Convert PNG to WebP Online — Free
Runs 100% in your browser — your files never leave your device.
PNG is lossless but heavy. WebP supports transparency too, usually at a fraction of the size — for logos, icons, and screenshots on a website, the swap is free performance. This converter decodes your PNG and encodes WebP locally in your browser tab, with no server in the loop.
How it works
- 1
Drop your PNG file
Drag a PNG image into the box, or click to browse. The file stays on your device.
- 2
Convert to WebP
Click Convert. Transparency is preserved where WebP supports it, and the encoding happens locally.
- 3
Download the result
Save the WebP file, or drop another PNG to convert it too — free and unlimited.
About this tool
Converting PNG to WebP
A PNG file png stores every pixel losslessly and supports full transparency, which makes it the standard for screenshots, logos, and graphics — at the cost of larger files for photographs.. WebP webp is the modern web format: smaller than jpg at equal quality, and it supports both lossy and lossless modes plus transparency. Converting moves your image from the first set of trade-offs to the second: file size shifts with the format's compression style, transparency survives where supported, and pixel data is re-mapped to the target format exactly.
What to check after converting
Open the result and check the two things conversion can change: transparency and size. Transparency is carried over exactly where the target format supports it. Your original file stays untouched on your device either way, and the download is a brand-new file.
Frequently asked questions
Is this conversion lossless?
Yes — both PNG and WebP store pixels losslessly, so the conversion moves your image between formats without touching a single value. The file size changes; the pixels do not.
Is my image uploaded anywhere?
No — the conversion runs entirely in your browser. The image is processed on your device and never sent to any server, which you can verify by disconnecting after the page loads.
Why convert PNG to WebP instead of the other way around?
The direction follows what the destination needs: web performance versus graphics, screenshots, and anything needing transparency. Converting back is always available — but each lossy hop re-encodes the image, so keep the highest-quality format as your working copy and convert toward the destination.