Photo WebP
73 KB WebP → 74 KB AVIF
1% larger at Balanced quality — a useful reminder to compare real results.
FREE ONLINE IMAGE CONVERTER
WebP to AVIF Converter
Convert WebP images to AVIF online for free. Adjust image quality, preserve transparent backgrounds, and compare real file sizes before downloading.
Adjustable quality · Transparency · Batch ZIP
Static WebP images only. AVIF may be smaller or larger depending on the original and quality setting.
Supports static .webp files · No signup required · Convert multiple files · 25 MB and about 24 megapixels each · Up to 20 files or 100 MB at a time
Your files stay on your device and are never uploaded to our server.
No sign-up
Files never leave your device
Batch download as ZIP
THREE STEPS
How to Convert WebP to AVIF
- 01
Upload your WebP images
Select one or more static WebP files or drag them into the converter. Conversion starts automatically.
- 02
Choose AVIF quality
Use High, Balanced, or Smaller file to adjust image quality and file size. Change the quality anytime to compare the result.
- 03
Download AVIF images
Compare the original and converted file sizes, then download individual AVIF images or all completed files in a ZIP.
REAL CONVERSION EXAMPLES
WebP to AVIF Conversion Examples
These files were converted with this site at Balanced quality (60). Download either format to inspect the actual result.
Transparent WebP
16 KB WebP → 7 KB AVIF
59% smaller at Balanced quality, with transparency retained.
FILE SIZE
WebP vs AVIF File Size
WebP and AVIF are both efficient image formats. AVIF can create smaller files for some images, but converting an already optimized WebP may produce similar or larger results. Test multiple quality settings and compare the file sizes before replacing your original.
| Sample | Original WebP | Quality 40 | Quality 60 | Quality 80 |
|---|---|---|---|---|
| Photo | 73 KB | 37 KB 49% smaller | 74 KB 1% larger | 99 KB 36% larger |
| Transparent logo | 16 KB | 4 KB 77% smaller | 7 KB 60% smaller | 10 KB 37% smaller |
TRANSPARENCY
Does WebP to AVIF Preserve Transparency?
Yes. Both WebP and AVIF support transparent backgrounds. Transparent areas in static WebP images stay transparent after conversion. The exact appearance of partially transparent edges may vary with the selected quality.
USE CASES
Why Convert WebP to AVIF?
Compare image compression
Evaluate whether AVIF reduces actual bytes at an acceptable quality for your images.
Prepare AVIF website assets
Create files for a web workflow that supports modern AVIF images.
Standardize image formats
Turn supported static WebP files into AVIF when one output format suits your project.
For older software, compatibility-sensitive workflows, or already well-optimized WebP images, keeping WebP may be the better choice.
AT A GLANCE
WebP vs AVIF: What's the Difference?
| Feature | WebP | AVIF |
|---|---|---|
| Lossy compression | Yes | Yes |
| Lossless compression | Yes | Yes |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Encoding speed | Often faster | Often slower |
| Browser compatibility | Very broad | Broad in modern browsers |
| Typical size at comparable quality | Efficient | Can be smaller |
Both formats support animation, but this WebP to AVIF converter currently accepts static WebP images only.
COMMON QUESTIONS
Frequently Asked Questions
How do I convert WebP to AVIF?
Upload one or more static WebP images, choose High, Balanced, or Smaller file quality, then download each AVIF or all completed files in a ZIP.
Is this WebP to AVIF converter free?
Yes. It is free to use, requires no registration, and works within the file and batch limits shown in the uploader.
Can I convert WebP to AVIF online without uploading files?
Yes. The conversion runs locally in your browser. Your images are not uploaded to our server.
Will AVIF always be smaller than WebP?
No. AVIF can make some images smaller, but an already optimized WebP can produce a similar or larger result. Compare the real sizes shown for each conversion.
Does WebP to AVIF preserve transparency?
Yes. Static WebP images with transparent pixels keep their transparent backgrounds in the converted AVIF.
Does converting WebP to AVIF reduce quality?
A lossy WebP is re-encoded when it becomes AVIF, so conversion cannot restore detail the WebP already lost. Higher quality settings generally preserve more detail but create larger files.
Can I batch convert multiple WebP files to AVIF?
Yes. Add multiple static WebP files, then download individual results or all ready AVIF files together as a ZIP.
Can I convert animated WebP to animated AVIF?
Animated WebP to animated AVIF is not supported by this converter yet. Please use a static WebP image. Animated files are rejected rather than reduced to one still image.