structure, page tree, fonts, objects
  • Pdf.Page — individual page content streams
  • Pdf.Export — serialize to PDF binary
  • Pdf.Layout — text measurement and wrapping
  • Pdf.Font / Pdf.Fonts — built-in and external font handling
  • Pdf.Component.Box — box with border, background, padding
  • Pdf.Component.Row — horizontal column distribution by weight
  • Pdf.Component.Column — vertical row stacking with fixed heights

Usage

Pdf.build([size: :a4, compress: true], fn pdf ->
  pdf
  |> Pdf.set_font("Helvetica", 12)
  |> Pdf.text_at({200, 200}, "Hello, world!")
  |> Pdf.add_image({100, 100}, "logo.png")
end)
|> Pdf.export()

License

MIT. See LICENSE.md.