ATK Converter

Offline ATK converter with professional output. reaConverter keeps your files secure while you work.

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ATK Files
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How to Convert .atk Files in Bulk

1. Install reaConverter

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

2. Select ATK Files

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

3. Start Conversion

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

Convert ATK on your PC

For quick and effortless ATK 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 ATK 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 December 28, 2025
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User
"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"
Sarah Lane
Sarah Lane
Satisfied Customer
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results."
Jamal Bailey
Jamal Bailey
Satisfied Customer
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
DeShawn M. Thompson
Happy User

ATK files: Frequently Asked Questions

What are ATK files?

Developed as part of the Andrew Project introduced at Carnegie Mellon University in the early 1980s, ATK is a type of raster image file format linked to Andrew Toolkit. In addition to enhancing accessibility to tools for distributing documents embedded with objects, the venture led to the generation of various other computing infrastructure tools, marking a noteworthy milestone at the time.

Can reaConverter open ATK files?

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

How do I change ATK to another format?

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

Can I convert ATK online?

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

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

The best way to convert ATK 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 ATK.

How can I automate ATK 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 ATK 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 atk converter.

What else can I do with reaConverter?

Change format settingsChange DPIConvert DICOM filesChange photo sizeConvert vector files

What formats can I convert a ATK 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 ATK file converter that saves you time and effort by converting multiple .atk files into different formats.
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