Does PNG to WebP keep transparency?
Yes. The alpha channel is carried into the WebP, so transparent and semi-transparent areas stay transparent. In a test, the corner pixel of a transparent PNG was still fully transparent in the result.
PNG to WebP Converter – Keep Transparency
Convert a PNG to a lossy WebP at 90% quality. Transparency is kept and the pixel size stays the same.
If this tool isn’t working as expected, please take a screenshot of the error and report the problem here so we can investigate and improve it.
About this tool
Re-encodes a PNG as a lossy WebP at a fixed 90% quality and keeps the alpha channel, so logos and UI images stay transparent. The saving depends on the image: a 1440×960 test photo went from 3.66 MB as PNG to 559 KB, while a 2.3 KB flat graphic only dropped to 2.26 KB.
The conversion runs in your browser, so the PNG is not uploaded.
This is a lossy conversion, not a lossless copy: fine detail can differ slightly from the PNG. Keep the PNG as the master if you may edit the image later, and use the WebP for delivery.
How to Use PNG to WebP Converter
Choose a PNG
Select a PNG file from your device.
Automatic conversion
The PNG is re-encoded as WebP at a fixed 90% quality. If your browser can't create WebP files, the tool shows a message instead of saving a mislabelled file.
Compare
Check the preview against the original, including any transparent areas.
Save the WebP
Download the file. It is named like image_converted_codittools.webp.
Common Workflows
Lightening PNG photos for a web page
Convert large PNG photos to WebP before adding them to a page. The 1440×960 test photo went from 3.66 MB to 559 KB.
Keeping a transparent cut-out
Icons and product cut-outs keep their transparent background in WebP. Compare the preview with the original before replacing the PNG.
Examples
A photo exported as PNG
Source
photo.png - 1440×960, 3.66 MBResult
photo_converted_codittools.webp - 1440×960, 559 KBSame pixel size at about a sixth of the file size. Figures are from the same 1440×960 test photo used elsewhere on these pages.
A flat graphic with transparency
Source
logo.png - 200×120, 2.3 KB, transparent backgroundResult
logo_converted_codittools.webp - 200×120, 2.26 KB, still transparentA flat graphic is already small as PNG, so WebP barely changes the size here.
Limitations
Lossy and fixed at 90%
There is no lossless mode and no quality setting. Keep the PNG for archives or later editing.
Savings vary
Photos shrink a lot. Flat graphics with few colors may hardly shrink at all.
Needs a browser that can encode WebP
If yours can't, the tool shows an error and doesn't produce a file.
Not accepted everywhere
Some older editors and upload forms still reject WebP. For those, PNG to JPG works, but it loses transparency.
FAQs
The output is lossy WebP at 90% quality with transparency kept. These answers deal with quality and how much smaller the file gets.
Is this a lossless conversion?
No. The tool saves WebP at a fixed 90% quality, which is lossy. It looks close to the PNG for most images but is not a pixel-for-pixel copy, and there is no lossless setting.
How much smaller will my WebP be?
It depends on the image. A 3.66 MB PNG photo became 559 KB, while a 2.3 KB flat graphic became 2.26 KB. Photos and images with gradients shrink most; simple graphics shrink least.
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