Convert PNG to AVIF Online Free
The ultimate PNG upgrade. 70–90% smaller files with transparency intact.
ToFormat — free online converter
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Max file size: 30MB · Up to 20 files at once
Why ToFormat?
70–90% Smaller Than PNG
AVIF's next-gen compression crushes PNG file sizes. A 3 MB PNG graphic becomes 300–900 KB in AVIF — the most aggressive size reduction available in any modern format today.
Transparency & HDR Preserved
AVIF carries a full alpha channel plus 10-bit and 12-bit color depth. Your transparent logos and wide-gamut graphics survive the conversion with richer color than PNG's 8-bit palette.
Best-in-Class Compression
AVIF outperforms every mainstream format: 50% smaller than JPG, 30% smaller than WebP, and 70–90% smaller than PNG. Built on the AV1 codec by Google, Apple, Mozilla, and Netflix.
About the Formats
🎨 What is PNG?
PNG (Portable Network Graphics) was created in 1996 as a patent-free alternative to GIF. It uses lossless DEFLATE compression and supports full alpha transparency — the go-to format for logos, icons, screenshots, and UI assets. PNG preserves every pixel but produces significantly larger files than modern alternatives.
All PNG conversion tools →🚀 What is AVIF?
AVIF (AV1 Image File Format) is the most advanced image format in 2025, built on the royalty-free AV1 video codec by the Alliance for Open Media. It delivers the best compression ratio of any mainstream format, supports transparency, HDR, wide color gamut, and both lossy and lossless modes.
All AVIF conversion tools →How to Convert
Upload your PNG
Click the upload area or drag and drop your PNG files. Batch upload up to 20 images at once.
Adjust quality
Use the quality slider to balance size and fidelity. For lossless output, set quality to 100%. Default 80% is ideal for web use.
Download AVIF
Your compressed AVIF is ready. Download within 10 minutes before automatic deletion.
When to Convert PNG to AVIF
🌐 Web Performance
PNG is the heaviest common format on the web. Converting to AVIF cuts image payload by 70–90%, delivering the biggest possible LCP improvement. Google Lighthouse flags PNG as the top optimization opportunity.
💡 Wider browser support: try PNG to WebP →🎨 Design & UI Assets
Icons, illustrations, and UI graphics with transparency are perfect for AVIF. You get the same alpha precision as PNG — with 10-bit color depth and files 80% lighter.
💡 Universal editing: try PNG to TIFF →📸 Photography & HDR
PNG is often used for lossless photo editing. AVIF preserves wide color gamut and HDR metadata while dramatically reducing storage. Ideal for photographers who need small files without banding.
💡 Apple ecosystem: try PNG to HEIF →💾 Storage & Bandwidth Savings
Reduce cloud storage and CDN costs by up to 90%. AVIF is supported by Cloudflare, Fastly, and AWS CloudFront for automatic content negotiation — upload once, serve optimally everywhere.
💡 Broader compatibility: try PNG to WebP →Format Comparison
| Format | PNG | AVIF |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
| File Size | Larger | Smaller |
Need wider browser support? PNG to WebP covers 97%+ browsers vs AVIF's 93%+. For lossless pixel-perfect archival, keep your PNG or try PNG to TIFF.
💡 Pro Tips
- AVIF lossy at quality 80% is visually indistinguishable from the original PNG but 70–90% smaller. Start there — you'll be amazed at the difference.
- For lossless AVIF (quality 100%), files are still significantly smaller than PNG — AVIF lossless beats PNG by 30–50% on graphics with flat colors and sharp edges.
- Transparent PNGs see the biggest gains. A 1 MB PNG logo with alpha becomes 100–200 KB in lossy AVIF — same transparency, fraction of the size.
- Serve AVIF with a WebP middle layer and PNG fallback via
<picture>for maximum browser coverage. The three-tier stack covers 100% of users. - Google PageSpeed Insights now prioritizes AVIF over WebP in its recommendations. Switching from PNG to AVIF can improve Lighthouse scores by 15–25 points.
- AVIF supports 10-bit and 12-bit color — over 1 billion shades vs PNG's 16.7 million. Wide-gamut displays show the difference, especially in gradients and photography.
- AVIF encoding is slower than WebP (1–3 seconds vs under 1 second), but the 30% additional compression over WebP makes it worth the wait for production assets.
How PNG to AVIF Conversion Works
AVIF represents the most significant advance in image compression since PNG debuted in 1996. Built on the AV1 video codec — a royalty-free, open standard from the Alliance for Open Media (Google, Apple, Mozilla, Netflix, Amazon) — AVIF brings video-grade compression efficiency to still images.
When you convert PNG to AVIF, our encoder decodes PNG's lossless pixel data and re-encodes it using AVIF's advanced toolset: variable superblocks up to 64×64 pixels, intra-frame prediction, directional prediction modes, and context-adaptive binary arithmetic coding. For transparent PNGs, the alpha channel is encoded separately with its own optimized compression pass.
In lossy mode (default), AVIF achieves 70–90% smaller files than PNG by intelligently discarding imperceptible detail. In lossless mode (quality 100%), AVIF still outperforms PNG by 30–50% through superior entropy coding. The process runs entirely server-side in 1–3 seconds. Files are deleted within 10 minutes.
PNG vs AVIF: Compression Compared
PNG uses DEFLATE lossless compression — reliable but limited. It preserves every pixel perfectly, making it the standard for graphics requiring exact reproduction. The cost is file size: a typical PNG icon set, screenshot, or illustration ranges from 500 KB to 10 MB. PNG supports 8-bit and 16-bit color with full alpha transparency, but offers no lossy mode, no HDR, and no animation.
AVIF offers both lossy and lossless compression in a single format. In lossy mode, AVIF uses perceptual modeling to remove data the human eye cannot detect — achieving 70–90% smaller files than PNG with no visible quality difference. In lossless mode, AVIF's advanced entropy coding and prediction still beats PNG by 30–50%.
AVIF adds capabilities PNG lacks: 10-bit and 12-bit color depth (1+ billion colors vs 16.7 million), HDR tone mapping, wide color gamut (BT.2020), and animation support. For transparent graphics specifically, lossy AVIF at quality 80% delivers the same visual result as PNG at 10–20% of the file size. For a comparison with WebP, see our WebP conversion tools.
AVIF Browser & Platform Support (2025)
AVIF is supported by Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+, and Opera — over 93% of global browser traffic per Can I Use. The remaining gap consists primarily of older iOS/iPadOS versions and legacy enterprise browsers.
For production websites, the recommended approach is a three-tier <picture> element: AVIF as the primary source, WebP as the middle layer (97% support), and PNG as the universal fallback. CDNs like Cloudflare, Fastly, Imgix, and AWS CloudFront automate this through Accept-header content negotiation — upload once and every visitor receives the optimal format automatically.
Beyond browsers, AVIF is natively supported in Android 12+, Windows 11 Photos, GIMP 2.10+, Adobe Photoshop 25+, and macOS Ventura+. Apple added AVIF support in Safari 16.4 and iOS 16.4. See all our AVIF conversion tools for more format pairs, or explore PNG converters for alternative output formats.
Frequently Asked Questions
<picture> element.