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Convert PNG to AVIF

AVIF delivers the smallest files of any modern format. Convert your PNGs instantly and privately.

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JPEG, PNG, WebP, AVIF up to 50MB each

PNG vs AVIF: The Next Generation

Compression

AVIF achieves 50%+ smaller files than PNG, outperforming even WebP.

Quality

Despite tiny file sizes, AVIF maintains excellent visual quality with minimal artifacts.

Transparency

AVIF fully supports alpha transparency, just like PNG.

Compatibility

Supported in Chrome, Firefox, and Safari 16+. Consider providing a fallback for older browsers.

The Most Aggressive Compression Leap Available Today

Converting PNG to AVIF represents the largest single-step file size reduction available among modern image formats. AVIF, based on the AV1 video codec developed by the Alliance for Open Media, employs intra-frame prediction, advanced transform coding, and film grain synthesis to achieve compression ratios that dwarf both WebP and JPG. A lossless PNG photograph of 4MB can typically be reduced to 200-350KB in lossy AVIF at quality 60 — a 10-20x reduction — while maintaining perceptual quality that rivals the original on standard displays.

The encoding process is computationally intensive compared to other formats. AVIF encoding at default speed settings can take 5-15 seconds per megapixel, versus milliseconds for JPG. This makes real-time server-side conversion impractical for high-traffic sites without caching. However, for pre-processed static assets — product catalogs, blog images, portfolio galleries — the encoding time is a one-time cost that pays dividends through dramatically reduced bandwidth. Netflix reported saving 50% bandwidth compared to JPG after adopting AVIF for title card images.

Browser support for AVIF has reached 92% globally as of early 2026, with Chrome, Firefox, Safari 16.4+, and Edge all offering full support. The remaining gaps are primarily older Safari versions on iOS 15 and below, and some embedded browser contexts. For content-heavy sites targeting modern audiences, AVIF delivers the best compression-to-quality ratio available. A 1200x800 hero image can weigh just 35-50KB in AVIF versus 180KB in WebP and 280KB in optimized JPG.

AVIF supports 10-bit and 12-bit color depth, HDR content, and wide color gamuts (BT.2020), making it future-proof for high-end displays. When converting from PNG, which is limited to 8-bit or 16-bit per channel in sRGB, the format transition is straightforward. However, AVIF's maximum dimension is 8193x4320 pixels in most implementations. For ultra-high-resolution images like panoramas or print-ready files exceeding this limit, you will need to tile the image or choose a different format.

Pro Tips

  • Expect Slower Encoding and Plan Accordingly

    AVIF encoding is 50-100x slower than JPG encoding due to the complexity of the AV1 codec. A 5MP image can take 8-12 seconds to encode in a browser-based WASM encoder. For batch processing of large image sets, start the conversion and let it run — the resulting file sizes (often 80-90% smaller than PNG) justify the wait.

  • Watch for Dimension Limits

    Most AVIF encoders cap image dimensions at 8193x4320 pixels. Panoramic photography, print-resolution artwork, and high-res scans in PNG format may exceed this limit. Check your image dimensions before converting, and consider downscaling or tiling oversized images to stay within AVIF's constraints.

  • Use Quality 50-65 for Web-Optimized Output

    AVIF's quality scale behaves differently from JPG — quality 50 in AVIF looks comparable to quality 82 in JPG. Start testing at quality 60 and decrease in increments of 5 until you notice degradation. Most photographic content looks excellent at quality 45-55, producing files that are 85-92% smaller than the source PNG.

  • Pair with WebP Fallback Using the Picture Element

    Since AVIF lacks support in roughly 8% of browsers, serve it as the primary source in an HTML picture element with a WebP or JPG fallback. This progressive enhancement strategy lets you capture AVIF's superior compression for the vast majority of users while maintaining universal compatibility.

Frequently Asked Questions

What is AVIF?

AVIF (AV1 Image File Format) is a modern image format based on the AV1 video codec. It offers the best compression ratios of any widely-supported image format.

Is AVIF better than PNG?

For file size, yes — AVIF files are typically 50%+ smaller than PNG. However, AVIF encoding can be slower and browser support is still growing.

Does AVIF support transparency?

Yes, AVIF fully supports alpha transparency, making it an excellent alternative to PNG for web graphics.

Why is AVIF conversion slower?

AVIF uses more complex compression algorithms. Our WebAssembly encoder handles it efficiently, but expect a few seconds for large images.