H file extension
The table below provides useful information about the .h file extension. It answers questions such as:
- What is the .h file?
- What program do I need to open a .h file?
- How can the .h file be opened, edited or printed?
- How can I convert .h files to another format?
Table of Contents
- ✅ C Header File
- ✅ Miranda IM SmileyAdd Plugin
- ✅ Xcode Objective-C Header
- 🔄 .h file converters
- 🚫 .h file related errors
We hope you find this page helpful and a valuable resource!
3 extension(s) and 0 alias(es) found in database
✅ C Header File

C language header file. Information that is needed by several different files or functions is collected into a header file. A header file contains C-language definitions and structures. Centralizing information into a header file facilitates the creation and update of programs.
✅ Miranda IM SmileyAdd Plugin

H file is a Miranda IM SmileyAdd Plugin. Miranda IM is an open source, multi-protocol instant messaging client.
✅ Xcode Objective-C Header

H file is an Xcode Objective-C Header. Xcode is a suite of tools, developed by Apple, for developing software for Mac OS X and iOS.
Other types of files may also use the .h file extension.
🔴 Can't open a .h file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.h
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .h file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
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