UNI Converter

UNI to any format, in batch and offline. reaConverter gives you full control over quality and output settings.

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reaConverter
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UNI Files
Online

How to Convert .uni Files in Bulk

1. Install reaConverter

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

2. Select UNI Files

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

3. Start Conversion

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

Convert UNI on your PC

For quick and effortless UNI 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 UNI 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 May 27, 2026
"Converts files in seconds! Finally a tool that's both fast and simple to use."
Wei Chen
Wei Chen
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User
"Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!"
Richard E. Miller
Richard E. Miller
Satisfied Customer
"We receive artwork in all kinds of formats from clients. reaConverter takes care of converting them all to print-ready specs automatically using Watch Folders. It reduces errors, saves us time, and has improved our turnaround time with customers. Incredibly powerful software."
Michael D.
Michael D.
Print Shop Owner
"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
"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

UNI files: Frequently Asked Questions

What are UNI files?

UNI is a rare image format associated with Brother fax machines. Brother is a Japanese brand with a long history in manufacturing electronical equipment for the printing and advertising industry, as well as sewing and embroidering. A UNI file most likely contains the image of a document that has been sent or received via a Brother fax machine. The format is now considered obsolete.

Can reaConverter open UNI files?

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

How do I change UNI to another format?

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

Can I convert UNI online?

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

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

The best way to convert UNI 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 UNI.

How can I automate UNI 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 UNI 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 uni converter.

What else can I do with reaConverter?

Convert PDF filesWatermark photosConvert DICOM filesResize imageConvert Gerber files

What formats can I convert a UNI 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 UNI conversion

Convert .uni 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.
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Free trial · Windows 10/11 · 64-bit · v8.0.240 · Files never leave your computer
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