CAT Converter

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

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reaConverter
Convert
CAT Files
Online

How to Convert .cat Files in Bulk

1. Install reaConverter

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

2. Select CAT Files

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

3. Start Conversion

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

Convert CAT on your PC

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.

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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.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on January 29, 2026
"reaConverter's automation tools have completely changed how I manage my projects. I often work with large batches of illustrations and used to spend hours converting and organizing them. Now, with Watch Folders, I just set the rules once and everything is handled automatically, exactly how I need it. This is pro-level automation made simple."
Chloe M.
Chloe M.
Freelance Illustrator
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User
"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."
Malik T. Martin
Malik T. Martin
Satisfied Customer
"I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!"
Mark T.
Mark T.
Satisfied Customer
"Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!"
Ben H.
Ben H.
Overwhelmed Office Hero
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User

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?

Copy metadata (EXIF, IPTC)Convert DICOM filesImage resizerChange format settingsChange DPI

What formats can I convert a CAT file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcm  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  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  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

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Explore our efficient CAT file converter that saves you time and effort by converting multiple .cat files into different formats.
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