Modern Formats
AVIF to WebP Converter
Convert AV1 Image File Format (AVIF) files to WebP right in your browser. Free, unlimited batch, and your photos never leave your device.
Your files never leave your device — conversion runs locally in your browser.
To convert AVIF to WebP, drop your images above — they are decoded and re-encoded entirely in your browser, never uploaded. Transparency survives the trip, and the quality slider drives the WebP encoder. HDR or 10-bit AVIF decodes to standard 8-bit, and animated AVIF converts as a still of its first frame.
Honest limits
- HDR and 10-bit AVIF decode to standard 8-bit SDR.
- Animated AVIF converts as a still of its first frame.
Need more than a browser can do? Desktop browsers go further than phones — and Media Moana converts at scale on hosted infrastructure.
How it works
Drop your files
Drag AVIF files into the drop zone, click to browse, or paste from the clipboard. Whole folders work too.
Convert locally
Each file is decoded and re-encoded to WebP right in your browser — no upload, no queue. Adjust quality or size first if you like.
Download
Save converted files one by one, or download the whole batch as a ZIP. Originals stay untouched on your device.
About the formats
AVIF — AV1 Image File Format
AVIF is a modern royalty-free image format based on the AV1 video codec, championed by Netflix, Google and Mozilla. It delivers noticeably smaller files than JPEG and WebP at the same visual quality and supports HDR and transparency. Browsers now display AVIF natively, but most desktop software, CMSs and upload forms still don't accept it — so files saved from the web often need converting back to JPG or PNG.
WebP — WebP
WebP is Google's web image format, supporting both lossy and lossless compression plus transparency and animation. It typically produces files 25–35% smaller than JPEG at the same quality, which is why so many websites serve it — and why images saved from the web often arrive as .webp files that desktop software and upload forms reject.
Frequently asked questions
Is this safe? Do my photos get uploaded?
No upload happens — ever. Converting AVIF to WebP runs entirely inside your browser using WebAssembly. Your files never leave your device, nothing is stored on any server, and the tool even keeps working if you go offline after the page loads. That's also why there are no file size limits, no queues and no sign-up.
Does converting AVIF to WebP lose quality?
WebP uses lossy compression, so technically yes — but at the default quality setting the difference is invisible for normal viewing and printing. You control the quality slider: higher values mean larger, more faithful files. Your original AVIF files are never modified.
Can I convert multiple AVIF files at once?
Yes — drop in as many files as you like. Because conversion happens on your own computer instead of a server, there is no per-file fee, no daily cap and no waiting in line. Files are processed one after another, and you can download each WebP file as it finishes or grab the whole batch as a single ZIP.
Why convert AVIF to WebP when both are modern formats?
Reach. WebP has been around since 2010 and is accepted by far more CMSs, upload forms and apps than AVIF, while still compressing much better than JPG or PNG. Converting AVIF to WebP keeps most of the size advantage and loses the compatibility headaches; transparency survives the trip too.
Is there a file size or quantity limit?
There is no hard limit. Server-based converters cap uploads because your files consume their bandwidth and CPU; here converting AVIF to WebP happens on your machine, so the only practical limit is your device's memory. Desktop browsers comfortably handle very large files and big batches.