Convert STI to FAX

STI to FAX with professional color control. reaConverter batch converts RAW files with options for color balance and output quality.

Online converters too slow for your STI files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. RAW files convert with full color and quality control — no degradation.

1. Download and Install reaConverter

Install reaConverter for fast STI conversion. Quick setup, then you're ready to process entire photo shoots. reaConverter also includes editing tools: resize, crop, rotate, and more.

Install reaConverter

2. Load your STI files

Open reaConverter and import your .sti files. No file limits, no slowdowns. Add as many as you need.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

3. Select FAX as output format

Pick FAX as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

4. Start STI to FAX conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

When finished, your new .fax files will be waiting in the destination folder.

STI to FAX Converter

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

Download Free Trial

Do more with your images

Converting STI images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

Image editing tools

User Reviews

Average User Rating:
Last updated on January 25, 2026

"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

Marketing Agency CEO

"I was drowning in mismatched file formats until I found reaConverter. The one-click conversion and editing tools simplified everything, and the pricing is reasonable for small businesses. Now I spend less time troubleshooting and more time growing my brand!"

Emily K.

E-commerce Entrepreneur

"This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"

Kevin Harris

Happy User

"Finally an app that actually opens my weird files! Saves me from format frustration daily."

Kyle Brooks

Happy User

"This converter delivers exceptionally quick format conversions with reliable results every time."

Brian White

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

Healthcare IT

STI to FAX Conversion: FAQ

Can reaConverter convert STI to FAX?

Yes! reaConverter instantly converts .sti 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.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert STI to FAX online?

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

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

The best way to change STIs 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 STI to FAX.

How can I automate STI 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 STI 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 sti to fax converter for batch processing.

What else can I do with reaConverter?

Convert PDF files Watermark photos Convert vector files Convert picture color space Change file date