What are the Differences between WebP and AVIF? Here is Ultimate Guide
Last Updated on September 20, 2025 by Peter Wood
Which should be the optimal photo format for your website, WebP or AVIF? Both of them are the new image formats with advanced image compression codecs that are small in file size, excellent in photo quality, and limited in compatibility. Whether you need to use some WordPress plugins or simply convert JPEG/PNG to WebP or AVIF, you should learn more about the differences before choosing the suitable one.
Part 1: Which is the Desired Photo Format, AVIF V.S. WebP
Just as mentioned above, both photo formats are the successor of JPEG and PNG photos. But what are the advantages of these two new image formats? Which image format is more desirable? Here are some important differences between AVIF and WebP.
AVIF V.S. WebP Usage
AVIF is a photo format based on the open-source AV1 video codec, which supports a transparent background and is capable of storing a series of animation frames, just like high-quality GIF animation. Moreover, it is the photo format that supports HDR colors.
WebP is a VP8 video codec-based photo format that supports both lossy and lossless compression. The lossless WebP also supports transparency that is much smaller than the PNG files. Both lossy and lossless and transparency are all supported in animated WebP images.
AVIF V.S. WebP Compression Ratio
When you need to convert JPEG, PNG, or animated GIF to AVIF or WebP, here is a comparison of the file size and output. Since the various AVIF or WebP converters, the output sizes should be different. Here is a comparison for the similar quality of EZGIF and WidsMob.
| AVIF WebP Converter | Original File Format | Online EZGIF | WidsMob ImageConvert (50%) |
|---|---|---|---|
| JPG to WebP | 2.96MB | 1.10MB | 656KB |
| PNG to WebP | 4.23MB | 2.69MB | 482KB |
| GIF to WebP | 1.18MB | 3.55MB | 2.26MB |
| JPG to AVIF | 2.96MB | 441KB | 324KB |
| PNG to AVIF | 4.23MB | 400KB | 306KB |
| GIF to AVIF | 1.18MB | 235KB | 234KB |
Since EZGIF is only an online WebP or AVIF converter that does not have any parameters to tweak the file quality and duration. When you need to get the optimal output, you should choose WidsMob ImageConvert instead.
AVIF V.S. WebP Quality
Both AVIF and WebP support transparency and animation, the two formats can replace previously used JPG, PNG, and animated GIF. Compared to WebP, AVIF also supports HDR colors. When you need to have the maximum file quality, you should find the file size should be much large than the original JPEG or PNG.
AVIF V.S. WebP Compatibility
WebP files are compatible with Google Chrome, Firefox, Opera, and more web browsers. Apple added support for the Safari browser in iOS 14 and macOS Big Sur. AVIF only works with the latest Chrome and Firefox, the file format is not supported by Chrome for Android or Internet Explorer. Apple has already added AVIF to iOS 16 and macOS Ventura.
Part 2: Best AVIF/WebP Converter to Convert AVIF or WebP
When you need to tweak the file quality and duration for AVIF or WebP output files, convert the photos with presets, upscale the low-resolution photos, and even add watermarks to the photos, WidsMob ImageConverter is the one-stop solution to manage file formats for your website. It supports most file formats for all devices, including RAW, JPG, PNG, HEIC, AVIF, WebP, and other file formats.
1. Customize and apply AVIF or WebP conversion presets within one click.
2. Edit photos with rename, rotate, flip, crop, add text/image watermark, etc.
3. Provide advanced AI super-resolution to enhance the small AVIF/WebP.
4. Convert WebP to AVIF, JPEG/PNG/GIF to AVIF/WebP, and vice versa.
Step 1: Once you have installed WidsMob ImageConverter, you can launch the program on your computer and click the Import button to add the photos to the program. Of course, you can also drag-n-drop different photo files for a batch process.
Step 2: Double-click the photo to enter the editing window, in which you can crop the desired part, resize the photos, rotate/flip the images, add text and image watermarks, or even upscale the resolution with AI technologies up to 4X the original size.
Step 3: If you need to use the photos with a standard, you can click the Plus button under the Presets menu. Just enter the name of the preset and you can apply the whole series of editing in one click. When you get everything done, you can click the Batch Convert button.
Step 4: Whether you need to choose AVIF or WebP, just select the desired file format from the drop-down list next to Format. After that, you can tweak the quality and the duration for the file format before clicking the Convert button to achieve the files.
Part 3: FAQs about the Differences between AVIF and WebP
Conclusion
Both AVIF and WebP formats have good prospects for development. The two file formats share a common purpose but still differ in terms of image quality, file size, etc. Whether you need to choose AVIF with a much better quality, or WebP with greater compatibility, WidsMob ImageConverter is always the best choice to switch between different file formats, especially for the latest WebP and AVIF.