Convert KOA to AVIF

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

Batch KOA to AVIF 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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KOA to AVIF
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How to Convert Multiple KOA Files to AVIF?

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 KOA files

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

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

Load your KOA files into reaConverter

3. Select AVIF as output format

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

Select AVIF as output format

4. Start KOA to AVIF 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 .avif files in the output location. The log shows details for each conversion.

KOA to AVIF Converter

reaConverter offers the fastest, simplest solution for converting your KOA 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 KOA 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
"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
Derek Snyder
Satisfied Customer
"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
Amy Li
Content Creator
"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

KOA to AVIF Conversion: FAQ

What are KOA files?

The KOA format is associated with Koala Paint or Koala Painter, a very basic drawing program used during the 1980s on the Koala Pad. The latter was an incipient form of graphics tablet which attached to some models of home computers that were popular at the time, including the Commodore 64 and Atari. The KOA format is currently considered archaic and rare.

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 KOA to AVIF?

Yes! reaConverter instantly converts .koa 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 KOA to AVIF online?

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

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

The best way to change KOAs 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 KOA to AVIF.

How can I automate KOA 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 KOA 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 koa to avif converter for batch processing.

What else can I do with reaConverter?

Convert DICOM filesResize pictureChange format settingsChange DPIConvert CAD formats

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