Will PNG to WebP lose quality?

At quality 80 the loss is not visible at normal viewing sizes. For pixel-perfect needs set quality to 100, which makes the WebP encoder near-lossless while still smaller than PNG.

Does WebP keep transparency?

Yes. WebP supports an alpha channel, so transparent PNGs stay transparent after conversion.

How much smaller is WebP than PNG?

For screenshots and graphics with flat colours expect 60–90 % smaller files. For photographs saved as PNG the reduction is often above 90 %.

Are my images uploaded to a server?

No. Decoding, resizing and encoding happen inside your browser using a background worker. The file is read from your device, converted locally, and the result is saved from your browser's memory. Nothing is transmitted.

Is there a file size or file count limit?

There is no upload limit because there is no upload. The only limit is your device's memory. The default maximum size of 4096 px on the longest side keeps even 100-megapixel photos safe on phones; you can clear it to keep the original dimensions.

PNG to WebP without uploading

Cut PNG file sizes by 60–90 % while keeping transparency. Everything happens on your device.

Drop images here or click to browse

PNG, JPEG, WebP, GIF, AVIF, HEIC where the browser can decode them

About this tool

PNG is lossless and large; WebP stores the same picture in a fraction of the space. A typical screenshot or UI graphic shrinks by 60–90 % at quality 80 with no difference you can see, and WebP keeps the alpha channel, so transparent logos and icons stay transparent.

This converter reads the PNG in your browser, re-encodes it with the browser's own WebP encoder and hands the result straight back to you. Nothing is uploaded, which is why it works offline once the page has loaded and why there is no size limit beyond your device's memory.

WebP is supported by every current browser, by WordPress, Shopify and most CMSs, and by image CDNs. If you still need a PNG for a specific tool, the same page can convert WebP back to PNG losslessly.

How it works

Drop your PNG files onto the page.
Leave the format on WebP and quality at 80, or raise it for graphics with fine gradients.
Click Save on each converted file.

Looking for a different conversion? Try PNG to WebP, JPG to WebP, WebP to PNG, Compress image or DOCX to PDF.

Frequently asked questions

Will PNG to WebP lose quality?: At quality 80 the loss is not visible at normal viewing sizes. For pixel-perfect needs set quality to 100, which makes the WebP encoder near-lossless while still smaller than PNG.
Does WebP keep transparency?: Yes. WebP supports an alpha channel, so transparent PNGs stay transparent after conversion.
How much smaller is WebP than PNG?: For screenshots and graphics with flat colours expect 60–90 % smaller files. For photographs saved as PNG the reduction is often above 90 %.
Are my images uploaded to a server?: No. Decoding, resizing and encoding happen inside your browser using a background worker. The file is read from your device, converted locally, and the result is saved from your browser's memory. Nothing is transmitted.
Is there a file size or file count limit?: There is no upload limit because there is no upload. The only limit is your device's memory. The default maximum size of 4096 px on the longest side keeps even 100-megapixel photos safe on phones; you can clear it to keep the original dimensions.