PNG to AVIF — Format Comparison & Online Converter
Fast, instant PNG to AVIF conversion. No signup required. Just drop your .png file and get .avif in seconds.
Batch Settings
Some metadata may not survive
Your PNG file may contain tEXt, iTXt metadata. AVIF has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
Color depth reduction: 48-bit → 12-bit
PNG stores up to 48 bits per channel, but AVIF supports only 12 bits. You may notice banding in smooth gradients (like sky or skin tones) where subtle color transitions are lost.
高品質な画像をウェブで共有する際、ファイルサイズが懸念されることは少なくありません。特に、緻密な表現が求められる漫画やイラスト、あるいはビジネスシーンでの資料など、画質の劣化は避けたいものです。PNGは透明度を保持し、細部まで鮮明に表現できる優れたフォーマットですが、その分ファイルサイズが大きくなりがちです。そこで注目されているのが、次世代の画像フォーマットAVIFです。AVIFはPNGの利点を維持しつつ、より高い圧縮率を実現し、ウェブページの読み込み速度向上に貢献します。このページでは、大切なPNG画像をAVIFへ変換し、その魅力を最大限に引き出すお手伝いをいたします。
- ウェブコミック・漫画の配信
- ビジネス資料の軽量化
- 縦書きテキストを含むデザイン
日本のウェブ環境では、依然としてPNGの利用が多いですが、高速表示が求められる現代において、AVIFは特に漫画やイラストのような画像リッチなコンテンツの読み込み体験を向上させる上で非常に有効です。
About PNG to AVIF Conversion
PNG (introduced 1996) and AVIF (introduced 2019) are both image formats, but they differ in important ways. PNG uses lossless compression and supports transparency, making it perfect for graphics, logos, and screenshots. AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality.
Full Name: PNG uses Portable Network Graphics, while AVIF uses AV1 Image File Format. Compression: PNG uses Lossless, while AVIF uses Lossy & Lossless. Transparency: PNG uses Yes, while AVIF uses Yes.
When you convert PNG to AVIF, the goal is to optimize files for fast web delivery. Converting PNG to AVIF maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your PNG file is decoded and re-encoded as AVIF. The conversion involves 4 steps: (1) your png file is uploaded and the format is validated, (2) the file content is decoded into its raw representation, (3) the data is re-encoded in avif format with optimal settings, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you You need a file that works in web browsers. For the opposite direction, CocoConvert also supports AVIF to PNG conversion.
How to Convert PNG to AVIF
- 1
Upload .png file
Select your PNG file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .avif
Set AVIF as the output format. The converter uses optimal settings based on the PNG→AVIF conversion profile.
- 3
Convert
The server-side engine decodes your PNG file and re-encodes it as AVIF. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .avif file. Multiple output files can be downloaded together.
What Happens When You Convert PNG to AVIF
Your PNG image is decoded into raw pixel data, then re-encoded as AVIF.
Your PNG file is decoded — the compressed/stored pixel data is expanded into raw RGBA (with alpha channel) pixels
Pixels are re-encoded using AV1 Image File Format's lossless compression
Metadata (EXIF, ICC profiles) is transferred where AVIF supports it
The AVIF file is saved and ready for download
PNG vs AVIF — Detailed Comparison
| Feature | .PNG | .AVIF |
|---|---|---|
| Full Name | Portable Network Graphics | AV1 Image File Format |
| Compression | Lossless | Lossy & Lossless |
| Transparency | Yes | Yes |
| Animation | No | Yes |
| Color Depth | 8 or 16 bits/channel (up to 48-bit color) | 10 or 12 bits/channel |
| HDR Support | No | Yes |
| Typical File Size | 5–20 MB per photo, <1 MB for graphics | 50% smaller than JPEG at same visual quality |
| Platform Support | Universal | Limited |
| Browser Support | Universal | modern browsers |
| Year Created | 1996 | 2019 |
| Open Standard | Yes | Yes |
Should You Convert PNG to AVIF?
When to Convert
- ✓You need a file that works in web browsers
Frequently Asked Questions
What is the difference between PNG and AVIF?
PNG uses lossless compression and supports transparency, making it perfect for graphics, logos, and screenshots. AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality. Full Name: PNG uses Portable Network Graphics, while AVIF uses AV1 Image File Format. Compression: PNG uses Lossless, while AVIF uses Lossy & Lossless. Transparency: PNG uses Yes, while AVIF uses Yes.
Does PNG to AVIF conversion affect quality?
Converting PNG to AVIF maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, PNG or AVIF?
PNG uses lossless compression. AVIF uses both compression. The better choice depends on whether you prioritize file size or quality.
How long does PNG to AVIF conversion take?
Most conversions finish in seconds. Larger files or complex image content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is PNG or AVIF better for long-term storage?
PNG is better for archival since it's lossless.
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