Convert RAST to FAX

Convert RAST to FAX without quality loss. reaConverter gives you full control over resolution, compression, and output settings.

Batch RAST to FAX conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required — convert anywhere, anytime.

Download
reaConverter
Convert
RAST to FAX
Online
Convert

How to Convert Multiple RAST Files to FAX?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

reaConverter logo
Install reaConverter

2. Load your RAST files

Load your RAST files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.

Select RASTs from a folder or drag-and-drop them directly into the reaConverter window.

Load your RAST files into reaConverter

3. Select FAX as output format

Choose FAX for output and set your save location. reaConverter lets you customize quality and apply edits before conversion.

Select FAX as output format

4. Start RAST to FAX conversion

Press the Convert button and reaConverter takes care of the rest. Processing time depends on file size and volume.

Start Conversion

After processing, find all your new .fax files in the output location. The log shows details for each conversion.

RAST to FAX Converter

reaConverter offers the fastest, simplest solution for converting your RAST files into FAX in seconds - all files processed on your PC for maximum privacy and speed.

Download Free Trial

Do more with your files

Converting RAST files for use in a workflow? 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 25, 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
"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
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
Happy User
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Logan B.
Satisfied Customer
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User
"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
Helen Evans
Satisfied Customer

RAST to FAX Conversion: FAQ

What are RAST files?

RAST is a Sun Raster image format developed for Sun UNIX platforms. These types of operating systems were launched by Sun Microsystems for use on both workstations and server computer systems. As opposed to RAS, which is also a Sun Raster format, RAST images are less compatible with image viewers outside the Sun UNIX platforms. They support various types of image colour depths, from monochrome to 32-bit TrueColor and are mostly designed for UNIX users.

What are FAX files?

FAX files contain incoming or outgoing fax images created using specialized software, usually as part of a fax machine or a computer with a fax modem. This format is a fixed width Group 3 TIFF saved in black&white colors.

Can reaConverter convert RAST to FAX?

Yes! reaConverter instantly converts .rast to .fax with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert RAST to FAX online?

If you only need to convert a few RAST files to FAX format, feel free to try our free online free online RAST to FAX converter — perfect for small batches with no installation needed!

How can I turn RAST files into FAX on my computer?

The best way to change RASTs to FAXs on your PC is to install 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 RAST to FAX.

How can I automate RAST to FAX files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert RAST files to FAX using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line rast to fax converter for batch processing.

What else can I do with reaConverter?

Change format settingsChange DPIConvert DICOM filesChange photo sizeConvert vector files

Find out more

Get advanced software for file conversion, processing, and editing, giving you complete, precise control over your work.
Download
reaConverter
Buy Now
reaConverter software