Free Online MKV to AVIF Converter

Use our free-to-use and fast MKV to AVIF file converter to expertly convert your MKV files perfectly into the AVIF file format, ready for further editing or use in your favorite AVIF file editing application. Our tool can also batch convert your MKV files, enabling you to convert up to 20 files in one go.

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your MKV file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted MKV file before this time.

Use the button above to select the MKV files you wish to upload; once selected, you can click the Upload button to start the conversion. Once all your files have been converted, you will be able to download your AVIF files either individually or all together in a compressed ZIP file.

How to Convert your MKV to AVIF Online?

Here are two simple steps to convert your MKV to AVIF using our fast and free MKV converter tool.

Upload your MKV file

Click the "Upload a MKV File" button, then select a MKV to upload. The maximum file size is 100MB.

Download your AVIF

Click the download link to receive your AVIF file.

Frequently Asked Questions

How can I convert my MKV file to AVIF?

First, click the "Upload..." button and select your MKV file to upload. Your MKV file will be uploaded to our servers. When the MKV to AVIF conversion has completed, you can download your AVIF file right away.

How long does it take to convert my MKV to AVIF?

We aim to process all MKV to AVIF conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the MKV to AVIF conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

File format information for MKV and AVIF

Full NameMatroska Multimedia Container
Mime Typevideo/x-matroska

An MKV file, or Matroska Video File, is an audio/video file format created to store multimedia data in a highly compressed format. The MKV format supports a wide variety of audio and video codecs and is a popular format for distributing video files.

The format itself is a container format, meaning it supports many different audio and video tracks, all using different codecs. Along with audio and video, other data, such as chapters, markers, sub-titles, and other useful data, can be stored within the file.

Support for editing MKV files is widespread, with most video editing applications able to open MKV files. Video playback software, however, can sometimes struggle to playback MKV files if they are not equipped with the correct codecs.

Full NameAV1 Image File Format
Mime Typeimage/avif
Opens WithPaint.Net

The AVIF file format is aimed at being a modern replacement for the popular JPEG image format. Developed by the Alliance for Open Media, AVIF is an advanced image file format that leverages the cutting-edge compression algorithms used by the AV1 video codec.

The aim of the format is to surpass the quality of the equivalent JPEG file while packing a smaller file size via the use of the AV1 compression algorithm. The aim of the compression algorithm, which is a lossy algorithm, is to reduce the file size by removing detail from the image that the eye would not normally notice, thus reducing the size of the final AVIF file.

Support for AVIF files is still growing, with many modern image editors able to read and write to the format. The latest versions of the most popular web browsers have also moved to support AVIF images, having seen the benefit to website developers of reduced image sizes and thus reduced bandwidth usage.

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