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How to convert WebP to AVIF

Transform your WebP images into AVIF in seconds. Everything runs in your browser — no file ever leaves your device.

4 min readUpdated on April 25, 2026

You need to send it to someone in an environment that doesn't support WebP, or to print, or to use in an old editor. Web performance is your #1 priority and you accept marginal compatibility trade-off.

What is WebP?

A modern format created by Google in 2010, designed for the web. Supports both lossy and lossless compression, transparency, and animation. WebP files are ~25-35% smaller than equivalent JPG/PNG with similar visual quality — that's why it became the de-facto standard on optimized sites.

  • Images published on websites and blogs
  • E-commerce and online marketing banners
  • Replacing both JPG and PNG in web workflows
  • Ads and paid media (loads faster)

Why convert to AVIF

A next-generation format based on the AV1 video codec, released in 2019. Compresses even further than WebP — typically 30-50% smaller than JPG at the same visual quality. Adopted by Netflix, YouTube, and increasingly by big sites for performance-critical images.

  • Sites obsessed with Core Web Vitals
  • Hero images and heavy banners
  • E-commerce where latency hits conversion
  • Content distributed over bandwidth-limited networks
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Step-by-step: convert your image

1. Upload the file

Drag your WebP file into the upload area, or click to select it from your computer. You can upload several files at once — they'll be converted in batch.

2. Check the quality setting

AVIF has adjustable quality in most cases. Leave it at 85-90% for the best size/quality balance. For professional material, bump it to 95-100%.

3. Click convert and download

Processing is near-instant (seconds per image) because it happens right in your browser. When it's done, download each file individually or all together as a ZIP.

WebP vs AVIF: technical comparison

Before converting, it's worth understanding what each format brings to the table:

WebP — best for:

  • Images published on websites and blogs
  • E-commerce and online marketing banners
  • Replacing both JPG and PNG in web workflows
  • Ads and paid media (loads faster)

WebP — limitations:

  • Near-universal support today, but some old readers can't open it
  • Editors outside the web ecosystem (older Photoshop) may need a plugin
  • For professional print, traditional formats still dominate

AVIF — best for:

  • Sites obsessed with Core Web Vitals
  • Hero images and heavy banners
  • E-commerce where latency hits conversion
  • Content distributed over bandwidth-limited networks

AVIF — limitations:

  • Support still smaller than WebP on very old browsers
  • Slower encoding (but fast decoding)
  • Editors and design tools still catching up
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When converting from WebP to AVIF makes sense

Typical scenarios where this conversion solves a real problem:

  • Images published on websites and blogs
  • E-commerce and online marketing banners
  • Sites obsessed with Core Web Vitals
  • Hero images and heavy banners

Frequently asked questions

Quality depends on both formats. For conversions between modern formats with similar quality (PNG → WebP, for example), the visual loss is imperceptible. For conversions to lossy formats (anything → JPG), quality depends on the level you pick — 85-90% is practically indistinguishable from the original.