Convert STX to PNG

Convert STX to PNG without uploading files anywhere. reaConverter works entirely on your PC — fast, private, and handles thousands of files at once.

Batch STX to PNG 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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How to Convert Multiple STX Files to PNG?

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.

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Install reaConverter

2. Load your STX files

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

Select STXs from a folder or drag-and-drop them directly into the reaConverter window.

Load your STX files into reaConverter

3. Select PNG as output format

Choose PNG for output and set your save location. reaConverter lets you customize quality and apply edits before conversion.

Select PNG as output format

4. Start STX to PNG conversion

Press the Convert button and reaConverter takes care of the rest. Processing time depends on file size and volume.

Start Conversion

After processing, find all your new .png files in the output location. The log shows details for each conversion.

STX to PNG Converter

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

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Do more with your files

Converting STX 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 20, 2026
"For professional-grade PNG to WebP conversions, avoid online tools with restrictive quotas. reaConverter delivers batch processing at local disk speeds – the only viable option for frequent use."
Matthew Hernandez
Matthew Hernandez
Satisfied Customer
"I design stickers but could never cleanly resize my PNG logos without pixelation. reaConverter’s PNG-to-SVG tool keeps everything sharp—even when scaling up. My Etsy shop looks way more professional now!"
Lisa Palmer
Lisa Palmer
Digital Artist
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Logan B.
Satisfied Customer
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User
"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
Helen Evans
Satisfied Customer
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User

STX to PNG Conversion: FAQ

What are STX files?

STX files represent RAW images created with SBIG CCD cameras. They are part of a group of formats known as Santa Barbara Instruments Astronomical Images, also including ST5, ST6, ST7 and ST8. Apart from astronomy, SBIG cameras can also be used in medical imaging, color photometry and a few other scientific and industrial sectors. All formats in the group are considered specialized and rare, so opening STX files might be possible only after conversion to more widely available extensions.

What are PNG files?

The PNG (Portable Network Graphics) file format was designed in the mid-1990s as an improved alternative to the previously existing JPG and GIF formats, and as an extension which would be particularly web-friendly. In time, PNG files have gained a wide popularity and are highly appreciated at the moment for their ability to provide a lossless compression of images, which translates in high-quality and detailed renderings.

Can reaConverter convert STX to PNG?

Yes! reaConverter instantly converts .stx to .png 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 STX to PNG online?

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

How can I turn STX files into PNG on my computer?

The best way to change STXs to PNGs 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 STX to PNG.

How can I automate STX to PNG 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 STX files to PNG using the command prompt?

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

What else can I do with reaConverter?

Convert DICOM filesResize pictureChange format settingsChange DPIConvert vector files

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