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FTS Converter
FTS conversion in your browser, free and unlimited. Files never leave your machine. reaConverter for Windows handles the other 700+ formats in batch.
How to Convert .fts Images in Bulk
1. Install reaConverter
2. Select FTS Files
3. Start Conversion
Step by step
See It in Action
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.
Edit & Enhance
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.
User reviews
From those who tried it
Average User Rating:Last updated on July 26, 2026
Questions & Answers
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 PDF filesAdd watermark on imageChange format settingsCopy metadata (EXIF, IPTC)Convert GIS files
What formats can I convert a FTS file to?
Discover More
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.
