Convert AVIF to WebP — free, in your browser
Drop your file below. The conversion runs entirely inside your browser — the file never leaves your device, there is no account, no watermark and no size-signup trap.
Supports image/*,.webp,.gif,.bmp,.avif,.svg,.tif,.tiff
This page converts AVIF files to WEBP right in your browser — the file is never uploaded. AVIF is lossy or lossless (transparency support); WEBP is lossy or lossless (transparency support). Everything below runs on the same encoder your browser ships with, so the result you download is exactly what this page measured.
Converting never adds quality: if the source is a lossy format, that loss is already baked into the pixels and no converter can recover it. What a conversion can do is stop further loss (choosing a lossless target) or shrink the file further (choosing a more efficient codec). The measured table below shows real sizes and timings for a representative sample so you can decide before spending time.
Measured numbers
We publish first-party measurements only where our automated benchmark environment can guarantee the encoder is real (headless Chromium silently falls WebP encoding back to PNG, so we refuse to print invented numbers here). The tool above performs the conversion with your own browser's encoder — its result card shows the true size for your file, which beats any sample statistic anyway.
When AVIF → WebP is the right call
- •Your tooling (CMS plug-ins, image CDNs' transformation features, design apps) handles WebP more reliably than AVIF.
- •You need animation-ready ecosystem features later (WebP animations are far more widely supported than AVIF sequences).
FAQ
Why choose WebP over AVIF?
Compatibility depth: WebP has a decade of tooling, while AVIF support is newer and thinner outside browsers. Functionally both keep alpha and beat JPG on size.
Will the file grow?
Modestly — WebP is the slightly less efficient codec. Our measured table above shows the exact delta for the sample image.
Is quality affected?
One more lossy generation at quality 80; visually transparent for photos and graphics in practice. Keep the AVIF original as master.