Convert ST5 to WEBP

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

Looking to change ST5 files to WEBP format? reaConverter makes it simple — add your files, select output format, and convert entire folders in one click. Runs entirely on your hardware for maximum speed — no waiting for uploads or server queues.

Download
reaConverter
Convert
ST5 to WEBP
Online
Convert

How to Convert Multiple ST5 Files to WEBP?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting ST5 files in under two minutes.

reaConverter logo
Install reaConverter

2. Load your ST5 files

Start reaConverter and add your .st5 files. The software processes everything locally, so your files never leave your computer.

Use drag-and-drop, folder browser, or right-click conversion from Explorer.

Load your ST5 files into reaConverter

3. Select WEBP as output format

Select WEBP from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select WEBP as output format

4. Start ST5 to WEBP conversion

Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Start Conversion

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your WEBP output.

ST5 to WEBP Converter

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

Download Free Trial

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 13, 2026
"I download memes and graphics all the time, but half are WEBP files that won’t open in my editing apps. reaConverter fixes this in two clicks. Now I can actually use the funny cat pics I save!"
Olivia R.
Olivia R.
Social Media Manager
"This software is MAGIC! ✨ Had a monster 7GB WebP archive—online tools wanted a WEEK. reaConverter ate it for dinner and spit out perfect JPGs by bedtime. 😍"
Emma Taylor
Emma Taylor
Satisfied Customer
"At our print shop, reaConverter has eliminated 90% of our format headaches. Whether it's WebP, HEIC, or proprietary formats, it handles everything offline — critical when processing sensitive client files."
David M. Johnson
David M. Johnson
Satisfied Customer
"Managing product images for our online store requires consistent formatting across thousands of SKUs. reaConverter enables us to automatically convert various source formats to standardized WebP files with optimized compression. The preset system ensures all images maintain our required 1200x1200 pixel dimensions while reducing file sizes by an average of 65%, significantly improving our site's loading speed."
Thomas Chen
Thomas Chen
E-commerce Manager
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User

ST5 to WEBP 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 WEBP files?

WebP is an image file format released by Google in 2010 with the aim of challenging the leading positions of JPG and PNG in the domain of storing and transferring digital images. The purpose of the WebP format is to improve the speed of browsing by offering the same quality as JPEG or PNG, but in a smaller size. WebP images can contain both lossy and lossless compression. They continue, however, to be incompatible with some image viewers and browsers, and are often described by analysts as "work in progress" — a format that still needs to be developed.

Can reaConverter convert ST5 to WEBP?

Yes! reaConverter instantly converts .st5 to .webp 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 WEBP online?

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

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

The best way to change ST5s to WEBPs 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 WEBP.

How can I automate ST5 to WEBP 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 WEBP using the command prompt?

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

What else can I do with reaConverter?

Convert vector imagesConvert picture color spaceCopy IPTC dataConvert RAW photo formatsConvert DICOM images

Find out more

Get advanced software for file conversion, processing, and editing, giving you complete, precise control over your work.
Download
reaConverter
Buy Now
reaConverter software