File Type Precompiled Header File IconPrecompiled Header File
File Format Standard
Usage Open manually; may be referenced by an application
Rank ★ ★ ★  Common

A PCH file contains source code that is referenced by a programming project before it is compiled. It often links to other files, using #import and #include commands.

PCH files are used by several different programming applications, including Apple Xcode and Microsoft Visual C++. They are often included with the programming software and can be opened with a text editor. However, they typically should not be modified by the user.

Open With

IconMicrosoft Visual Studio

IconCode Blocks

IconAny text editor


IconApple Xcode

IconCode Blocks

IconMacroMates TextMate


IconCode Blocks

Updated May 22, 2009