PNG to WebP Converter

You have PNG images for a website, such as logos, interface graphics or product cut-outs with transparent backgrounds, and you would like lighter files. WebP can carry transparency like PNG. This converter creates WebP files locally and shows the size change for each one, so you can decide per image whether the swap is worth it.

Drop images here, click to choose, or paste with Ctrl+V
PNG files · many files at once · nothing is uploaded

How to convert PNG to WEBP

  1. Add your PNG files by dropping them, clicking the drop zone or pasting.
  2. The output format is already set to WEBP. Adjust quality or size if you need to.
  3. Press Convert and compare the original and new size for each file.
  4. Download each file or all of them as a ZIP.

When to convert, and when not to

  • You want web graphics with transparency in a lighter format.
  • Your visitors use current browsers that open WebP.
  • You want to compare formats on your own images.
  • Keep the PNG when you need pixel-perfect edges for further editing or software that cannot read WebP.

What changes

  • The picture is saved as lossy WebP, so it is no longer an exact copy of the PNG.
  • Transparent areas stay transparent.
  • The quality slider trades size against softness.
  • Metadata is not carried over.
  • Older programs may not open the result, so keep your PNG original.

Transparency survives the change

Unlike JPG, WebP supports an alpha channel, so cut-out logos, icons and product images keep their see-through background. That makes PNG to WebP a natural step for site graphics where JPG would force a solid background.

Check soft edges after converting. Drop shadows and anti-aliased outlines are the places where lossy compression is most likely to show, especially at lower quality values.

Lossy trade-offs for sharp graphics

A PNG is lossless. Our WebP output is lossy, controlled by the slider. For photographs, the difference is hard to see at sensible settings. For flat colour, thin lines and small text, artefacts can show up around the edges. Preview the converted file at full size, and raise the quality if lettering looks smudged.

If you need a perfect copy of the pixels, stay with PNG. This converter does not offer a lossless WebP mode, so the choice is between exact PNG and smaller lossy WebP.

Compare before replacing anything

Savings vary. A photographic PNG may shrink a lot, while a tiny icon might change little. Convert a few images from your project, read the sizes shown on each row, and only then decide what to replace. Your original files are never altered by this tool.

Choosing between PNG, WebP and JPG

For graphics with transparency, WebP is usually the only lighter alternative to PNG that keeps the see-through background. For photographs without transparency, JPG and WebP both work, and the comparison is worth running on your own pictures. For files you need to edit or archive, PNG remains the safest choice because it is an exact record of the pixels.

This page is meant for the delivery step: when your artwork is finished and you are preparing copies for a site or app. Keep the PNG masters in a separate folder so you can always regenerate the WebP with different settings.

A review routine that takes five minutes

Convert a few typical images. Place each WebP and its PNG on the same background and view them at full size. Look at thin lines, text, shadows and gradients. If anything looks worse than you accept, raise the quality and convert again. When the results look right, convert the rest of the batch and download the ZIP.

Remember that WebP is a delivery format here. If your design changes, edit the PNG or the original artwork and convert again, rather than editing the WebP, because each round of lossy saving can add a little more softness. Keeping the source and the converted copy side by side in clearly named folders prevents mix-ups on busy projects.

Privacy: your files stay on your device

  • The tool decodes, resizes and encodes your pictures with your browser. The files are never sent to a server.
  • To check it yourself: open the browser developer tools (F12), open the Network tab, convert a file, and look for any request that carries your image. You will see none.

Frequently asked questions

Is the WebP lossless?

No. This tool writes lossy WebP, controlled by the quality slider.

Does WebP keep my transparent background?

Yes.

Why does my logo look slightly different?

Lossy compression can soften edges. Raise the quality value.

Will every program open the file?

Not all do. Keep the PNG for software without WebP support.

Is my image uploaded?

No. It stays in your browser.

Can I convert PNG files with text in them?

Yes, but check the lettering at full size, since lossy compression can soften small text.

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