Next-Generation Web Delivery

Convert PNG to AVIF Online

Transform heavy PNG graphics into lightweight AVIF images. Cut image payload weight by up to 80% while retaining sharp edges and full alpha transparency.

  • Up to 80% file size reduction vs PNG
  • Full alpha transparency preserved
  • Boosts Core Web Vitals and LCP scores
PNG to AVIF Converter WorkspaceConverting to avif · No compression by default (100% quality)
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Output Format

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Format ComparisonTechnical Breakdown

PNG vs AVIF: Key Differences

Evaluate how PNG and AVIF compare across compression algorithms, browser compatibility, transparency, and practical performance.

SpecificationPNGAVIF (Target)
Format Type
Lossless DEFLATE rasterAV1-based modern raster
Compression
Lossless only (heavy)Advanced lossy & lossless
Transparency
Supported (8-bit alpha)Supported (full alpha)
File Size
Large payload weightUltra-compact (up to 80% less)
Ideal Use
Source design assetsProduction web delivery

Format Optimization Guide

Mastering PNG to AVIF Conversion

Practical architectural advice for web performance, cross-platform compatibility, and asset workflows.
01

Slash web asset weight with AVIF

PNG has long been the web standard for icons, logos, illustrations, and transparent UI assets. However, uncompressed or lossless PNG files frequently weigh hundreds of kilobytes or even megabytes, dragging down page load speed and Core Web Vitals.

AVIF utilizes modern AV1 video intra-frame coding to represent graphical details and gradients with exceptional efficiency. Converting PNG to AVIF provides massive bandwidth savings while maintaining pixel-sharp lines and transparency.

02

Client-side processing with full alpha retention

Our converter preserves transparency channels during conversion so transparent logos, product cutouts, and stickers blend seamlessly against any background.

Everything happens locally on your computer using high-performance WebAssembly. There are no queue delays, subscription paywalls, or privacy risks.

Frequently Asked Questions

Common questions about converting PNG images to AVIF format.

Q. Does AVIF support transparent PNG backgrounds?

Yes. AVIF fully supports alpha transparency channels. Transparent areas in your PNG images remain completely transparent after conversion to AVIF.

Q. How much file size reduction can I expect?

Most graphical PNGs see file size reductions between 65% and 85% when converted to AVIF at comparable visual quality, dramatically speeding up web load times.

Q. Which browsers support AVIF images?

AVIF is supported by all modern browsers including Google Chrome, Mozilla Firefox, Apple Safari (macOS Ventura and iOS 16+), and Microsoft Edge, representing over 93% of global web traffic.

Q. Can I adjust compression settings if needed?

Yes. While our converter defaults to maximum fidelity, you can adjust the quality slider or resize dimensions in the workspace settings before downloading.

From the SpeedVitals blog

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