since 2000
Opening OO Files
The OO file type is primarily associated with Free Pascal.
What is an OO file?
OO files mostly belong to Free Pascal by FPC Development Team. Free Pascal (aka FPK Pascal) is a 32 or 64 bit (from 1.9.6) pascal compiler. It is available for different processors Intel x86, Amd64/x86 64 (from 1.9.6), PowerPC (from 1.9.2), Sparc (from 1.9.6) and Motorola 680x0 (1.0.x only). The following operating systems are supported Linux, FreeBSD, NetBSD, MacOSX/Darwin, MacOS classic, DOS, Win32, OS/2, BeOS, SunOS (Solaris), QNX and Classic Amiga.
How can I open an OO file?
You need a suitable software like Free Pascal to open an OO file. You need a suitable software like Free Pascal from FPC Development Team to open an OO file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your OO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a OO file directly in the browser:. Just drag the file onto this browser window and drop it.
Online OO Text Viewer
or drag and drop it here
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Trouble Opening a .OO File? These Steps Will Help
Because .OO files can originate from different programs, they aren't universally openable by standard applications.
- Identify the Source: If received from a software developer or a legacy OS/2 workflow, it is likely a compiled object file.
- Check the Header: Open the file in a hex viewer to inspect its first bytes.
LXorMZsignatures often indicate an OS/2 object format.- Readable plain text might suggest a custom configuration file.
- Use the Original Software: Opening the file usually requires the original program; try Free Pascal, an OS/2 development toolchain, or ask the sender if uncertain.
- Use this Webpage: Drag and drop your .OO file into our viewer to detect its format, extract readable metadata, and preview its contents.
Technical Data for OO File Extension
The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.
ProgramID: PAZOO
EXEFile: %ProgramFiles%\PowerArchiver\POWERARC.EXE %1
EXEFile: %ProgramFiles%\PowerArchiver\POWERARC.EXE %1
an oo Object File for OS/2 Version is a special file format by FPC Development Team and should only be edited and saved with the appropriate software.
How to solve problems with OO files
- Associate the OO file extension with the correct application.
- Update your software that should actually open object file for os/2 versions. Because only the current version supports the latest OO file format. Search, therefore, e.g. on the FPC Development Team manufacturer website after an available Free Pascal update.
- To make sure that your OO file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .OO file online - secure, fast, and no downloads needed.