Why convert PNG to WebP on-device instead of uploading it?

PNG-to-WebP conversion is meant to shrink a file while keeping its transparency intact, which NearIMG does directly in your browser's own encoder. Because nothing is uploaded, the same conversion works whether the PNG is a simple icon or a screenshot you'd rather not send anywhere.

How it works

1. Drop in PNG files — icons and screenshots with transparency included.
2. Set the WebP quality; the measured output size updates per file.
3. Click Convert — transparency is preserved and the smaller WebP files download.

This is the conversion that lets graphics keep their alpha channel and still get dramatically smaller — flat-colour UI screenshots and icons shrink the most. The output is lossy WebP at the slider's setting, so inspect fine text at the default 80% and nudge upward if it looks soft; the live size readout makes the size-versus-sharpness trade explicit. For the rare case where the pixels must stay mathematically identical, keep the PNG.

Does WebP keep PNG transparency?

Yes — WebP supports transparency, so the alpha channel is preserved.

Is the WebP lossy or lossless?

It is saved as lossy WebP for smaller files; raise the quality if you want it closer to the original.

How much smaller will my PNG get?

It depends on content — flat-colour graphics and screenshots often shrink by a large factor, busy photographic PNGs less so. The tool shows a measured ≈ size for each file before you download, so you never have to guess.