What happens to transparent AVIF pixels?

JPEG cannot store transparency, so the selected background colour is painted behind the image before export.

Can I convert several files?

Yes. The parent converter supports batches and offers an individual download or one zip.

Does opening this page change my remembered format?

This page opens on JPEG while preserving your main-page format. Other setting changes leave that format alone; explicitly choosing a different Format remembers that choice.

AVIF to JPEG

Choose AVIF files and write JPEG copies locally. JPEG has no transparency, so the background colour is explicit, and every file stays on your device.

No files yetJPEG, 100%, #FFFFFF behind clear pixels

Convert AVIF pictures here

or drop up to 20 of them on this stage

Never uploadedNo account20 files at onceUp to 30 megapixels each

decoded in this tab

Format

Quality

Scale

Background

#FFFFFF

No files open yet. Choose up to 20 AVIF pictures, or drop them on the stage, and they are decoded here in this tab.

JPEG discards detail to get smaller and has no transparency, so clear pixels are filled with the background colour you pick. Nothing is sent anywhere: the decoder, the canvas and the zip all run in this tab. The tool remembers settings you change: format, scale, transparency, background colour and JPEG quality, and never a picture. Opening the JPEG page does not replace your remembered main-page format.

PNG is losslessafter resizing or background compositing
finished canvas pixels encoded without loss; file size varies
An animated AVIFstated before you convert
first frame only
The limitsper batch and per picture
20 files, 30 megapixels each

Converting, not shrinking. Your browser's own AVIF decoder does the reading, so nothing is uploaded. PNG keeps every pixel exactly in the finished canvas after chosen resizing or background compositing. Its lossless encoding can make it several times larger than the AVIF; size depends on the picture and encoding. An animated AVIF converts its first frame only, and a browser that cannot decode AVIF says so instead of returning a broken file.

Common questions

What happens to transparent AVIF pixels?: JPEG cannot store transparency, so the selected background colour is painted behind the image before export.
Can I convert several files?: Yes. The parent converter supports batches and offers an individual download or one zip.
Does opening this page change my remembered format?: This page opens on JPEG while preserving your main-page format. Other setting changes leave that format alone; explicitly choosing a different Format remembers that choice.

Your browser's own AVIF decoder does the reading, so nothing is uploaded. PNG keeps every pixel exactly in the finished canvas after chosen resizing or background compositing. Its lossless encoding can make it several times larger than the AVIF; size depends on the picture and encoding. An animated AVIF converts its first frame only, and a browser that cannot decode AVIF says so instead of returning a broken file.