Are my images uploaded when I convert to AVIF?

No. AVIF encoding runs in your browser with a local WASM library. Your files never leave your device.

What quality should I use for AVIF?

AVIF uses a different scale than JPEG or WebP. For photos, 40–60 is a good starting point for smaller files.

Yes. Upload up to 20 images at a time and download them individually or as a ZIP.

The browser downloads the AVIF encoder (~3 MB) once. After that, encoding runs locally and may take a few seconds per image.

Convert images to AVIF locally in your browser.

No upload. Your files stay on your device.

Private by design — your images are processed locally and never leave your device.

Drop images here

or click to upload · paste from clipboard

Supports JPG, PNG, WebP, AVIF, SVG, and HEIC · Up to 20 images at a time

Output Format: AVIF

Quality80%

AVIF quality uses a different scale than JPEG/WebP. For photos, try 40–60 for smaller files; 80+ often produces much larger output.

Max Size (optional, keeps aspect ratio)

Max Width (px)

Max Height (px)

Upload JPG, PNG, WebP, or AVIF files using the drop zone above.
Choose AVIF as the output format (already selected by default).
Wait for the AVIF encoder to load, then set quality — 40–60 works well for most photos.
Click Convert Images and download your AVIF files.
Download individual files or get them all as a ZIP.

Read our WebP vs AVIF guide to compare formats and browser support.

Are my images uploaded when I convert to AVIF?: No. AVIF encoding runs in your browser with a local WASM library. Your files never leave your device.
What quality should I use for AVIF?: AVIF uses a different scale than JPEG or WebP. For photos, <strong>40–60</strong> is a good starting point for smaller files.
Can I convert multiple images to AVIF at once?: Yes. Upload up to <strong>20 images</strong> at a time and download them individually or as a ZIP.
Why does the first AVIF conversion take longer?: The browser downloads the AVIF encoder (~3 MB) once. After that, encoding runs locally and may take a few seconds per image.