LanguageFTS
Flexible Image Transport System format
File type: Graphics file
Files with fts extension can mainly be found as astronomy files in Flexible Image Transport System.
Found 4 different file type records with the same fts filename suffix.
What is fts file?
File type category:
Graphics file
Date updated: June 23, 2025
File extension fts is used for Flexible Image Transport System format, a most commonly used standard format for images used in astronomy. Historically, magnetic tape was the original storage medium for FITS formats.
FITS is a digital file format used to store, transmit, and manipulate scientific and other images, specially in Astronomy. A major feature of the FITS format is that image metadata is stored in a human-readable ASCII header, so that an interested user can examine the headers to investigate a file of unknown provenance.
FITS is also often used to store non-image data, such as spectra, photon lists, data cubes, or even structured data such as multi-table databases. A FITS file may contain several extensions, and each of these may contain a data object. For example, it is possible to store x-ray and infrared exposures in the same file.
The most common suffix for this format however is the fits file extension, sometimes there can be found this format with fit file extension as well.
How to open fts file?
There are also some specialized FITS viewers that can open *.fts files.
Some image viewers such as GIMP, Photoshop, XnView and IrfanView can generally read simple *.fts images, however are not able to interpret more complex files.
How to convert fts file?
Specialized viewers AVIS - FITS Viewer can convert .fts images to common bitmap files.
Suggested software to open fts file:
Associated software actions with the fts file
Software applications that can open fts files:
AVIS - FITS Viewer (Microsoft Windows)
Software capable of saving fts files:
AVIS - FITS Viewer (Microsoft Windows)
Programs for viewing fts files:
XnView MP (Multiplatform)
Software apps that convert fts files:
XnView MP (Multiplatform)
Software apps that import fts files:
AVIS - FITS Viewer (Microsoft Windows)
XnConvert (Multiplatform)
Software apps that export fts files:
AVIS - FITS Viewer (Microsoft Windows)
XnConvert (Multiplatform)
Software apps that print fts files:
XnView MP (Multiplatform)
ArcView UNIX help supporting data
File type category:
Document file
Date updated: September 27, 2017
The fts file extension is also reported for being used for some sort of help supporting file in Unix version of ArcView. Might have been used in some previous version of the program.
Suggested software to open fts file:
Associated software actions with the fts file
Software apps that create fts files:
ArcGIS for Desktop Basic (ArcView) (Microsoft Windows)
Software applications that handle other tasks involving fts files:
ArcGIS for Desktop Basic (ArcView) (Microsoft Windows)
FastTrack Schedule data
File type category:
Various data file
Date updated: December 3, 2018
The fts file extension is also used in FastTrack Schedule software for one of its data files. FastTrack is a program for management of plans, projects and schedules.
The fts file contains saved schedule.
How to open fts file?
You can open and work with these files using FastTrack Schedule program.
How to convert fts file?
Possibly can be exported for reporting purposes to PDF or similar formats.
Suggested software to open fts file:
Associated software actions with the fts file
Software applications that can open fts files:
FastTrack Schedule (Microsoft Windows)
Software applications that can edit fts files:
FastTrack Schedule (Microsoft Windows)
Software capable of saving fts files:
FastTrack Schedule (Microsoft Windows)
Software apps that create fts files:
FastTrack Schedule (Microsoft Windows)
Software applications that handle other tasks involving fts files:
FastTrack Schedule (Microsoft Windows)
Windows Help index file
File type category:
Temporary file
Date updated: December 30, 2024
File extension fts is also associated with Windows Help. A .fts file was a search index, generated whenever a corresponding .hlp file was opened. These index files generally increase loading speed.
How to open fts file?
It is unlikely that you can open .fts files manually.
How to convert fts file?
Considering these files are generated for temporary purposes, it is unlikely you can convert .fts fo anything else.
Suggested software to open fts file:
Associated software actions with the fts file
Software applications that handle other tasks involving fts files:
Microsoft Windows (Microsoft Windows)