Convert to AVIF Online • Compress Images • MConverter

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What is an AVIF file?

File extension	.avif
Category	Image file formats
Developed by	AOMedia (Alliance for Open Media)
Mime type	image/avif

Format description

The AV1 Image File Format (AVIF) is a new format which promises better compression and smaller file sizes than JPEG, PNG, WebP, and all other current image formats on the web. Based on the generic HEIF image format, AVIF supports alpha transparency, HDR, lossy and lossless compression. AVIF is already being used by Netflix and Microsoft.

Which browsers support AVIF and since when?

In 2024, all major browsers can render AVIF images. Support in Google Chrome and Chromium-based browsers (like Microsoft Edge, Brave, and Opera) has landed in late August 2020. Firefox can display AVIF images from version 93, released in October 2021. Apple's Safari can finally recognize and show AVIF images starting with iOS 16, released in September 2022.

Common questions about converting to AVIF

What settings does MConverter use by default for the image quality?

MConverter's AVIF encoder uses a Constant Rate Factor (CRF) of 10, so that there is no noticeable reduction in image quality while keeping the file size as small as possible.

How to free up space when I have lots of photos I don't want to delete?

Use MConverter to convert your images to AVIF. It's a newer format which uses more efficient compression.
This way, your photos will take up less space, while their quality remains essentially identical as before.
After you have downloaded your converted photos, you can delete the original image files from your phone or computer, and enjoy the extra free space.
Later, when you wish to view your old photos, you may convert them to PNG without losing quality, or to JPG.