LuaHPDF is a module that lets you programmatically create PDF files using Lua. It does this by binding to the Haru Free PDF Library, an open-source library that manages the details of PDF generation.

With this module, you can write Lua programs that will produce PDF files that include

This module works on POSIX and Windows platforms.


LuaHPDF conforms to the Lua 5.2 module standard. It provides a thin binding to the libharu library for PDF generation. The differences to the Haru application programming interface are minor, so you should be able to write Lua scripts using the documentation that is provided with the Haru library.

Obtaining LuaHPDF

The most recent version of the software is available from Github. The change log summarizes the release history for the software.

Building and installing LuaHPDF

The Haru library and Lua must be properly installed on your system to build LuaHPDF. Each can be compiled easily from source code. Alternatively, each is available in binary form for a wide variety of platforms. See their respective websites for more details.

Notes on building LuaHPDF guide you through compiling and installing the module on your system. Check out some of the features of the Haru library by generating demonstration PDFs.

Creating PDF files

The steps in creating a basic PDF file with LuaHPDF include

Here is a short example.

require "hpdf"

local pdf = hpdf.New()
if pdf then
  local page = hpdf.AddPage(pdf)
  local height = hpdf.Page_GetHeight(page)
  local width = hpdf.Page_GetWidth(page)
  local font = hpdf.GetFont(pdf, "Helvetica")
  hpdf.Page_SetFontAndSize(page, font, 24)
  hpdf.Page_TextOut(page, 60, height - 60, "Hello from Haru")
  hpdf.SaveToFile(pdf, "hello.pdf")
  io.write("Error creating PDF object\n")

Other demonstration scripts are provided in the download package.

Reporting issues

You're encouraged to provide suggestions and bug reports about LuaHPDF in this software's issue tracker.


LuaHPDF depends on other software. In particular, I am grateful to


Like Lua, this software is released under the MIT license.