Unknown file extension
File type: Unknown file
The .pi_ file extension is not associated with a documented file format in this record.
The software that created the file and the data it contains are unknown.
File type category:
Unknown file
Date updated: October 4, 2026
No confirmed vendor, application, platform, or file-format specification is available for the .pi_ file extension. Its purpose and internal contents therefore cannot be identified reliably.
No specific program can be recommended for opening a .pi_ file. The file should be opened with the application that created it, if that application is known.
If the source is unknown, ask the sender or administrator which software produced the file before trying to open it.
A .pi_ file cannot be converted reliably without identifying its format and the software that created it.
After the originating application is identified, use that application's own export or save-as function, if available.
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