PNG to WebP Converter

About the PNG to WebP Converter

WebP usually produces much smaller files than PNG while keeping transparency and sharp detail, which makes it ideal for graphics and screenshots on fast-loading web pages. This tool converts your PNGs to WebP locally in your browser — no upload — and lets you fine-tune the quality or target a file size.

Two different ways WebP shrinks a PNG

WebP has a lossless mode that averages around 26% smaller than PNG while storing identical pixels — a straight win with no decision to make. It also has a lossy mode that, unlike JPG, keeps the alpha channel, and that is where the large savings live: screenshots and UI graphics frequently come out five to ten times smaller at a quality most people cannot pick out in a side-by-side. Both modes preserve transparency, so a logo converts without gaining a background. Which one you get here follows the quality setting: leave it high for near-lossless, lower it to trade fidelity for size.

Keep the PNG as your master file

Export WebP for the site and keep the PNG as the source of truth. Re-encoding a lossy WebP repeatedly compounds its artifacts the same way re-saving a JPG does, so you want one clean original to export from each time the asset changes. Keep PNG too for anything leaving the browser: email attachments, design handoffs, print, and upload forms that validate on the file extension.

Frequently asked questions

How much smaller is WebP than PNG?

For most graphics and screenshots WebP is significantly smaller than PNG at the same visual quality, which speeds up page loads and saves storage.

Does PNG to WebP keep transparency?

Yes. WebP supports an alpha channel, so any transparent areas in the PNG are preserved in the converted WebP.

Is WebP supported everywhere?

All modern browsers support WebP, so it is a great choice for websites. For older apps or editors that cannot open it, convert to PNG or JPG instead.

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