Both of these formats were built for the modern web, so why move between them? Compatibility, mostly. AVIF has the edge in compression, but WebP has years of head start in software support: content management systems, image plugins, chat apps, and countless internal tools accept WebP while still choking on AVIF. Converting gets you most of the size savings of a modern format with far fewer surprises downstream.
The typical case looks like this: you exported or downloaded images as AVIF, then discovered your CMS thumbnailer, e-commerce platform, or design tool does not recognize them. Rather than falling all the way back to JPEG or PNG, WebP is the middle path — typically 25 to 35 percent smaller than an equivalent JPEG, with full support for transparency, and displayable in essentially every browser in use today. It is also the safer choice when handing files to clients or coworkers whose software you cannot predict.
Drop your file on this page and the conversion runs right in the tab, with the output landing in your downloads folder like any other file. The WebP encoder defaults to quality 80, which suits most web images; nudge it higher for photography where detail matters, or lower for thumbnails where size wins. Transparency in the source AVIF is preserved in the output, since WebP has a proper alpha channel. Two honest caveats: both formats are lossy, so avoid converting back and forth repeatedly, and AVIF decoding is computationally demanding, so a very large source image can take a little while.
The converter itself is free and private by design. Files are processed on your device with WebAssembly and never uploaded; there is no account, no queue, and no size-gated premium tier. The engine downloads once — about 5 MB — and your browser caches it, so later conversions start instantly.
Why convert AVIF to WebP?
- WebP is accepted by CMSs, plugins, and tools that still reject AVIF
- Displayable in essentially every current browser, with years of established support
- Transparency survives the conversion — WebP has a full alpha channel
- Keeps files far smaller than falling back to JPEG or PNG
- WebP decodes faster than AVIF, which helps on image-heavy pages
How it works
- Step 1
Drop your files
Drag your AVIF files into the converter above, or click “Choose files”. Batches are welcome.
- Step 2
Pick your settings
WebP is preselected. Adjust quality or size if you want, or keep the defaults.
- Step 3
Convert and download
Conversion runs locally in your browser. Download files individually or grab everything as a zip.
Frequently asked questions
- Can anyone else see the images I convert here?
- No. Nothing you drop on this page is transmitted anywhere — conversion runs locally in your browser through WebAssembly. There are no uploads, no server-side copies of your files, and no account tying activity to you.
- Will I lose image quality going from AVIF to WebP?
- A little, in theory. Both formats are lossy, so re-encoding introduces some generational loss on top of the compression already baked into the AVIF. At the default quality of 80 the difference is usually invisible on real-world images. Raise the slider toward 90 for extra headroom, and avoid running the same image through lossy conversions repeatedly.
- Does transparency carry over?
- Yes. WebP supports a full alpha channel, so transparent backgrounds and soft, semi-transparent edges in your AVIF are kept in the output. There is no need to detour through PNG just to preserve the alpha.
- What about animated AVIF files?
- Animated conversion is not supported yet, so this tool is for still images. Converting an animated file will not produce an animated WebP — keep the original around for anything that needs motion.
- Will the WebP be bigger or smaller than my AVIF?
- Usually somewhat bigger. AVIF is the newer and more efficient codec, so WebP typically needs more bytes for the same visual quality. It will still be dramatically smaller than a JPEG or PNG of the same image, which is why WebP makes a good compatibility fallback.