AVIF to PNG: help & limits

Use PNG when your next editor needs a conventional image file with transparent areas intact. Reqly converts a supported still AVIF into PNG without adding JPEG compression. The checkerboard in the preview indicates transparency and is not saved into the picture. PNG files can be considerably larger, and browser color conversion can change the appearance of HDR or wide-gamut sources.

How to use

1. Select one supported still AVIF image.
2. The browser decodes it locally and creates a PNG. Inspect transparent edges and compare the preview with Original.
3. Download the PNG after checking its measured size. Choose AVIF to JPG if you need JPEG compatibility and do not need transparency.

Supported files

Still AVIF · Up to 64 MiB · 64 megapixels. One image at a time. Maximum 16,384 pixels per edge and 128 MiB output.

How it works

The bounded container inspection checks still-image brands and declared dimensions. Native browser decoding supplies pixels to an offscreen canvas, which encodes PNG. Reqly verifies the PNG signature and dimensions. PNG avoids an additional lossy JPEG encode; it does not reverse the compression already applied to the AVIF.

Examples

Limitations

• Requires native browser support for decoding the selected AVIF variant. A failed decode is reported without sending the image elsewhere.
• AVIF animation and sequences are unsupported. Exact HDR/color-profile appearance, higher bit depth and source metadata are not guaranteed to survive.
• PNG can exceed the source size and the 128 MiB output limit. Low-memory devices may fail below the stated input limits.

Privacy

Reading the container, decoding pixels and building the PNG all happen locally. No filename, metadata value or file bytes are sent to a server. Reset stops active processing and releases the image references retained by the tool.

Common questions