WEBP to AVIF Converter
Convert WebP (WEBP) to AV1 Image File Format (AVIF) online for free. Runs 100% in your browser. Files never leave your device. No signup, no watermarks, no limits.
Drag & drop files here, or browse
Processed on your device. Nothing is uploaded
Automate this. An open tab can convert whole folders via the Local API - still zero uploads.
Local API →How to use WEBP to AVIF Converter
- 01Add files
Choose files or drop them here
- 02Settings
Settings · Runs on your device
- 03Download
Processed on your device. Nothing is uploaded
What is a WEBP (WebP) file?
WebP is a modern image format developed by Google that supports both lossy and lossless compression, transparency and animation. Typically 25–35% smaller than equivalent JPG or PNG files.
- Developed by
- Initial release
- 2010
What is a AVIF (AV1 Image File Format) file?
AVIF is a next-generation image format based on the AV1 video codec. It delivers dramatically smaller files than JPG at comparable quality and supports HDR and transparency.
- Developed by
- Alliance for Open Media
- Initial release
- 2019
Frequently asked questions
How do I convert WEBP to AVIF?
Click “Choose Files” or drag your WEBP file onto the page, optionally adjust the settings, then hit Convert. Your AVIF file downloads straight from your browser. Nothing is uploaded anywhere.
Is this WEBP to AVIF converter free?
Yes, completely free with no hidden limits, watermarks or signup. Because all processing happens on your own device, there are no server costs to pass on to you.
Are my files uploaded to a server?
No. The conversion engine runs entirely in your web browser using WebAssembly. Your files never leave your device. You can even disconnect from the internet after the page loads and keep converting.
Is there a file size limit?
We impose no fixed limit. The practical ceiling is your device's free memory, since processing happens locally. Most conversions work comfortably with files up to a few hundred megabytes, and image or document conversions handle much more.
Does it work on my phone?
Yes. The converter runs in any modern browser on Windows, macOS, Linux, Android and iOS. No app installation is required.