100% Secure & Private
ST5 Converter
Turn ST5 files into JPG, PNG, PDF and 800+ other formats. reaConverter handles bulk conversion with consistent quality.
How to Convert .st5 Files in Bulk
1. Install reaConverter
2. Select ST5 Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless ST5 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.
Extra Tools
Do more with your files
Converting ST5 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.
User reviews
From those who tried it
Average User Rating:Last updated on July 31, 2026
Questions & Answers
ST5 files: Frequently Asked Questions
What are ST5 files?
The ST5 extension is attached to RAW images shot with the ST-X model of SBIG CCD cameras. The format is also known as Santa Barbara Instruments Astronomical Image and SBIG represents a brand of specialized imaging cameras, mostly used in astronomy, color photometry, medical imaging and a few other scientific and industrial sectors. As part of these niche uses, ST5 images are considered rare and are probably difficult to open using regular image viewers.
Can reaConverter open ST5 files?
reaConverter fully supports the ST5 file format – open, edit, and export ST5 files to any other popular file format with ease.
How do I change ST5 to another format?
reaConverter is a user-friendly tool for converting ST5 files. Once installed on your computer, it allows you to convert all your .st5 files at once with just a few clicks. You can even convert ST5 files directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert ST5 online?
If you only want to convert a few ST5 files, you are welcome to try our free online ST5 converter.
How can I turn ST5 files on my computer to another format?
The best way to convert ST5 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 ST5.
How can I automate ST5 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 ST5 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 st5 converter.
What else can I do with reaConverter?
Convert RAW photosChange format settingsCopy metadata (EXIF, IPTC)Convert medical imagesPicture resizer
What formats can I convert a ST5 file to?
Discover More
Beyond ST5 conversion
Convert .st5 files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
