Convert PNG to WebP in your browser and keep the transparency while the file shrinks. Quality slider, batch conversion, one ZIP download.
Your files are processed in your browser, on your own device. Nothing is uploaded to a server.
PNG files are exact and heavy. WebP holds the same picture, transparency included, in a far lighter file, which is why this conversion is a standard step in getting a website into shape. Drop PNGs in here and get WebP files out, converted in your browser, with the clear parts staying clear.
The quality slider starts at 92. WebP keeps a full alpha channel, so logos, overlays and product cutouts stay transparent after conversion. Nothing gets flattened onto a background color here, because WebP, unlike JPG, has somewhere proper to put the transparency.
Flat graphics and photos want different treatment. A logo lives on its edges, and edges are the first place compression artifacts show, as faint smudges along lines that should be crisp. Keep logos, icons and text graphics at 90 or above. Photos and soft illustrations forgive far more: settings in the 75 to 85 range strip out weight most viewers never miss. Published figures for the format put WebP at roughly a quarter to two fifths smaller than PNG before quality is traded away at all, and photographic content at web settings often gives back far more than that against the PNG it came from. The result row shows each new size, so the trade is always visible.
Honesty section, as promised by the heading. A very small flat file, a tiny icon of a few kilobytes, can come back the same size or a shade larger as WebP. Format overhead eats the saving when there is barely any picture to compress. It is rare, and the size display will show it plainly when it happens. The other limit sits at the far end of the chain: some older editors and a few stubborn content systems still cannot open WebP at all. Keep the PNG originals and that problem never becomes yours. If the file needs to go the other way for such a tool, WebP to PNG restores the exact format.
The redraw happens in this tab, on your device. Metadata a PNG was carrying, location data included, does not pass into the WebP, and any saved rotation is applied so pictures stand upright. Nothing is uploaded, no account is asked for, no daily cap is counted, and no watermark appears, here or anywhere in the image converters. Photos arriving as JPG get the same treatment from JPG to WebP.
Yes, in full. WebP carries an alpha channel just as PNG does, including semi-transparent pixels along soft edges. Your cutouts, overlays and logos stay transparent, with no background color painted behind them.
Stay at 90 or above. Flat color and sharp edges show compression artifacts before anything else does, and a logo is nothing but flat color and sharp edges. Photos can safely go lower, into the 75 to 85 range.
It happens with very small flat files. Every format carries a little overhead, and on a file of a few kilobytes that overhead can outweigh the compression saving. Keep the PNG for that one file. It is already as light as it gets.
A good deal smaller than the PNG. Photographic content at normal web quality settings commonly sheds most of its PNG weight, because PNG stores photos at full price while WebP was designed to trim exactly that kind of picture.
Yes. Drop the whole set, convert once, and download the WebP files packed in a single ZIP. A single file downloads by itself.
No. The conversion runs in your browser on your own machine. Nothing is sent, stored or seen by anyone else, and there is no sign-up.
Same rules as this one: free, in your browser, with nothing uploaded.
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