Convert AVIF to WebP Online
Turn AVIF files into WebP directly in your browser using ConverterUp. There is no upload, no waiting in a queue, and no account required — your files stay on your device while WebAssembly does the work locally. Adjust quality and dimensions where supported, then download the result. The output keeps the visual fidelity you'd expect from a desktop app while running entirely in the browser tab.
Convert AVIF to WebP nowHow to convert AVIF to WebP
Open the converter
Click the button to open the AVIF to WebP tool. It loads instantly — no install, no signup.
Drop your AVIF file
Drag your AVIF file into the upload area or click to browse. The file stays in your browser memory only.
Download WebP
The conversion runs locally and finishes in seconds. Click download to save the WebP file to your device.
AVIF vs WebP at a glance
Key technical differences between the two formats, so you know what to expect before converting.
| Feature | AVIF | WebP |
|---|---|---|
| Type | Raster image | Raster image |
| Compression | Lossy or lossless | Lossy or lossless |
| Transparency | Full alpha channel | Full alpha channel |
| Animation | Yes | Yes |
| Bit depth | 8, 10, 12 bit/channel | 8 bit/channel |
| Browser support | All modern browsers | All modern browsers |
| Extensions | .avif | .webp |
| MIME type | image/avif | image/webp |
| Introduced | 2019 · Alliance for Open Media | 2010 · Google |
What changes when you convert AVIF to WebP
- WebP supports both lossy and lossless compression. The converter uses lossy mode by default for smaller files — raise the quality slider if you need the result to stay closer to the original AVIF.
- Transparency is preserved: WebP supports an alpha channel, so transparent backgrounds from AVIF stay transparent.
- WebP supports animation, so animated AVIF files can keep their frames and timing.
- WebP is less space-efficient than AVIF, so expect the converted file to be larger than the original.
About AVIF
AVIF is an image format based on the AV1 video codec, published by the Alliance for Open Media. It offers some of the best compression available, with HDR, wide color gamut and transparency.
- Best for
- High-performance websites, large hero images and photo galleries where every kilobyte counts.
- Strengths
- Very small files at high quality, 10- and 12-bit color, transparency.
- Limitations
- Slower to encode, and support in older browsers and image editors is still incomplete.
About WebP
WebP is Google's image format for the web. It supports lossy and lossless compression, alpha transparency and animation in a single format, usually producing smaller files than JPG or PNG.
- Best for
- Website images, e-commerce product photos, animated stickers and anything served to browsers where page speed matters.
- Strengths
- Smaller than JPG/PNG at similar quality, transparency and animation, supported by all modern browsers.
- Limitations
- Some older desktop software, print workflows and upload forms still do not accept it.
Frequently asked questions
Is the AVIF to WebP conversion really free?
Yes. ConverterUp is fully free, with no signup, no watermarks, and no daily quota for the AVIF to WebP converter. We support the project through unobtrusive ads.
Are my AVIF files uploaded to a server?
No. Conversion runs in your browser using WebAssembly. The AVIF bytes never leave your device, and we have no upload endpoint at all.
What is the maximum file size?
For AVIF input, the soft cap is 50 MB for images and 500 MB for video. Practical performance depends on your device's RAM.
Does converting AVIF to WebP reduce quality?
Only if you want it to. WebP can be lossless or lossy; a high quality setting keeps the result visually identical to the AVIF source while still saving space.
What happens to an animated AVIF when converted to WebP?
WebP supports animation, so frames and timing can be kept — and the file is usually much smaller than the AVIF original.
Related guide
PNG vs JPG vs WebP: Which Format to Use WhenRelated conversions
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