WEBP → AVIF Converter

Drag & Drop your .webp file here, or pick a file below. Nothing is uploaded.

Output width (px)

If only width is set, height is computed from aspect ratio.

Output height (px)

If only height is set, width is computed from aspect ratio.

Scale (x)

Used when width/height are blank. Multiplies the original size.

AVIF quality

0-1 (browser may map this to encoder-specific settings).

Load a WEBP and convert to AVIF here.

Original size:

Output size:

WEBP → AVIF - Quick Cheat Sheet

Privacy: Everything runs in your browser. Files are not uploaded.
Quality: AVIF is highly efficient. Start around 0.90-0.95 for photos; lower for illustrations to shrink size.
Sizing: Set width or height (or both). If blank, the tool uses original size times Scale.
Alpha: AVIF supports transparency. This tool preserves alpha automatically.
Color/metadata: Canvas re-encode may drop some metadata and profiles. If ICC/color accuracy matters, verify results.
Support: AVIF encoding via toBlob('image/avif') depends on your browser. If unsupported, you'll see a warning.

How sizes are chosen