Which MIME types are related to file extension ".hhp"?
The .hhp file extension is associated with 1 MIME types:
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .hhp Files
HHP files are project files for the Microsoft HTML Help system. They use the text/plain MIME type, meaning they are stored in plain text. This file holds the instructions and references needed to build a compiled help file (.chm).
- Main use: Defining the structure of a help project for Windows applications.
- Functionality: Listing topics, navigation, and indexing details.
- Software: Opened with Microsoft HTML Help Workshop or any text editor.
- Technical note: They provide the blueprint for compiling help documents.
Based on information from FilExt.com, these files serve as the minimal project setup in creating robust help systems.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
FAQs
What is an HHP file used for?
An HHP file acts as the main project configuration file for creating Microsoft HTML Help (.chm) documents. It contains plain text settings that define window styles, topic lists, and file locations required by the help compiler.
How do I open or edit an HHP file?
You can open these files using the official Microsoft HTML Help Workshop to edit project settings via a graphical interface. Since the file essentially uses the text/plain structure, you can also view and manually edit the raw configuration using any text editor like Notepad or VS Code.
How do I convert an HHP file to a CHM file?
You cannot simply "save as" CHM; you must compile the project. Open the HHP file in Microsoft HTML Help Workshop and select the "Compile" option, or use the command-line tool hhc.exe pointing to your .hhp file to build the final help document.
Can I recover an HHP file if I only have the compiled CHM?
Yes, you can decompile a .chm file back into its source components, which regenerates the .hhp project file. This is often done using the built-in Windows command: hh.exe -decompile [TargetFolder] [SourceCHM].
What MIME type is associated with HHP files?
HHP files are standard text files and are typically associated with the text/plain MIME type. This configuration ensures that systems recognize the file as human-readable code rather than binary data.
Is Microsoft HTML Help Workshop still supported?
The software is considered legacy and is no longer actively developed by Microsoft, though it is still widely used to maintain older help systems. Modern documentation projects often use tools like MadCap Flare or HelpNDoc, which can import .hhp projects.
General FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.