libHaru is a free, open-source, cross platform library for generating PDF files for applications written in C or C++.^[1][2][3] It is not intended for reading and editing existing PDF files.

It supports the following features:

• Generating PDF files with lines, text, images.
• Outline, text annotation, link annotation.
• Compressing document with deflate-decode.
• Embedding PNG, Jpeg images.
• Embedding Type1 font and TrueType font.
• Creating encrypted PDF files.
• Using various character sets (ISO8859-1~16, MS CP1250~8, KOI8-R).
• Supporting CJK fonts and encodings.

libHaru is written in ANSI C and should compile easily with any compliant C compiler.

It tested in the following environment:

• Cygwin + GCC (Microsoft Windows).
• Cygwin + MinGW (Microsoft Windows).
• Microsoft VC++ (Microsoft Windows).
• Borland C++ (Microsoft Windows).
• GCC (Linux, FreeBSD, NetBSD, Solaris, MorphOS...).

libHaru can be used as a static library or as a dynamic library.

When you use it as static-library, it can be used by C and a C++. But when you use it as shared-library, it can be used by many development languages which support shared library.

libharu provides bindings for programming languages:

• C++^[4]
• C#
• Delphi
• FreeBASIC
• Free Pascal
• Python
• Ruby
• Visual Basic
• PHP^[5]
• Perl^[6]
• Lua^[7]
• JavaScript^[8]