Convert PNG to AVIF Online - Free & Private
Converting PNG to AVIF produces some of the largest file size reductions available - often 60-75% smaller than the original PNG. AVIF supports transparency and is the recommended format for performance-critical web images. For photographic PNGs (a common mistake in web publishing), the reduction can exceed 80%. All conversion runs locally in your browser.
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Why convert PNG to AVIF?
Dramatically smaller than PNG with full quality
Why Convert PNG to AVIF?
PNG files are reliable but large. A standard PNG screenshot or graphic often runs 300KB to 1MB. AVIF delivers the same visual quality at 40–60% smaller file sizes, making it the highest-impact format upgrade for web delivery in 2026.
Converting PNG to AVIF is most effective for: • UI screenshots and diagrams — AVIF preserves edge clarity at a fraction of the PNG file size • Transparent graphics such as logos and icons — AVIF supports full alpha channel transparency • Hero images and feature graphics on landing pages where LCP scores depend on fast image delivery • Blog and documentation images where large content libraries create cumulative page weight problems
File Size and Quality
AVIF files converted from PNG are typically 40–60% smaller than the source PNG at equivalent visual quality. For flat-colour graphics and UI elements, AVIF lossless mode preserves pixel-perfect quality while achieving 20–30% size reduction over PNG. For photographic content within PNG files, lossy AVIF at quality 80 is visually indistinguishable from the original at normal screen sizes.
Browser Support in 2026
AVIF is supported in Chrome 85+, Edge 121+, Firefox 113+, Safari 16+, and Samsung Internet 14+, covering approximately 93–94% of global browser traffic. Serve a WebP fallback for older browsers using the <picture> element: <picture> <source srcset="image.avif" type="image/avif"> <source srcset="image.webp" type="image/webp"> <img src="image.png" alt="Description"> </picture>
Frequently Asked Questions
Does PNG to AVIF conversion preserve transparency?
Yes. AVIF supports full alpha channel transparency. Transparent areas in your PNG are preserved exactly in the converted AVIF file. No background is added and no transparency is lost during conversion.
Is AVIF better than WebP for PNG conversion?
For most static web delivery, yes. AVIF achieves 20–50% better compression than WebP at equivalent visual quality. The trade-off is encoding speed: AVIF encodes 3–5x slower than WebP, which matters only for real-time server-side workflows. For pre-converting assets before deployment, AVIF is the better choice.
Will the converted AVIF look different from my PNG?
In lossless mode, the output is pixel-identical to the source. In lossy mode at quality settings above 75, the difference is not visible at standard display sizes. MeloTools defaults to a balanced quality setting that preserves visual fidelity for typical web use.
Is my PNG file safe to convert here?
Yes. The conversion runs entirely in your browser. Your PNG file never leaves your device and is not stored or accessible to MeloTools or any third party. You can verify this by watching the Network tab in browser DevTools during conversion.
What is the maximum PNG file size?
The free plan supports PNG files up to 5MB per image. Premium increases this to 75MB per image for larger assets and high-resolution design exports.