WebP to AVIF
AVIF is a newer format than WebP and can squeeze the same image into an even smaller file, with transparency intact. Convert your WebP images to AVIF right in your browser — nothing is uploaded and nothing is stored.
Your images are converted in your browser and never uploaded. Nothing is stored.
AVIF encoding takes longer than a regular conversion — that's normal.
How it works
- 1
Add one WebP or a whole batch
- 2
Each is encoded to AVIF in your browser — this takes longer than a normal conversion
- 3
Download each AVIF, or all of them as a ZIP
Why choose us
- Private by design — your images are converted in the browser and never uploaded to a server
- AVIF is usually smaller than WebP at a similar quality, and keeps transparency
- Convert a whole batch at once and download them together as a ZIP
- Free, no sign-up, no watermark
Frequently asked questions
Are my images uploaded when I convert them?
No. The conversion runs entirely in your browser, so your images stay on your device and are never sent to or stored on our server.
Why does the conversion take a while?
AVIF uses AV1 compression, which is heavy to encode. Doing it in the browser is slower than a plain format change — a large image can take several seconds. The smaller result is the trade-off.
Is AVIF really smaller than WebP?
Usually yes, at a similar quality, though the gap is smaller than against JPG and depends on the image. Both are efficient modern formats.
Do all browsers support AVIF?
Every current browser displays AVIF. Some older software doesn't, so keep a WebP copy if you need maximum compatibility.
Is converting WebP to AVIF free?
Yes — completely free, with no account, no watermark and no limit on how often you use it.
Related tools
- Compress imageMake JPG, PNG and WebP images smaller in your browser — drop in one or a whole batch and download each, or all of them as a ZIP. Your photos never leave your device. Free, no sign-up.
- JPG to AVIFConvert JPG images to AVIF — a modern format that's often 30–50% smaller — right in your browser. Your files never leave your device. Free, no sign-up.
- PNG to AVIFConvert PNG images to AVIF — a modern format that's much smaller and keeps transparency — right in your browser. Your files never leave your device. Free, no sign-up.