PNG to AVIF Converter
Create a lossy AVIF delivery copy from a PNG in the browser where supported, then compare measured size, detail, alpha edges, and destination support before publishing.
What AVIF does to a heavy PNG
PNG to AVIF Converter creates an AVIF delivery copy from a PNG and can retain transparency where the encoder and destination support it. The size difference depends on image content, dimensions, encoder mode, and quality; flat graphics, screenshots, and photographic PNGs can produce very different results. Compare actual bytes and inspect small text, edges, gradients, and alpha detail.
The conversion code runs in your browser where supported and does not intentionally upload the selected image for encoding. Ordinary page, consent, or diagnostic requests may still occur. Keep the PNG master, confirm the destination accepts AVIF, and use the new file only when the measured result justifies it.
When AVIF pays off and when to keep the PNG
AVIF is worth testing for supported web delivery, particularly when a photographic or complex PNG is large. A text-heavy screenshot or flat illustration may need a higher quality setting and may show little useful saving. Verify transparency and fallback behavior in the real publishing pipeline.
Keep the PNG original for future edits, broader software compatibility, or workflows that require a known lossless source. Do not use this browser converter for medical, forensic, or other fidelity-critical imagery without an approved validation process; its quality slider produces lossy AVIF.
How lossy and lossless AVIF differ
PNG uses lossless encoding, while this tool’s quality slider produces lossy AVIF. The export can reduce bytes, but it can also soften text, edges, gradients, or transparent detail, and no quality percentage predicts the result for every file. Compare the source and output at the intended display size and keep PNG when exact source pixels or a lossless editing master matter.
AVIF, WebP, JPG, and PNG Compared
PNG stores its raster losslessly, but its size relative to AVIF, WebP, or JPG depends on the image and settings. Use the table as a starting point, then compare actual files and the receiving workflow.
| Format | Compression | Transparency | Best For | Website Impact |
|---|---|---|---|---|
| PNG | Lossless | Yes | Editing, archival, screenshots, sharp-edged diagrams, print assets | Can be larger for some web assets; remains useful for tested lossless or alpha workflows |
| JPG | Lossy | No | Photographs, email attachments, legacy systems, print submissions | Smaller than PNG for photos but no transparency support |
| WebP | Lossy or lossless | Yes | General web delivery with broad browser compatibility | Often a useful balance of size and compatibility; verify the supported clients |
| AVIF | Lossy or lossless | Yes | Testing supported web delivery with alpha, HDR, or wide-gamut sources | Size varies by content and settings; verify support and a fallback |
How To Convert PNG To AVIF Here
- Upload one or more PNG files from your device using the file picker or drag and drop.
- Adjust the AVIF quality slider to test file size against visual detail for your use case.
- Click Convert and let the browser encode an AVIF copy on the device where supported.
- Download the result and verify size, hard edges, soft alpha, colour, and destination support before choosing it.
Avoidable Mistakes When Moving To AVIF
Deleting the original PNG after converting. Keep your lossless PNG as the master file for future edits; use AVIF only for delivery.
Using AVIF where transparency is needed but the destination does not support the format. Verify that the CMS, email client, or platform can render AVIF with alpha.
Setting quality too low for graphics with fine details. Screenshots and text-heavy images need higher quality settings than photographs to avoid visible artifacts.
Serving AVIF without checking every supported client. Provide and test a WebP or PNG alternative when the actual audience or publishing system needs one.
Frequently Asked Questions
Should I use lossless or lossy AVIF when converting a PNG?
This tool's quality slider produces lossy AVIF, so it can change pixels and should be treated as a delivery-copy workflow. Use a dedicated lossless encoder when exact decoded pixels are required, and compare its actual result with PNG because lossless AVIF is not guaranteed to be smaller.
Does AVIF compress a flat-color PNG graphic as dramatically as a photo?
A flat graphic may already compress efficiently as PNG, so AVIF can show little saving or even be larger at the quality you need. Compare bytes and sharp edges, then weigh any measured change against destination support and fallback complexity.
Will a transparent PNG keep its alpha when converted to AVIF?
AVIF supports alpha, and this encoder is intended to retain transparency. Verify soft edges, partial alpha, and shadows in the downloaded file and in the destination, because encoder and decoder support can differ. Keep a tested fallback where needed.
Related Converters
PNG to AVIF can be a web-optimization step when testing a modern format against a heavy PNG source. Compare the actual file size, transparency, edge detail, and destination support before choosing the AVIF result.
AVIF to PNG
Go the other direction when you need to convert AVIF back to PNG for editing or legacy compatibility.
Open AVIF to PNGPNG to WebP
Choose WebP when you need broader browser support than AVIF currently offers with good compression.
Open PNG to WebPJPG to AVIF
Convert JPG photographs to AVIF when your source images are in JPG format instead of PNG.
Open JPG to AVIFCompress Image
Reduce file size further after format conversion when upload limits or page speed are critical.
Open Compress ImagePNG to JPG
Convert PNG to JPG when you need smaller files without transparency for email or legacy uploads.
Open PNG to JPGImage Format Converter
Pick any output format when you are not sure whether AVIF, WebP, JPG, or PNG fits best.
Open Image Format Converter