WebP to AVIF Converter

Convert WebP images to AVIF for even better compression. Get smaller files with the same visual quality.

Drag & drop files here

or Browse Files

Max file size: 10MB · Max 2 files at once

WebP was a major step forward from JPG and PNG, but AVIF takes compression even further. Based on the AV1 video codec, AVIF delivers 20-30% smaller files than WebP at equivalent visual quality. If you already serve WebP on your site, upgrading to AVIF is the next optimization step. ConvertFile processes the conversion on our secure server.

How to Convert

Select or drag and drop your WebP file

Adjust quality settings if desired

Click Convert and download your AVIF file

Why Convert WebP to AVIF?

AVIF outperforms WebP in compression efficiency by 20-30% at equivalent visual quality. Both formats support transparency and lossy/lossless compression, but AVIF also adds HDR support, wider color gamuts, and better handling of fine details and gradients.

For websites already using WebP, switching to AVIF is the next logical optimization. The file size savings compound across hundreds of images, improving page load times and reducing bandwidth costs. Use the HTML picture element to serve AVIF to supported browsers and WebP as a fallback.

WebP vs AVIF Comparison

Aspect	WebP	AVIF
Compression Efficiency	Good	20-30% better than WebP
Transparency	Yes	Yes
HDR Support	No	Yes
Best For	Web publishing	Maximum compression, HDR
Browser Support	All modern browsers (since 2020)	Chrome 85+, Firefox 93+, Safari 16+
Encoding Speed	Fast	Slower (better compression)

What is WebP?

WebP is an image format developed by Google in 2010. It supports both lossy and lossless compression, transparency, and even animation in a single format. Lossless WebP files are 26% smaller than equivalent PNG files. Lossy WebP files are 25-34% smaller than equivalent JPG files. All major browsers have supported WebP since 2020, including Chrome, Firefox, Safari, and Edge.

What is AVIF?

AVIF (AV1 Image File Format) was developed by the Alliance for Open Media in 2019. It is based on the AV1 video codec and delivers up to 50% smaller files than JPEG at equivalent visual quality. AVIF supports lossy and lossless compression, transparency, HDR, wide color gamuts, and animation. Browser support includes Chrome 85+, Firefox 93+, and Safari 16+. Encoding is slower than JPEG or WebP, but the file size savings are substantial.

Secure Server-Side Processing

Your WebP files are processed on our secure server using Sharp, a high-performance image processing library, and temporarily stored. Files are automatically deleted within 1 hour. Server-side processing enables AVIF encoding that would be too slow or unsupported in most browsers.

Frequently Asked Questions

How much smaller is AVIF compared to WebP?

AVIF files are typically 20-30% smaller than WebP at the same visual quality. The savings are most noticeable in photographic content with complex textures and gradients.

Should I replace WebP with AVIF on my website?

Use both. Serve AVIF to browsers that support it (Chrome 85+, Firefox 93+, Safari 16+) and fall back to WebP for older browsers. The HTML picture element makes this straightforward.

Does AVIF have worse browser support than WebP?

AVIF has slightly less coverage than WebP. WebP is supported by all modern browsers since 2020. AVIF is supported by Chrome 85+, Firefox 93+, and Safari 16+, covering over 92% of global traffic.

Why is AVIF encoding slower?

AVIF uses the AV1 codec, which achieves better compression through more complex algorithms. The encoding is slower, but the resulting files are significantly smaller. This is why we process conversions on our server.

Are my files secure?

Yes. Files are processed on our secure server and temporarily stored. They are automatically deleted within 1 hour of processing.

Does AVIF support animation like WebP?

Yes. AVIF supports animated sequences with even better compression than animated WebP. This converter handles static images only.

Is the transparency preserved?

Yes. AVIF supports alpha channel transparency. Any transparent areas in your WebP file are preserved in the AVIF output.

Will the image dimensions change?

No. The output AVIF has the exact same width and height as the input WebP. Only the file format and compression method change.

Related Tools

AVIF → PNG

PNG → AVIF

WebP → PNG

Why Convert WebP to AVIF?

Aspect

WebP

AVIF

Compression Efficiency

Good

20-30% better than WebP

Transparency

Yes

HDR Support

Yes

Best For

Web publishing

Maximum compression, HDR

Browser Support

All modern browsers (since 2020)

Chrome 85+, Firefox 93+, Safari 16+

Encoding Speed

Fast

Slower (better compression)