WebP vs AVIF

WebP is Google’s widely deployed image format - lossy or lossless - with fast encoding. AVIF compresses best but encodes slowly; WebP is faster and more universally supported - many sites ship both.

image format comparison

WebP.webp

WebP is Google’s widely deployed image format - lossy or lossless - with fast encoding.

Pros

Universal support in every modern browser
Fast encoding - much quicker than AVIF
Mature, stable, well-tested tooling

Cons

Worse compression than AVIF at equal quality
No 10-bit color or HDR support
An older design with less room to improve

AVIF.avif

AVIF (based on AV1) is the newer format with the best compression of any mainstream image codec.

Pros

Smallest file sizes of any mainstream format - often 20–50% smaller than WebP at equal quality
Supports 10-bit color, HDR, and animation
Open, royalty-free standard

Cons

Slow encoding - AVIF can take several times longer than WebP
Support is still limited in some browsers and editors
Less mature tooling

Which should you use?

WebP: Choose WebP when encoding speed matters or you need guaranteed browser support.

AVIF: Choose AVIF for bandwidth-critical image delivery where modern browsers cover your audience.

Convert between WebP and AVIF

Convert WebP to AVIF →Convert AVIF to WebP →

Free, runs in your browser - files are never uploaded.

Quick Answer

WebP and AVIF are both image formats with different trade-offs. AVIF compresses best but encodes slowly; WebP is faster and more universally supported - many sites ship both. Choose WebP when encoding speed matters or you need guaranteed browser support. Choose AVIF for bandwidth-critical image delivery where modern browsers cover your audience.

Key Facts

WebP: WebP is Google’s widely deployed image format - lossy or lossless - with fast encoding.
AVIF: AVIF (based on AV1) is the newer format with the best compression of any mainstream image codec.
WebP strengths: Universal support in every modern browser; Fast encoding - much quicker than AVIF; Mature, stable, well-tested tooling.
AVIF strengths: Smallest file sizes of any mainstream format - often 20–50% smaller than WebP at equal quality; Supports 10-bit color, HDR, and animation; Open, royalty-free standard.
WebP trade-offs: Worse compression than AVIF at equal quality; No 10-bit color or HDR support; An older design with less room to improve.
AVIF trade-offs: Slow encoding - AVIF can take several times longer than WebP; Support is still limited in some browsers and editors; Less mature tooling.
Both have lossy modes (and lossless ones); converting between them re-compresses the image and never restores what was discarded.
AVIF compresses best but encodes slowly; WebP is faster and more universally supported - many sites ship both.

Frequently Asked Questions

Which is better, WebP or AVIF?

AVIF compresses best but encodes slowly; WebP is faster and more universally supported - many sites ship both. Choose WebP when encoding speed matters or you need guaranteed browser support. Choose AVIF for bandwidth-critical image delivery where modern browsers cover your audience.

Is WebP lossless or lossy?

WebP is available in both lossless and lossy modes. AVIF is available in both lossless and lossy modes.

Can I convert WebP to AVIF without quality loss?

Both have lossy modes (and lossless ones); converting between them re-compresses the image and never restores what was discarded. You can convert either direction with the free tools linked on this page.

What happens to my file when I convert WebP to AVIF?

Both have lossy modes (and lossless ones); converting between them re-compresses the image and never restores what was discarded. Your original file is never modified - the converter downloads a new file.