Convert PNG to WebP — free, in your browser
Drop your file below. The conversion runs entirely inside your browser — the file never leaves your device, there is no account, no watermark and no size-signup trap.
Supports image/*,.webp,.gif,.bmp,.avif,.svg,.tif,.tiff
This page converts PNG files to WEBP right in your browser — the file is never uploaded. PNG is lossless (transparency support); WEBP is lossy or lossless (transparency support). Everything below runs on the same encoder your browser ships with, so the result you download is exactly what this page measured.
Converting never adds quality: if the source is a lossy format, that loss is already baked into the pixels and no converter can recover it. What a conversion can do is stop further loss (choosing a lossless target) or shrink the file further (choosing a more efficient codec). The measured table below shows real sizes and timings for a representative sample so you can decide before spending time.
Measured on this page
| Sample | PNG | WebP | Median time | Size change |
|---|---|---|---|---|
| 800×600 mixed content (gradient, shapes, text) | 479 KB | 12 KB | 30 ms | −97% |
Encoded by this page's own browser engine, median of 5 runs at quality 80. Your files will vary — treat it as a representative data point, not a promise.
When PNG → WebP is the right call
- •Graphics, logos and screenshots with transparency that are too heavy as PNG — WebP keeps the alpha channel while shrinking the file.
- •Web performance work on current browsers: lossless WebP runs ~26% smaller than PNG on average.
FAQ
Does PNG to WebP keep transparency?
Yes — WebP's alpha channel survives the conversion intact, which is exactly why it is the go-to PNG replacement for the web.
Is the conversion lossless?
This page encodes at quality 80 (visually lossless for graphics with sharp edges). If you need bit-exact preservation, use a dedicated lossless-WebP pipeline and expect smaller savings.
Will text in screenshots stay sharp?
At quality 80, yes for typical UI screenshots. If you see fuzz on small text, raise the quality slider — or keep PNG for archival masters.