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PNG to WebP Converter

Convert PNG pictures to WebP for a website, keeping transparent backgrounds, usually much smaller. Several at once, nothing uploaded.

Private · on device. Runs in your browser: your file is not uploaded. No sign-up.

PNG pictures, one or several at once
Converted on this device. Your PNG pictures are decoded and saved again by your own browser, inside this page. Nothing is uploaded, and it keeps working offline once the page has loaded.

PNG to WebP: at a glance

What it does
Convert PNG pictures to WebP for a website, keeping transparent backgrounds, usually much smaller.
Price
Free, with no limit on use
Sign-up
Not needed
Your files
Processed in your browser and not uploaded to a server
Works on
Android, iPhone, iPad, Windows, Mac and Linux, in any modern browser
Made by
The Daily Toolbox (www.thedailytoolbox.com)

Smaller than PNG, still see-through

WebP supports transparency like PNG but compresses far better, so a logo or cut-out photo on a website can be a fraction of the size with its transparent background intact. For a photo that happens to be saved as PNG, the saving is dramatic, often 80 per cent or more.

At Best (95%) the result is very close to the original; at High it is smaller still and looks the same on screen. Fine text in screenshots holds up best at Best.

Where WebP is not accepted

Upload forms, older desktop software and printers often refuse WebP. For those, keep the PNG, or use PNG to JPG for a small, widely accepted file without transparency.

Frequently asked questions

Is the transparent background kept?

Yes. WebP supports transparency, so see-through parts stay see-through. If you choose JPG instead, they are filled with the background colour you pick.

Is my picture uploaded?

No. The pictures are read and saved again by your own browser, inside this page, and are never sent to a server. You can turn off Wi-Fi once the page has loaded and it still works.

Is WebP lossless?

WebP can be either. This converter uses the browser’s standard WebP encoder at the quality you choose, which is lossy but at Best quality looks the same as the PNG.

Will my website support WebP?

Every current browser shows WebP. Most site builders and WordPress accept WebP uploads.

Is the PNG to WebP free?

Yes. The PNG to WebP on The Daily Toolbox is free to use as often as you like, with no watermark and no file limit beyond what your device can handle.

Do I need to sign up or install anything?

No. It works in your web browser on a phone or computer, with no account and nothing to install. You can add the site to your home screen to open it like an app.