chmlib ☆

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Description:
Library for dealing with Microsoft ITSS/CHM files

Type: Formula | Latest Version: 0.40@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: library chm microsoft c parsing

Install: brew install chmlib

About:
CHMLib is a lightweight, portable C library designed for parsing and extracting content from Microsoft ITSS (InfoTech Storage System) and CHM (Compiled HTML Help) files. It provides a simple API for developers to access the internal structure of these proprietary archives, enabling the retrieval of HTML pages, images, and other embedded resources without requiring external tools.

Key Features:

Lightweight C library with no external dependencies
Supports reading and parsing CHM and ITSS archives
Provides API for iterating through file contents and extracting data
Portable across multiple operating systems

Use Cases:

Integrating CHM file support into custom applications or documentation viewers
Extracting content from legacy Microsoft Help files for conversion or archival purposes
Developing tools that need to read CHM files programmatically on non-Windows platforms

Alternatives:

libchm – Similar functionality, but chmlib is often preferred for its simplicity and minimal footprint
7zip – General-purpose archive tool that can extract CHM files but lacks a dedicated API for programmatic access

Version History

Detected	Version	Rev	Change	Commit
Oct 15, 2025 5:02pm		0	VERSION_BUMP	2ce94e98
Sep 12, 2025 8:51pm		0	VERSION_BUMP	9dd26fc0