PNG to AVIF Converter with Transparent Batch and Lossless Mode
Create compact AVIF images from transparent PNG files. Choose a quality level or exact lossless encoding, process multiple images, and compare source and output sizes before downloading.
No files selected
Your files are uploaded only when you start conversion and are not retained after the response is created.
How to convert PNG to AVIF online
Upload PNG images, choose AVIF quality or lossless mode, then convert and download each result or a completed ZIP.
Upload PNG files
Choose up to 10 .png images, with a 20 MB and 40 megapixel limit per file.
Choose AVIF compression
Set quality from 20 to 100 for lossy compression, or enable Lossless AVIF to preserve decoded pixels exactly.
Download AVIF results
Convert the queue, compare file sizes, and download each AVIF or save multiple results in one ZIP.
PNG to AVIF quality, transparency, and limits
Lossy AVIF usually produces the smallest files. Lossless mode preserves decoded PNG pixels exactly but may create a larger result.
| Control | Setting | Effect |
|---|---|---|
| AVIF quality | 20-100 | Higher quality retains more detail and usually increases output size |
| Lossless mode | Optional | Preserves decoded PNG pixels exactly while usually producing a larger AVIF |
| Transparency | Preserved | Keeps the PNG alpha channel in the AVIF output |
| Dimensions | Preserved | Keeps source width and height up to the 40 megapixel safety limit |
| Batch size | Up to 10 files | Converts files independently and offers a combined ZIP download |
PNG vs AVIF compression and image quality
AVIF can reduce web image size substantially while preserving transparency, but lossy settings discard some pixel detail.
| Characteristic | Source | Output |
|---|---|---|
| Compression | Lossless DEFLATE compression | AV1-based lossy or lossless image compression |
| Transparency | Supported | Supported and retained by this converter |
| Typical file size | Often large for photographs | Usually smaller in lossy mode; result varies by image |
| Browser support | Universal | Current major browsers; older apps may not open AVIF |
| Color detail | Exact stored pixels | Controlled by quality, or exact decoded pixels in lossless mode |
| Metadata | May contain profiles or text chunks | Visible pixels and alpha are encoded; source metadata is not copied |
What happens during PNG to AVIF conversion
The endpoint validates the PNG, decodes its pixels and alpha channel, removes source metadata, and returns a newly encoded AVIF response without retaining the file.
Real AVIF output
The response uses a valid AVIF container and AV1 image payload. It is not a renamed PNG file.
Transparent PNG supported
Alpha transparency is preserved in both lossy and lossless AVIF output.
Smaller is not guaranteed
Simple PNG graphics or lossless AVIF can occasionally be larger. Compare the displayed source and output bytes.
Processed without retention
Files are held in request memory, encoded for the response, and not written to conversion storage or retained after the response.
Related PNG and AVIF tools
Use a separate page when the conversion direction or source image format changes.
PNG to AVIF converter FAQ
How do I convert PNG to AVIF?
Upload one or more PNG files, choose an AVIF quality or enable lossless mode, then select Convert to AVIF and download each result or a ZIP.
Is this PNG to AVIF converter free?
Yes. You can convert batches within the displayed file count, size, and dimension limits without creating an account.
Does PNG to AVIF preserve transparency?
Yes. The PNG alpha channel is retained in both lossy and lossless AVIF files.
Can I batch convert PNG to AVIF?
Yes. Add up to 10 PNG files, convert the queue, then download files individually or together in a ZIP archive.
Can I convert PNG to AVIF without losing quality?
Yes. Enable Lossless AVIF to preserve the pixels decoded from the PNG exactly. Lossless output may be larger than a quality-controlled lossy AVIF.
Why did PNG to AVIF lose quality or look pixelated?
Lossy AVIF quality settings discard some detail. Increase the quality value or enable lossless mode when exact edges, text, or pixel art matter.
Is AVIF always smaller than PNG?
No. AVIF is often smaller for photos and complex graphics, but simple images, tiny files, or lossless mode can produce a larger result.
Are my PNG files retained?
No. Files are uploaded to the conversion endpoint, processed in request memory, returned as AVIF responses, and not written to retained conversion storage.
Does the AVIF keep PNG dimensions and metadata?
Width, height, and transparency are preserved within the 40 megapixel limit. PNG text chunks, comments, and other source metadata are not copied.
What AVIF quality should I choose?
Start at 60 for a practical balance. Use 75-90 for detailed graphics, 35-55 for smaller web images, or lossless mode for exact decoded pixels.
Can I use AVIF on a website?
Yes. Current Chrome, Edge, Firefox, and Safari support AVIF. Keep a PNG or WebP fallback when older browsers or editing software must be supported.
Create smaller transparent AVIF images
Choose PNG files, select lossy quality or lossless encoding, and download a real AVIF batch.
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