Convert ST6 to ICO

ST6 to ICO conversion that keeps your files private. reaConverter runs offline on your computer with full batch processing support.

Batch ST6 to ICO conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required — convert anywhere, anytime.

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ST6 to ICO
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How to Convert Multiple ST6 Files to ICO?

1. Download and Install reaConverter

Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required.

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Install reaConverter

2. Load your ST6 files

Open reaConverter and import your .st6 files. No file limits, no slowdowns. Add as many as you need.

Drag files into the window, use the Add Files button, or select entire folders.

Load your ST6 files into reaConverter

3. Select ICO as output format

Select ICO as target format and pick where to save results. You can keep default settings or fine-tune the output.

Select ICO as output format

4. Start ST6 to ICO conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Start Conversion

Conversion complete? Your ICO files are saved to the destination folder, ready to use.

ST6 to ICO Converter

reaConverter offers the fastest, simplest solution for converting your ST6 files into ICO in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting ST6 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
"We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works."
David R.
David R.
IT Solutions Architect
"So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!"
Kenneth D. Carter
Kenneth D. Carter
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"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.
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"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
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"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
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"After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need."
Walter Morgan
Walter Morgan
Satisfied Customer

ST6 to ICO Conversion: FAQ

What are ST6 files?

The ST6 format is part of a group of extensions called Santa Barbara Instruments Astronomical Images, also including ST5, ST7, ST8 and STX. All these types of files represent RAW images created using the SBIG CCD ST-X camera. This is a specialized brand used in some areas of astronomy, medical imaging or other scientific and industrial domains with similar needs.

What are ICO files?

ICO files contain the images used as icons for files, folders or programs on the Microsoft Windows platform. The icons appear on the desktop, in Windows Explorer or in the Start Menu and help identify each item. ICO images are generally of a small size, are scalable, and they can also serve as website logos or symbols that appear in the web browser next to the URL. The equivalent of ICO files on Mac computers is called ICNS.

Can reaConverter convert ST6 to ICO?

Yes! reaConverter instantly converts .st6 to .ico 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 ST6 to ICO online?

If you only need to convert a few ST6 files to ICO format, feel free to try our free online free online ST6 to ICO converter — perfect for small batches with no installation needed!

How can I turn ST6 files into ICO on my computer?

The best way to change ST6s to ICOs 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 ST6 to ICO.

How can I automate ST6 to ICO 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 ST6 files to ICO using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line st6 to ico converter for batch processing.

What else can I do with reaConverter?

Convert RAW photosConvert GIS filesSet manual file dateChange format settingsChange DPI

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