Convert STI to PDF

STI to PDF conversion for document workflows. reaConverter processes files in batch — extract pages, adjust quality, convert entire folders.

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. PDF conversion includes control over pages, resolution, and output format.

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How to Convert Multiple STI Images to PDF?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately. Apply image edits like resize, crop, or color adjustment while converting.

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Install reaConverter

2. Load your STI files

Load your STI files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.

Drop your STI files into the window or use File menu to browse and select folders.

Load your STI files into reaConverter

3. Select PDF as output format

Select PDF from the format list. Fine-tune color space, compression, and quality before converting your RAW photos.

Select PDF as output format

4. Start STI to PDF conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your PDF files in the output folder. Click 'Show converted files' to open it directly.

STI to PDF Converter

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

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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.

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User Reviews

Average User Rating:
Last updated on January 16, 2026
"Convert PDFs instantly via right-click context menu — no need to open extra apps!"
Jessica M.
Jessica M.
Satisfied Customer
"I've been searching for reliable software like this forever — finally found one that works smoothly without lag. After installing, I converted PDFs to JPEGs with perfect quality retention. Exactly what I needed!"
Richard Jones
Richard Jones
Digital Marketing Manager
"PDF → JPG in seconds online—so easy! 👏 Why complicate things with extra software?"
Zachary D.
Zachary D.
Satisfied Customer
"This article was a lifesaver! I quickly converted multiple JPG files to PDF with ease. Other sites I visited only offered downloadable programs, but your online converter delivered instant results — way more efficient!"
Luis Perez
Luis Perez
Happy Online User
"Our legal team processes hundreds of documents daily. reaConverter automates everything — PDF conversion, documents, image compression, you name it. It’s reliable, fast, and a huge time-saver."
Att. David K. Brooks
Att. David K. Brooks
Legal Consultant
"After testing numerous converters, this is the first solution that maintains 100% image quality during PDF to JPG conversion while operating seamlessly — no crashes or slowdowns even with batch processing."
Kenneth H.
Kenneth H.
Satisfied Customer

STI to PDF Conversion: FAQ

What are STI files?

STI is a format associated with shooting in RAW mode with Sinar cameras, and has a similar function to the CS1 format. Well-known among photography aficionados, the Sinar brand was founded in the 1940s in Switzerland and has ever since produced several models of large and medium sized cameras. Most of these cameras are conceived as integrated systems and include parts that can be changed between different models. Shooting STI images with a Sinar camera results in creating RAW images that can be processed with a specialized editing software so as to create high quality images, which are more suitable for print than other compressed formats, such as JPEG.

What are PDF files?

PDF (Portable Document Format) is one of the most popular formats used for storing document files which include both text and graphics. As opposed to other formats with a similar function, PDFs can be easily transferred between different applications and different operating systems, and generally don't have a very large size. Moreover, they can offer decent image quality in a compressed format and can be secured with passwords or watermarks.

Can reaConverter convert STI to PDF?

Yes! reaConverter instantly converts .sti to .pdf 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 PDF online?

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

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

The best way to change STIs to PDFs 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 PDF.

How can I automate STI to PDF 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 PDF using the command prompt?

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

What else can I do with reaConverter?

Convert RAW photo formatsChange file dateConvert vector filesConvert picture color spaceConvert PDF files

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