Convert STX to AVIF

By using our efficient and user-friendly STX to AVIF converter, you can save yourself from the tiresome process of manually converting numerous .stx files into avif format for hours.

reaConverter is an offline file converter software that allows your to convert from STX file format to AVIF format.

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How to Convert Multiple STX Files to AVIF?

1. Download and Install reaConverter

reaConverter is quick to download, install and launch. This standalone software is extremely efficient in managing a wide range of batch conversions. reaConverter is incredibly powerful and boasts an extensive variety of features.

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Install reaConverter

2. Load your STX files

Start reaConverter and load all the .stx files you intend to convert into .avif. The software supports multiple STX conversion and processes all files locally on your computer.

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

Load your STX files into reaConverter

3. Select AVIF as output format

Pick the AVIF as output format and choose the destination folder where you want to save new .avif files.

Select AVIF as output format

4. Start STX to AVIF conversion

Then simply press Convert button and your conversion will begin in no time!

Screenshot

Once the conversion is complete, you can find your AVIF files in the destination folder you selected.

STX to AVIF Converter

reaConverter offers the fastest, simplest solution for converting your STX files into AVIF 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 May 24, 2025
"Twitch thumbnails keep saving as AVIF and my editing software freaks out. reaConverter swaps them to JPEG instantly. Now I can actually post my ‘🔥HOT TAKES🔥’ without crying over file errors."
⭐⭐⭐⭐⭐
Amy Li
Content Creator
"Google Photos auto-saved my pics as AVIF files that won’t open anywhere. reaConverter rescued 3 years of memories AND kept the quality. Take that, ‘innovation’!"
⭐⭐⭐⭐⭐
Derek Snyder
Satisfied Customer
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
⭐⭐⭐⭐⭐
DeShawn M. Thompson
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
⭐⭐⭐⭐⭐
Lin Zhang
Happy User
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
⭐⭐⭐⭐⭐
Ava Thomas
Happy User
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
⭐⭐⭐⭐⭐
Elena Anderson
Happy User

STX to AVIF 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 AVIF files?

AVIF is a new image format launched at the end of 2020. AV1 Image File Format was developed by the Alliance for Open Media in collaboration with Netflix, Google and Cisco. This format was created to be an open-sourced and royalty-free image format with a super-compression efficiency. Multiple graphics compression tests show that the .avif format outperforms the JPEG, PNG and WebP image formats for its image quality to compressed file size ratio.

Can reaConverter convert STX to AVIF?

Yes! reaConverter instantly converts .stx to .avif 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 AVIF online?

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

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

The best way to change STXs to AVIFs 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 AVIF.

How can I automate STX to AVIF 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 AVIF using the command prompt?

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

What else can I do with reaConverter?

Convert CAD formatsSet picture bit depthConvert GIS filesConvert DICOM imagesChange picture size

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