Convert PNG to WebP Online for Free
WebP is the format Google built specifically to beat PNG and JPG at their own game — modern browsers render it natively, and it typically comes in 25-35% smaller than an equivalent PNG while keeping full transparency support. If you're optimizing a website's Core Web Vitals or just trying to keep a media library from ballooning, converting your PNGs to WebP is one of the highest-leverage, lowest-effort wins available.
JPG, PNG, WebP, HEIC, SVG · processed entirely on your device
Convert PNG to WebP Online for Free
WebP is the format Google built specifically to beat PNG and JPG at their own game — modern browsers render it natively, and it typically comes in 25-35% smaller than an equivalent PNG while keeping full transparency support. If you're optimizing a website's Core Web Vitals or just trying to keep a media library from ballooning, converting your PNGs to WebP is one of the highest-leverage, lowest-effort wins available.
This converter runs the whole process locally in your browser's Canvas engine — nothing is uploaded, so there's no wait and no privacy concern. Transparent areas in your PNG stay transparent in the WebP output; unlike a PNG-to-JPG conversion, no background flattening happens here. Use the quality slider to trade some compression for sharpness, or vice versa — 80-90% is a good starting point for most graphics and screenshots.
Drop in one PNG or a whole folder's worth; each is converted independently and, when you upload more than one, zipped together into a single download. Because everything happens on-device, there's no daily limit, no account, and no watermark — just a smaller file that still looks exactly like the original.
Common questions
WebP uses more modern compression algorithms than PNG, achieving similar or better visual quality at roughly 25-35% smaller file sizes on average — especially noticeable for graphics, illustrations, and screenshots.
Yes — WebP fully supports an alpha channel, so any transparent or semi-transparent pixels in your PNG are preserved exactly in the converted file, unlike converting to JPG.
All modern browsers (Chrome, Firefox, Safari, Edge) support WebP natively. If you need to support very old browsers or software that doesn't recognize WebP, keep a PNG or JPG fallback on hand.
For most graphics and photos, 80-90% quality is visually identical to the source PNG while still shrinking the file substantially. Drop it lower if file size matters more than perfect sharpness.
Entirely on your device, using your browser's built-in image encoding. Your files are never uploaded, so the tool works instantly and privately, even offline once the page has loaded.