Convert AVIF to WebP online

To convert AVIF to WebP, upload the AVIF file, start the conversion and download the result: Converter.now writes a WebP at quality 90. Both formats are lossy, so this adds a second round of compression; convert from the best original you have rather than an earlier export.

◈ Encrypted transfer◷ Short retention⊘ No watermark◎ Works on every device

AVIF to WebP at a glance

Converts: AV1 Image File → WebP image
Output: A WebP at quality 90
Compression: AVIF: lossy → WebP: lossy
Engine: Pillow (with ImageMagick fallback)
Privacy: Private download link; files are deleted after 6 hours. No account needed.

How AVIF turns into WebP: Pixel decoding and image re-encoding

A high-efficiency av1-derived still image with hdr and alpha capabilities is decoded into a working pixel canvas first, then written back out under WebP's own color and compression model. Dimensions can stay exactly the same even as encoding, metadata, and fine detail change underneath. AVIF reading selects the primary AV1 image item and follows its color, alpha, depth, gain-map, transform, and sequence relationships inside the container. Because WebP can be lossy, lossless, transparent, or animated, confirm explicitly which mode was actually chosen, along with the oldest supported browser, edge quality, frames, color, and metadata.

Decoded canvas - A high-efficiency AV1-derived still image with HDR and alpha capabilities. Written image - A modern web image format capable of lossy or lossless pixels, alpha, and animation.

Need a different output? See all AVIF conversion options, or check which other files convert to WebP.

Before converting a whole batch, read choosing between JPG, PNG, WebP and AVIF; it explains how transparency, detail and browser support decide the format.

AVIF

AV1 Image File

Used for high-efficiency modern images.

Family: Images
MIME: image/avif

→

WebP

WebP image

Designed for efficient modern web graphics.

Family: Images
MIME: image/webp

When to actually choose AVIF to WebP

WebP wins this route whenever its specific mix of compatibility, alpha, animation, and file size fits the destination better than AVIF does.

What changes between the AVIF model and the WebP deliverable

Both formats are lossy, so this adds a second round of compression; convert from the best original you have rather than an earlier export.
Treat AVIF-specific metadata fields as optional in the WebP result until you have actually confirmed they survived.

AVIF source facts versus WebP output requirements

What can fail when AV1 Image File is interpreted

Older apps may not decode AVIF, and aggressive encoding can smear fine texture despite a small file.

What WebP image cannot safely promise

Older software may reject WebP outright, and a lossy encode can soften texture or edges around transparency.

How the WebP writer handles this route

a modern web image format capable of lossy or lossless pixels, alpha, and animation is what gets written, labeled as image/webp. Whether that actually opens depends on the receiving application, not on the file extension.

Checking the WebP result before you trust it

Record the AVIF evidence before conversion

Inspect gradients and texture at 100% and open the file on the oldest required device.

Test the WebP file in its receiving workflow

Confirm the encoding mode used, check animation frames and transparency, and test the oldest browser this needs to support.