Works offline

Convert AVIF to WebP on your device

WebP is accepted by far more CMS platforms, email tools and apps than AVIF while staying small. If your pipeline delivered AVIF and the destination wants WebP, this page re-encodes it locally with a quality slider.

Turn off your Wi-Fi. It still works.
Metadata is stripped. Orientation is kept.

    Expect the WebP to be somewhat larger than the AVIF at matching quality; that is the price of the wider support.

    Why convert AVIF to WebP

    How to convert AVIF to WebP without uploading

    1. Drop AVIF files onto the box above, or click it to pick them. On a phone you can choose straight from your photos.
    2. Adjust quality if you want. The default is tuned to be visually identical to the original.
    3. Download. Each file gets a button as it finishes; with more than one file you can download a single zip. The WebP files are written entirely on your device.

    About AVIF (AV1 Image File Format)

    AVIF is the newest mainstream image format, derived from the AV1 video codec. It typically produces files about half the size of JPG at the same quality, supports transparency, HDR and wide colour, and is supported in Chrome, Firefox, Edge and Safari 16.4 or later.

    AVIF is slow to encode, barely supported outside browsers, and routinely rejected by upload forms, so it is a great delivery format and a poor exchange format.

    About WebP

    WebP is Google’s web image format. It makes files 25 to 35 percent smaller than JPG at the same visual quality, supports transparency and animation, and is supported by every current browser, which is why so many websites now serve it.

    Outside the browser WebP is still awkward: older versions of Windows Photo Viewer, many desktop editors, print shops and upload forms do not accept it.

    Questions

    Which is better, AVIF or WebP?

    AVIF is smaller; WebP is more widely accepted and faster to encode. Serve AVIF with a WebP fallback on the web; use WebP alone when a tool only takes one.

    Will I lose quality?

    Both are lossy; a re-encode at quality 80 or higher is not visible on photos.

    Is animation preserved?

    No. The first frame is converted.

    Related tools

    OfflinePix never uploads your images. Decoding and encoding run in your browser with WebAssembly; the site works with the network off, and the only thing we count is page views. How it works.