STI Converter

Convert STI RAW photos without losing quality. reaConverter batch processes entire shoots with consistent color settings.

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reaConverter
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STI Files
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STIConverter

How to Convert .sti Photos in Bulk

1. Install reaConverter

Download reliable STI conversion software to convert multiple .sti files and folders in one go.
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Install reaConverter

2. Select STI Files

Select STIs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load STI files

3. Start Conversion

Click Convert to start the bulk conversion of all selected STI images. The process will begin right away.
reaConverter - Start STI conversion

Convert STI on your PC

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.

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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.

Image editing tools
Image editing

User Reviews

Average User Rating:
Last updated on February 01, 2026
"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."
Malik T. Martin
Malik T. Martin
Satisfied Customer
"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
"Converts files in seconds! Finally a tool that's both fast and simple to use."
Wei Chen
Wei Chen
Happy User
"Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!"
Ben H.
Ben H.
Overwhelmed Office Hero
"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"
Sarah Lane
Sarah Lane
Satisfied Customer
"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.
Satisfied Customer

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 picture bit depthConvert Gerber imagesCrop fileCopy EXIF data

What formats can I convert a STI file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcm  dcx  dds  dgn  dis  dng  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

Discover more

Explore our efficient STI file converter that saves you time and effort by converting multiple .sti files into different formats.
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