Convert WebP to PNG

The honest reason: some places still cannot open WebP

WebP is supported across current browsers, so a website does not need this conversion. The real destinations are older: a design tool that predates WebP, a print workflow, an email client that renders it badly, a CMS with a restrictive upload field, or a document format that does not support it. In those situations PNG is the reliable answer, and it is a genuine compatibility fix rather than a preference.

MDN: image file type and format guide

Why the file gets much bigger

PNG stores every pixel exactly, and WebP discarded some of them when it was created. So converting does not add the missing detail back, it simply stops throwing away what is left, and the result is substantially larger. This surprises people who expect a conversion to shrink a file. If the file size is the reason you were looking at this page, PNG is the wrong answer: WebP lossless is smaller, and for delivery WebP lossy is smaller still.

• PNG will be several times larger than the WebP in most cases.
• No detail is added. PNG just stops discarding more.
• If size is the goal, use WebP lossless or keep the WebP lossy.
• If you need an editable or archival master, PNG is the right choice.

NoteA conversion to PNG is a compatibility and quality-protection step, not a compression step.

When the lossless result genuinely helps

There is one strong argument for the larger file: you are going to edit it. Every save of a WebP discards a little more, so a sequence of edits produces a visibly softer image by the end. Converting to PNG once, at the start, makes every subsequent save lossless. The same applies to text and graphic edges, where PNG keeps the hard edges that a lossy format will always soften. In those cases the extra file size buys something real.

• Editing the image again: PNG makes every later save lossless.
• Text, logos, and sharp edges stay crisp in PNG.
• Archive a file you may need to re-edit years from now: PNG is safer.
• Export the final result to WebP or JPG afterwards to get the size back.

What does not change

The pixel dimensions are identical, the visible content is the same, and no sharpness is added. If the WebP already showed banding in a sky or a soft edge, that is preserved, because the damage is already in the pixels. Transparency does transfer, since both formats support a real alpha channel, so a transparent WebP becomes a transparent PNG without any fill colour being needed. That is a genuine advantage over a JPG conversion and one of the better reasons to choose PNG here.

• Dimensions and visible content are unchanged.
• No detail or sharpness is added.
• Existing artefacts in the WebP are preserved.
• Transparency transfers cleanly, which a JPG conversion would lose.