PixConvertBlogWebP to AVIF Converter
Upgrade WebP images to AVIF for 20–50% smaller files with the same visual quality. Free, no upload, runs 100% in your browser. Full transparency preserved.
Drop your WebP files here
or click to browse — multiple files supported
Your files never leave your device
How to convert WebP to AVIF
- 1
Open in Chrome or Edge
AVIF encoding via canvas requires Chrome 94+ or Edge 94+. If you're on Firefox or Safari, the converter will show an error — switch browsers.
- 2
Drop your WebP file
Drag and drop one or more .webp files onto the converter, or click "Choose Files". Multiple files convert simultaneously.
- 3
Download your AVIF
Click "Download" next to each result. Use "Download all" for a zip when converting multiple files.
WebP to AVIF: the next step in compression
If you're already using WebP for your images, switching to AVIF can squeeze an additional 20–50% out of your file sizes without any visible quality difference. This means faster page loads, lower bandwidth costs, and better Core Web Vitals scores.
AVIF (AV1 Image File Format) is based on the AV1 video codec developed by the Alliance for Open Media. It achieves remarkable results by using more sophisticated encoding algorithms than WebP — especially for photographic content with smooth gradients and complex textures.
20–50%
Smaller than WebP
Additional savings on top of WebP
40–60%
Smaller than JPG
Total compression advantage
97%+
Display support
Chrome, Firefox, Safari 16+, Edge
Using AVIF with a WebP fallback
For production sites, serve AVIF with a WebP fallback for maximum compatibility:
HTML — AVIF first, WebP fallback, JPG last resort
<picture> <source srcset="image.avif" type="image/avif"> <source srcset="image.webp" type="image/webp"> <img src="image.jpg" alt="Description"> </picture>
Next.js — automatic AVIF support
// next.config.js — enable AVIF output
module.exports = {
images: {
formats: ['image/avif', 'image/webp'],
},
};
// Next.js <Image> automatically serves AVIF to supported browsers
<Image src="/photo.webp" alt="..." width={800} height={600} />WebP vs AVIF — technical comparison
| Feature | WebP | AVIF |
|---|---|---|
| File size vs JPG | 25–35% smaller | 40–60% smaller |
| Compression vs WebP | Baseline | 20–50% smaller |
| Transparency | ✓ Supported | ✓ Supported |
| HDR / wide color | ✗ No | ✓ Supported |
| Browser encoding | All modern browsers | Chrome / Edge only |
| Safari display | ✓ macOS 11+ | ✓ Safari 16+ only |
| Social media upload | ✓ Widely accepted | ✗ Often rejected |
| Core Web Vitals | ✓ Better than JPG | ✓ Best in class |
100% private — files never leave your device
All WebP-to-AVIF conversion happens inside your browser using the Canvas API. Your images are never transmitted anywhere. No account, no watermark, no server-imposed file size limit.
Frequently Asked Questions
Is AVIF better than WebP?
In terms of compression, yes — AVIF typically achieves 20–50% smaller files than WebP at equivalent visual quality. AVIF also supports HDR color, wider color gamuts, and higher bit depths. However, WebP has broader platform compatibility, especially on older Safari versions and many social/CMS platforms.
Does WebP to AVIF preserve transparency?
Yes. Both WebP and AVIF support full alpha transparency. Every transparent pixel in your WebP image will be preserved exactly in the AVIF output.
Which browsers support AVIF encoding?
AVIF encoding via the browser Canvas API requires Chrome 94+ or Edge 94+. Firefox and Safari cannot encode AVIF via canvas.toBlob() yet. If you need cross-browser encoding, use WebP instead.
Will WebP to AVIF improve my Core Web Vitals?
Yes. Smaller image files directly improve Largest Contentful Paint (LCP), a key Core Web Vitals metric. Switching from WebP to AVIF can shave additional kilobytes off your image payload, especially for image-heavy pages.
How do I use AVIF in HTML with a fallback?
Use the <picture> element: <picture><source srcset="image.avif" type="image/avif"><source srcset="image.webp" type="image/webp"><img src="image.jpg" alt="..."></picture>. Browsers load the first format they support — AVIF first, WebP as fallback, JPG as last resort.
Is AVIF good for logos and transparent images?
Yes. AVIF supports lossless mode with full alpha transparency, making it suitable for logos and UI assets. However, tool and platform support for AVIF is still limited — PNG or WebP may be safer for design workflows.
Are my files uploaded to a server?
No. All conversion runs inside your browser using the Canvas API. Your images are never sent anywhere. No account required, no watermark, no file size limit.
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