Converting JPG to AVIF is the most aggressive easy saving you can make on a photo-heavy site. Typical photos drop to around half their JPG size at matched visual quality. The trade-off is time: AVIF encodes slowly, and here it runs on your own processor.
The output is set to AVIF at quality 60. If you also want WebP versions for a picture element, run the same set again on the JPG to WebP page.
How to convert JPG to AVIF
Add JPG photos
Start from the highest-quality JPG you have.
Compare at quality 60
Look at skin, sky and fine texture. AVIF tends to smooth fine grain rather than block it.
Serve with a fallback
Use a picture element with the AVIF first and the JPG as the fallback for old clients.
Reasons to convert
Faster largest image
Halving the weight of a hero photo directly shortens the time before it appears.
Less bandwidth
For sites paying for traffic, AVIF can noticeably cut the image bill.
Fine grain and film photos
AVIF can smooth away film grain and fine noise that some photographers want to keep. For those images, raise the quality to 70–80 or use WebP.
JPG, WebP or AVIF
| Format | Size | Encode speed |
|---|---|---|
| JPG | Largest | Fast |
| WebP | Smaller | Fast |
| AVIF | Smallest | Slow |
JPG to AVIF questions
How much smaller is AVIF than JPG?
It varies by photo; around half the size at a similar look is common. The result card shows the exact saving for each file.
Why is the AVIF conversion slow?
AV1 encoding is computationally heavy, and it runs in your browser. Larger photos take longer.
Can I upload AVIF to social media?
Support is patchy. Use JPG for social uploads and AVIF for your own website.
Is AVIF supported in Safari?
Yes, current Safari on iPhone and Mac displays AVIF.