Is my image uploaded to a server?

No. Everything runs inside your browser. The image never leaves your device.

Why is the AVIF sometimes larger than the WebP?

AVIF encoding via the Canvas API depends on the browser's built-in encoder. At high quality settings (above 85) the overhead can exceed the gain. Try lowering quality to 75–80 for better compression.

Which browsers support AVIF encoding?

Chrome 113+, Edge 113+, and Firefox 113+ support AVIF encoding via the Canvas toBlob() API. Safari supports AVIF display but may not support encoding yet — the tool will show an error message if encoding is unavailable.

What quality value should I use?

For most web images, 70–80 offers a good balance between visual fidelity and file size. Photos can often go as low as 60 with minimal visible degradation.

Can I convert non-WebP images?

This tool is optimized for WebP input. Other formats may work if your browser can decode them, but results are not guaranteed.

WebP to AVIF Converter

Name: WebP to AVIF Converter
Availability: InStock
Author: Nham Vu

Drop a WebP image, adjust quality, and download it as AVIF — all processed locally in your browser.

Upload WebP Image

Drag & drop a WebP file here or click to browse

Output Quality 75

Smaller file Higher quality

Upload a WebP image to get started

Summary

Drop a WebP image, adjust quality, and download it as AVIF — all processed locally in your browser.

How it works

Select or drag a WebP image onto the drop zone.
The image is decoded in the browser using an HTML Canvas element.
Adjust the quality slider (1–100) to balance size vs. quality.
Click Convert to encode the canvas output as an AVIF blob.
Compare the original and converted file sizes, then download the AVIF file.

Use cases

Reduce image payload on websites by switching from WebP to AVIF.
Batch-test different quality levels before choosing a compression setting.
Convert design exports to AVIF without installing desktop software.
Verify AVIF compatibility and file size before updating a CDN pipeline.
Quickly produce AVIF assets for blog posts and landing pages.
Check how much space you save compared to your original WebP file.

Frequently Asked Questions

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Last updated: 2026-05-29 · Reviewed by Nham Vu