How do I convert multiple J2K files to AVIF?

The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple J2K files as once.

At the same time, it will allow you to apply a wide range of image editing options during conversion.

Download and Install reaConverter

reaConverter is quick to download, install and launch, and you don't need to be an IT specialist in order to understand in a few minutes how it operates.

Install reaConverter

Load J2K Files

Start reaConverter and load all the .j2k files you intend to convert into .avif because, as opposed to most free online converters, reaConverter supports batch conversion. So you can save the time and energy you would lose with doing repetitive operations.

Select J2Ks from a folder or by drag-and-dropping them directly into the reaConverter window.

Choose Output Folder

Go to the Saving options tab and decide where you want to save new .avif files. You can also spend a few more moments to apply additional editing to the images prepared for conversion.

Select AVIF as Output Format

Then pick the AVIF as output format. To help you do this, a series of buttons is conveniently placed at the bottom of the reaConverter window, so you can simply press on the one you need or click + Plus button to add new options.

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

Video tutorial

Online J2K to AVIF converter

reaConverter is a great software for efficiently managing a large amount of files, on a frequent basis. However, if you are planning to convert only a few J2K files and only once in a while, then you can also try reaConverter Online.

Command-line interface

Advanced users can convert J2K to AVIF via command-line interface in manual or automated mode. You are welcome to contact our technical support when you have any questions about reaConverter.