Extract text from HHP files
To convert your HHP file to another format, you need Microsoft HTML Help Workshop or other Developer software.
To convert other file formats to the "Documentation Project" file type, you need software like Microsoft HTML Help Workshop or a similar tool.
The .HHP file serves as the project configuration or "makefile" for the legacy Microsoft HTML Help system. It acts as the central hub that organizes individual HTML source files, image assets, navigation indices (Index.hhk), and table of contents (Table of Contents.hhc) before they are compiled into a single CHM binary.
The frustrating part for users is that an .HHP file is not the documentation itself; it is a plain-text recipe using INI-style syntax. Opening it in a text editor reveals file paths and settings rather than readable content. Furthermore, the native tool required to process it, Microsoft HTML Help Workshop, is officially deprecated, lacks Unicode support, and behaves erratically on modern Windows versions. Because the output CHM format is often blocked by security policies, users frequently need to migrate these projects.
To make the content accessible, you should convert the project to modern standards. Dragging the .HHP into modern authoring tools like HelpNDoc allows you to republish the legacy content as a PDF manual, a responsive HTML website, or an ePub for e-readers without losing the original structure.
Convert.Guru analyzes your HHP file, detects the exact format, and lets you read the text inside.
Users also converted HCW, HHC and ADP files.
If you want to convert HHP file to HTML, HTM, CSS, JS, PHP, ASP, ASPX, JSP, JSPX, PY, RB or PL, you can use Microsoft HTML Help Workshop or similar software from the "HTML Help Project" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to HHP, try Microsoft HTML Help Workshop or another comparable tool in the "HTML Help Project" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our HHP converter.