FTS Converter

Fast FTS conversion for Windows. reaConverter processes large batches reliably, without crashes or timeouts.

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reaConverter
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FTS Files
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FTSConverter

How to Convert .fts Images in Bulk

1. Install reaConverter

Download reliable FTS conversion software to convert multiple .fts files and folders in one go.
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Install reaConverter

2. Select FTS Files

Select FTSs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load FTS files

3. Start Conversion

Click Convert to start the bulk conversion of all selected FTS images. The process will begin right away.
reaConverter - Start FTS conversion

Convert FTS on your PC

For quick and effortless FTS file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your images

Converting FTS images for use in a workflow? Touch up, transform, apply editing and effects to your images during conversion.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

Image editing tools
Image editing

User Reviews

Average User Rating:
Last updated on July 01, 2026
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Marcus White
Healthcare IT
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"
Kevin Harris
Kevin Harris
Happy User
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User

FTS images: Frequently Asked Questions

What are FTS files?

FTS (Flexible Image Transport System), which is a standard format used to store and exchange scientific data, including images, spectra, and tables. FITS files are widely used in astronomical research and are supported by many software packages and telescopes.

Can reaConverter open FTS files?

reaConverter fully supports the FTS image format – open, edit, and export FTS files to any other popular file format with ease.

How do I change FTS to another format?

reaConverter is a user-friendly tool for converting FTS files. Once installed on your computer, it allows you to convert all your .fts files at once with just a few clicks. You can even convert fts images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert FTS online?

If you only want to convert a few FTS images, you are welcome to try our free online FTS converter.

How can I turn FTS files on my computer to another format?

The best way to convert FTS images on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from FTS.

How can I automate FTS files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert FTS files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line fts converter.

What else can I do with reaConverter?

Convert RAW photosChange format settingsChange DPICopy metadata (EXIF, IPTC)Convert PDF files

What formats can I convert a FTS file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  cit  dcm  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  glb  gltf  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  step  stl  stp  svg  svgz  tga  tif  tiff  u3d  webp  webpll  wmf  wmz  wpg  wrl  x3d  xbm  xpm 

Beyond FTS conversion

Convert .fts files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.
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Free trial · Windows 10/11 · 64-bit · v8.0.241 · Files never leave your computer
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