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.

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

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

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

Batch processing supported

Drop images here

or click to upload · paste from clipboard

Supports JPG, PNG, WebP, AVIF, SVG, HEIC, and ICO · 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)

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.