LanguageXPT
Firefox XPCOM type library
File type: Various data file
Files with xpt file extension are in most cases XPCOM libraries for Mozilla Firefox web browser. Used for internal purposes.
Found 3 different file type records with the same xpt filename suffix.
What is xpt file?
File type category:
Various data file
Date updated: June 27, 2025
The xpt file extension is used by Mozilla Firefox for XPCOM type libraries.
XPCOM Type Library (xpt fle) is used to add features and extensions to Firefox web browsers.
XPCOM type libraries, or "typelibs", are binary interface description files generated by the XPIDL compiler. Type libraries enumerate the methods of one or more interfaces, including detailed type information for each method parameter.
Typelibs might be more aptly named "interface libraries", but Microsoft has already established a precedent with their naming scheme and so it suck with it to avoid developer confusion.
How to open xpt file?
Probably not meant to be accessed by the user.
How to convert xpt file?
Probably cannot be converted to anything else.
Suggested software to open xpt file:
Associated software actions with the xpt file
Software applications that can open xpt files:
Firefox (Microsoft Windows)
SeaMonkey (Microsoft Windows)
Firefox for Mac (Apple macOS / Mac OS X)
Seamonkey for Mac (Apple macOS / Mac OS X)
Firefox for Linux (Linux/Unix)
Software applications that handle other tasks involving xpt files:
Firefox (Microsoft Windows)
SeaMonkey (Microsoft Windows)
Firefox for Mac (Apple macOS / Mac OS X)
Seamonkey for Mac (Apple macOS / Mac OS X)
Firefox for Linux (Linux/Unix)
Seamonkey for Linux (Linux/Unix)
eXact Packager model
File type category:
Various data file
Date updated: January 11, 2019
The xpt file extension is also related to the eXact Packager and used for its default models format.
eXact Packager is a program for creating, indexing and packaging e-learning content.
How to open xpt file?
You can work with these files using eXact Packager program.
How to convert xpt file?
Probably can be exported to other formats.
Suggested software to open xpt file:
Associated software actions with the xpt file
Software applications that can open xpt files:
eXact Packager (Microsoft Windows)
Software apps that create xpt files:
eXact Packager (Microsoft Windows)
Software applications that handle other tasks involving xpt files:
eXact Packager (Microsoft Windows)
SAS transport (XPORT) data
File type category:
Various data file
Date updated: June 20, 2018
The xpt file extension is used for a data format by Statistical Analysis Software (SAS). All transport data set records are 80 bytes in length. If there is not sufficient data to reach 80 bytes, then a record is padded with ASCII blanks to 80 bytes.
All character data are stored in ASCII, regardless of the operating system. All integers are stored using IBM-style integer format, and all floating-point numbers are stored using the IBM-style double (truncated if the variable's length is less than 8).
The xpt file ares used to export an SAS data set to another platform or software program.
How to open xpt file?
Use compatible tools to work with *.xpt files.
How to convert xpt file?
Probably can be exported to other formats.
Suggested software to open xpt file:
Associated software actions with the xpt file
Software apps that create xpt files:
SAS (Microsoft Windows)
Software applications that handle other tasks involving xpt files:
SAS (Microsoft Windows)