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CAT Converter
Fast CAT conversion for Windows. reaConverter processes large batches reliably, without crashes or timeouts.
How to Convert .cat Files in Bulk
1. Install reaConverter
2. Select CAT Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless CAT 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.
Extra Tools
Do more with your files
Converting CAT files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.
Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.
User reviews
From those who tried it
Average User Rating:Last updated on July 28, 2026
Questions & Answers
CAT files: Frequently Asked Questions
What are CAT files?
The CAT file format is associated with Photomatix, a program specialized in merging multiple photographs for creating high-dynamic-range images (HDRI) and the turning them into low-dynamic-range (LDR). The CAT extension is considered rare and can be opened with a limited number of image viewers.
Can reaConverter open CAT files?
reaConverter fully supports the CAT file format – open, edit, and export CAT files to any other popular file format with ease.
How do I change CAT to another format?
reaConverter is a user-friendly tool for converting CAT files. Once installed on your computer, it allows you to convert all your .cat files at once with just a few clicks. You can even convert cat images directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert CAT online?
If you only want to convert a few CAT files, you are welcome to try our free online CAT converter.
How can I turn CAT files on my computer to another format?
The best way to convert CAT files 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 CAT.
How can I automate CAT 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 CAT 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 cat converter.
What else can I do with reaConverter?
Convert GIS filesConvert Gerber filesChange color spaceChange format settingsCopy metadata (EXIF, IPTC)
What formats can I convert a CAT file to?
Discover More
Beyond CAT conversion
Convert .cat files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
