Convert PNG to AVIF Online
Convert PNG images to AVIF for ultra-compact file sizes with full alpha transparency. Free, private, browser-based conversion. Processed locally in your browser memory — your photos never leave your device.
Drop an image here
or choose files (single or batch)
JPG · PNG · WebP · AVIF · HEIC
Why Convert PNG to AVIF?
Transform heavy transparent PNG graphics into lightweight AVIF images that load in milliseconds while maintaining crisp transparent borders.
Pro Quality Tip: 65% – 70% preserves sharp graphics and transparent edges with massive byte savings.
Technical Comparison: PNG vs AVIF
| Feature Specification | PNG (PNG) | AVIF (AVIF) |
|---|---|---|
| Full Name | PNG (Portable Network Graphics) | AV1 Image File Format |
| File Extension | .png | .avif |
| MIME Type | image/png | image/avif |
| Compression Type | Lossless | Lossy |
| Alpha Transparency | Supported | Supported |
| Developer / Creator | W3C & PNG Development Group | Alliance for Open Media (AOMedia) |
| Encoding Algorithm | Deflate (LZ77 + Huffman) | AV1 Video Codec Intra-frame |
| Color Depth Support | Up to 48-bit Truecolor + 16-bit Alpha | 10-bit and 12-bit High Dynamic Range (HDR) |
| Relative File Weight | Large for photos; Compact for graphics | 50% smaller than JPG; 20% smaller than WebP |
| Browser Compatibility | 100% Universal (All browsers) | 93%+ (Chrome, Edge, Firefox, Safari 16+) |
How to Convert PNG to AVIF in 3 Simple Steps
Select or Drop Image
Drag your PNG file into the converter or click to browse from your device.
Adjust Settings (Optional)
Fine-tune compression quality or scale dimensions while keeping aspect ratios locked.
Download AVIF
Click Convert and save your optimized AVIF image instantly to your computer or phone.
PNG to AVIF FAQs
Answers to common questions about converting PNG into AVIF
How do I convert PNG to AVIF without uploading to a server?
Our converter runs entirely inside your web browser using HTML5 Canvas and WebAssembly. When you drag in your PNG file, your device processor decodes the pixels and generates the AVIF file in temporary local memory. Your image never travels over the internet.
Will converting from PNG to AVIF reduce image quality?
Converting to AVIF uses lossy compression. You can use our quality slider (set to 85% by default) to achieve the exact balance of sharp visual quality and lightweight file size you need.
Why choose this PNG to AVIF converter over cloud tools?
Most online tools upload your confidential photos to remote cloud servers, exposing you to privacy risks, queue wait times, and file size limits. ConvertImage processes everything locally in milliseconds with zero uploads, no watermarks, and complete privacy.
Can I batch convert multiple PNG files to AVIF?
Yes! You can drag and drop multiple PNG files at once. The converter queues and processes each image through background Web Workers for smooth multitasking without freezing your browser.