Convert ST5 to APNG

Bulk ST5 to APNG conversion with consistent results. Set it up once, process thousands of files with the same quality every time.

Manual ST5 to APNG conversion wastes hours. reaConverter automates the process — just add files and click Convert. Everything happens offline on your computer — no uploads, no cloud risks.

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ST5 to APNG
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How to Convert Multiple ST5 Files to APNG?

1. Download and Install reaConverter

Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required.

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Install reaConverter

2. Load your ST5 files

Open reaConverter and add your ST5 files. You can load individual files, entire folders, or even nested subfolders.

Drop your ST5 files into the window or use File menu to browse and select folders.

Load your ST5 files into reaConverter

3. Select APNG as output format

Choose APNG as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select APNG as output format

4. Start ST5 to APNG 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 APNG files in the output folder. Click 'Show converted files' to open it directly.

ST5 to APNG Converter

reaConverter offers the fastest, simplest solution for converting your ST5 files into APNG in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting ST5 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 25, 2026
"We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works."
David R.
David R.
IT Solutions Architect
"So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!"
Kenneth D. Carter
Kenneth D. Carter
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
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
DeShawn M. Thompson
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
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
Ava Thomas
Happy User

ST5 to APNG Conversion: FAQ

What are ST5 files?

The ST5 extension is attached to RAW images shot with the ST-X model of SBIG CCD cameras. The format is also known as Santa Barbara Instruments Astronomical Image and SBIG represents a brand of specialized imaging cameras, mostly used in astronomy, color photometry, medical imaging and a few other scientific and industrial sectors. As part of these niche uses, ST5 images are considered rare and are probably difficult to open using regular image viewers.

What are APNG files?

The APNG format is also known as "animated PNG" and is made up of a series of PNG files of the same size that are connected as an animation. APNG files are similar in function with GIFs, but they support better quality images and transparency.

Can reaConverter convert ST5 to APNG?

Yes! reaConverter instantly converts .st5 to .apng 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 ST5 to APNG online?

If you only need to convert a few ST5 files to APNG format, feel free to try our free online free online ST5 to APNG converter — perfect for small batches with no installation needed!

How can I turn ST5 files into APNG on my computer?

The best way to change ST5s to APNGs 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 ST5 to APNG.

How can I automate ST5 to APNG 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 ST5 files to APNG using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line st5 to apng converter for batch processing.

What else can I do with reaConverter?

Convert RAW formatsConvert CAD formatsSet picture bit depthConvert DICOM imagesResize images

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