What is the difference between PNG and AVIF?

PNG is lossless and universal. AVIF is a modern lossy format that produces much smaller files. PNG is best for editing and archiving; AVIF is best for web delivery.

Will converting PNG to AVIF lose quality?

AVIF is lossy by default, so some fine detail may be discarded. At typical quality settings, the difference is invisible to the human eye at normal viewing sizes.

Is AVIF smaller than PNG?

Yes, typically 50-70 percent smaller at equivalent visual quality. A 500 KB PNG might become a 150 KB AVIF. This makes AVIF the best choice for serving images on websites.

Does AVIF support transparency?

Yes. AVIF supports full alpha transparency, so a transparent PNG produces a transparent AVIF. This is a key advantage AVIF has over JPEG.

Is AVIF supported by browsers?

Yes. AVIF is supported by Chrome 85+, Firefox 93+, Safari 16.1+, and Edge 121+. That covers over 95 percent of global web traffic.

Should I use AVIF or WEBP?

AVIF typically produces files 20-30 percent smaller than WEBP at equivalent quality. Both support transparency and animation. AVIF is the more modern, more efficient choice.

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About PNG to AVIF conversion

PNG (Portable Network Graphics) was created in 1996 as an open, lossless image format. It preserves every pixel exactly, supports transparency, and is universally supported. PNG is the standard for logos, screenshots, and web graphics — but files are often larger than they need to be.

AVIF (AV1 Image File Format) was introduced in 2019 by the Alliance for Open Media. It uses the AV1 video codec to compress images at roughly 50 percent smaller than WEBP and up to 70 percent smaller than JPEG. AVIF is the most efficient modern format for web delivery.

Why Convert PNG to AVIF?

If you're serving PNG images on a website, converting to AVIF can cut file sizes by 50-70 percent without visible quality loss. Smaller files mean faster page loads, better Core Web Vitals scores, and improved SEO rankings. AVIF is supported by all modern browsers.

PNG vs AVIF — The Comparison

PNG is lossless and universal; AVIF is lossy (usually) and modern. PNG is best for editing, archiving, and universal compatibility. AVIF is best for web delivery where file size matters most. Most modern image pipelines use AVIF for serving and keep PNG as the source.

Transparency

Both PNG and AVIF support full alpha transparency. Converting a transparent PNG to AVIF preserves the transparency — this is one of AVIF's key advantages over JPEG.

Browser Support

AVIF is supported by Chrome 85+, Firefox 93+, Safari 16.1+, and Edge 121+. That's over 95 percent of global web traffic. For legacy browsers, keep a PNG fallback using the picture tag.

How to Convert PNG to AVIF

Upload your PNG file using the tool on this page. ConvertFileBox processes it server-side and provides an .avif download instantly. No signup, no file limits. Files are automatically deleted after 1 hour.

Also available: AVIF to PNG Converter

PNG vs AVIF: at a glance

Property	PNG	AVIF
Compression	lossless	both
Transparency	Yes	Yes
Animation	No	Yes
Color depth	up to 48-bit	up to 12-bit
Created by	PNG Development Group	Alliance for Open Media
Introduced	1996	2019
Best for	logos, screenshots, web graphics, icons	next-gen web images, HDR photos, bandwidth savings

PNG uses lossy compression; AVIF uses lossless. Converting won't restore lost detail, but it prevents further quality degradation during editing and archiving.