anytools
Image · 55 tools · nothing uploads

AVIF to PNG

Save an AVIF as a PNG. Decoding lands on 8-bit RGBA first, so a 10-bit AVIF is flattened before PNG stores the result losslessly.

Input

AVIF to PNG hands you eight bits a channel, four bytes to a pixel, whatever depth the AVIF was written at. PNG then keeps what is left exactly, alpha and all, in a file that dwarfs the AVIF. Ten and twelve bit files are flattened by the decoder before PNG is asked to store a thing.

Questions

Does a 10-bit AVIF keep its extra bit depth?

No. Decoding lands on 8-bit RGBA pixels regardless of the source bit depth, so a 10-bit AVIF is flattened to 8 bits before PNG stores anything, the same as every format in this pipeline.

What survives?

The full 8-bit color and alpha channel survive, and PNG stores them losslessly from that point on. Any HDR-specific metadata the AVIF carried does not carry across.

Which engine handles this?

jSquash decodes the AVIF and encodes the PNG, both WebAssembly, running in Node, on the command line, through MCP and in the browser without needing a browser tab specifically.

How much bigger does the file get?

Often several times bigger, since AVIF compresses aggressively and PNG has no lossy shortcut once decoding lands on raw pixels.

What is the reverse page?

There is no dedicated page. Convert image can write AVIF from a PNG source, without a page of its own for that direction.

Related Image tools

n→nHEIC to JPGTurn an iPhone HEIC photo into a JPG for Windows and for upload forms. There is no way back: nothing here writes HEIC, and no encoder exists.Runs on each file you dropn→nPNG to JPGFlatten a PNG into a JPG. Transparency has nowhere to go and arrives as a solid block, and hard edges are the exact thing JPEG rings around.Runs on each file you dropn→nJPG to PNGRewrite a JPG as a lossless PNG. Every block edge and ring the JPEG already baked in is copied across exactly, in a much larger file.Runs on each file you dropn→nWebP to JPGTurn a WebP into a JPG. Any alpha is flattened onto a background nobody picked, and a lossy WebP is put through a second lossy encoder.Runs on each file you dropn→nPNG to WebPRe-encode a PNG as WebP. The alpha channel survives and the losslessness does not, because quality defaults to 80 and text edges are redrawn.Runs on each file you dropn→nJPG to WebPRe-encode a JPG as WebP. The old compression artefacts are picture now, so the WebP encoder spends bits keeping them rather than clearing them.Runs on each file you dropn→nWebP to PNGStore a WebP as a lossless PNG. The transparency survives, so do the details WebP already discarded, and the file grows several times over.Runs on each file you dropn→nAVIF to JPGOpen an AVIF as a JPG. The same picture costs several times more bytes here, because JPEG needs them to look the way the AVIF looked.Runs on each file you drop