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STI Converter
Convert STI RAW photos without losing quality. reaConverter batch processes entire shoots with consistent colour settings.
How to Convert .sti Photos in Bulk
1. Install reaConverter
2. Select STI Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless STI 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.
Edit & Enhance
Do more with your images
Converting STI images for use in a workflow? Touch up, transform, apply editing and effects to your images during conversion.
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.
User reviews
From those who tried it
Average User Rating:Last updated on June 26, 2026
Questions & Answers
STI images: Frequently Asked Questions
What are STI files?
Sinar cameras use the STI format for shooting in RAW mode, which serves a similar purpose as the CS1 format. Sinar is a well-known Swiss brand that has been producing various large and medium-sized camera models since the 1940s. These cameras are designed as integrated systems with interchangeable parts between different models. Shooting STI images with a Sinar camera produces RAW files that can be edited with specialized software to create high-quality images suitable for printing, unlike compressed formats like JPEG. This feature has made Sinar cameras popular among photography enthusiasts.
Can reaConverter open STI files?
reaConverter fully supports the STI image format – open, edit, and export STI files to any other popular file format with ease.
How do I change STI to another format?
reaConverter is a user-friendly tool for converting STI files. Once installed on your computer, it allows you to convert all your .sti files at once with just a few clicks. You can even convert sti images directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert STI online?
If you only want to convert a few STI images, you are welcome to try our free online STI converter.
How can I turn STI files on my computer to another format?
The best way to convert STI images 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 STI.
How can I automate STI 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 STI 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 sti converter.
What else can I do with reaConverter?
Convert CAD formatsSet file dateConvert raster to vectorSet picture bit depthConvert GIS files
What formats can I convert a STI file to?
Discover More
Beyond STI conversion
Convert .sti 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.
