PNG → WebP

Converting locally: nothing is uploaded

Transparency kept, weight cut: free, and finished on your machine.

WASHER Nº 1 — HEAVY DUTY IDLE

Drop your PNGs in the drum

or , and nothing leaves this tab

READS JPG · PNG · WEBP · GIF · BMP · SVG · AVIF

CYCLE →

WASH TEMP

The PNG → WebP cycle

WebP does everything PNG does, including crisp edges and real alpha, at a fraction of the size. This is the cycle for shipping the same UI assets lighter.

Transparency survives the cycle: both stocks carry a full alpha channel. Expect the folded copy noticeably lighter than the load. Either way, re-encoding through the canvas collects EXIF like lint: camera model, GPS coordinates and timestamps are stripped from the folded copy.

This is the cleanest route for web assets such as UI graphics, logos and icons that need transparency. PNG has no lossy mode, so a PNG of a photograph is wasteful and WebP typically trims it dramatically.

Open the result on a coloured background to check the edges. A soft shadow or anti-aliased curve should look the same as the PNG. If a fringe appears, raise the quality setting.

Need the other direction? WebP → PNG · Other routes into JPG → WebP, GIF → WebP, BMP → WebP.

Questions at the counter

Does PNG to WebP keep transparency?

Yes, fully, semi-transparent edges included. WebP carries a proper alpha channel, so drop shadows and anti-aliased corners arrive intact.

Is the conversion lossless?

It encodes at your chosen quality, so visually lossless at Warm and Hot settings while cutting file size dramatically. True mathematically-lossless WebP exists; for shipping web assets the quality dial is the practical trade.

Will older software still open it?

Anything updated this decade, yes. If your recipient list includes legacy design tools or old Windows picture viewers, keep a PNG copy of anything irreplaceable.

Is the conversion really private?

Yes, architecturally. This page is static files; there is no server to receive an upload. Your PNG is decoded and re-encoded inside this tab by your own machine, and you can watch the absence of network traffic in your browser’s developer tools.

Before you convert

A converter can change the container. It cannot tell you whether that was the right call for this particular image. These cover the decision itself. They were written from building the encoders that run on this page, and are checkable against your own files.