HTMLCSS is a lightweight HTML/CSS parser written in C that allows applications to prepare a HTML document for rendering or conversion. HTMLCSS is extremely portable and only requires a C99 compiler like GCC, Clang, Visual C, etc. HTMLCSS is also extremely memory efficient, utilizing a shared string pool and smart CSS cache to minimize the size of a HTML document in memory.

I'm providing HTMLCSS as open source under the Apache License Version 2.0 with exceptions for use with GPL2/LGPL2 applications which allows you do pretty much do whatever you like with it. Please do provide feedback and report bugs to the Github project page so that everyone can benefit.

Features include:

• HTML 5 markup parser
• CSS 3 stylesheet parser
• OFC/OFF/TTC/TTF font file parser (metadata and metrics only)
• GIF/JPG/PNG image file parser (metadata only)
• Functions to calculate CSS properties for a given node in a HTML document
• Functions to extract HTML "runs" consisting of CSS properties, content strings, and image references that can be rendered directly, including the :before and :after content from a stylesheet

HTMLCSS does not support dynamic HTML content created using Javascript in a HTML document, as such content is typically used for interactive web pages while HTMLCSS is intended for use with static content.

You'll need a C99 compiler like GCC, Clang, or Visual C, along with a POSIX- compliant make program.

Run make to build the library and unit test program.

Run make install to install the library and header files under /usr/local. To install in a different location, specify the "prefix" variable, e.g.:

make install prefix=/some/other/directory

See the file DOCUMENTATION.md for documentation on using the library.

HTMLCSS is Copyright © 2018-2022 by Michael R Sweet.

HTMLCSS is licensed under the Apache License Version 2.0 with an exception to allow linking against GPL2/LGPL2-only software. See the files "LICENSE" and "NOTICE" for more information.