weconvertit

Image

Convert WebP to AVIF

Free, private, and instant — your files never leave your device.

Loading converter…

AVIF uses more advanced compression than WebP, producing files 20–35% smaller at equivalent visual quality. Both formats are lossy, so re-encoding applies compression a second time — use a quality setting of 75%+ to keep the added loss imperceptible. AVIF encoding runs in WebAssembly and takes a few seconds longer than WebP or JPEG. The compression improvement means real bandwidth and storage savings at scale: a WebP photo library re-encoded to AVIF shrinks measurably without visible quality degradation.

When you’d want this conversion

  • Improving web performance — smaller files mean faster page loads and better Core Web Vitals scores
  • Reducing image storage and bandwidth costs on a CDN or web server
  • Serving images to audiences on modern browsers where AVIF's extra efficiency matters at scale
  • Upgrading existing WebP assets without going back to a raw source

What to watch for

Animation is not preserved — only the first frame of the WebP is captured. If you need a specific frame or the full animation, use a dedicated WebP tool first.
Both formats are lossy — re-encoding applies compression twice. Start from the highest-quality source you have and keep the quality slider at 80%+ to minimise compounding artifacts.
AVIF requires a modern browser to display: Chrome 85+, Firefox 93+, or Safari 16+. For images shared by email or opened in desktop apps, use WebP or JPEG instead.
From.webp

WebP

Web Picture format

  • Lossy compression
  • Supports transparency
  • Best for: web images, CMS uploads, app assets
To.avif

AVIF

AV1 Image File Format

  • Lossy compression
  • Supports transparency
  • Best for: high-efficiency web images, HDR photography, modern web delivery

More WebP Conversions

Convert WebP to PNG Convert WebP to JPEG

Convert Other Formats to AVIF

Convert PNG to AVIF Convert JPEG to AVIF Convert GIF to AVIF Convert BMP to AVIF Convert HEIC to AVIF Convert SVG to AVIF

Related Tools

Convert AVIF to WebP Compress WebP Image Converter

Related Guide

PNG vs JPG vs WebP vs AVIF

How to Use

  1. 1

    Drop your WebP file or click to browse — the output format is already set to AVIF.

  2. 2

    Adjust the quality slider. 75–80% is a good starting point; lower values produce smaller files with more visible compression.

  3. 3

    Click "Convert to AVIF" — conversion runs entirely in your browser. Expect a few extra seconds — AVIF encoding runs in WebAssembly.

  4. 4

    Download the AVIF. Note: animated WebPs convert only the first frame.

Frequently Asked Questions

How much smaller will the AVIF be compared to the WebP?

Typically 20–35% smaller at equivalent visual quality. Exact savings depend on image content; natural scenes compress more than high-frequency graphic detail.

Why does AVIF encoding take longer than other formats?

AVIF is derived from the AV1 video codec, which uses far more computationally intensive compression algorithms than JPEG or WebP. Your browser runs the AV1 encoder in WebAssembly — it stays private and local, but it is CPU-heavy. Larger images or higher quality settings take proportionally longer.

Is AVIF supported in all browsers?

AVIF is supported in Chrome 85+ (2020), Firefox 93+ (2021), and Safari 16+ (2022). As of 2025, this covers over 95% of browsers globally. For older browsers or non-browser software, use a WebP or JPEG fallback via the HTML <picture> element.

See all conversions

Browse every supported format pair — pre-configured and ready to go.

All Conversions