ATK Converter

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

Download
reaConverter
Convert
ATK Files
Online

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.
reaConverter logo
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.

Download reaConverter

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 July 01, 2026
"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
"Creating marketing materials for various platforms requires multiple file versions from single sources. reaConverter's workflow automation lets us generate PNG, JPEG, and SVG variants from AI and PSD files simultaneously. The color profile management ensures brand consistency across all outputs, and the processing speed allows for last-minute changes without delaying deadlines."
Rebecca Turner
Rebecca Turner
Marketing Agency CEO
"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User
"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
"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

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  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 ATK conversion

Convert .atk 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.
Download
reaConverter
Buy Now
Free trial · Windows 10/11 · 64-bit · v8.0.241 · Files never leave your computer
reaConverter software