Make PNG images lighter for your website without losing the transparent background. Choose a quality, or set 100% for lossless output.
Drop your image here
100% private. Nothing is uploaded.
Same transparency, usually smaller files
Drag PNG images onto the upload box, or click to pick them. WebP is selected as the output for you.
The default of 90% makes a lossy WebP. Move the slider to 100% for a lossless file. Transparency is kept at every quality.
Convert the batch, then save files one at a time or as a single ZIP. Each WebP keeps the PNG's name and pixel size.
WebP is an image format made by Google for the web. It holds the same kinds of images as PNG, transparency included, usually in smaller files. Converting PNG to WebP saves your image in that format. Compressing a PNG is a different task: the file stays a PNG and only gets smaller.
The converter makes a lossy WebP by default, and a lossless one when you ask for it. Pick the right mode for each image with the answers below.
Not at the default. At 90% quality the WebP uses lossy compression, which drops fine detail you rarely notice. Set the Quality slider to 100% and the converter writes a lossless WebP, and every visible pixel of an 8-bit PNG stays the same.
Use 100% for sharp graphics and 85–90% for photos:
It can happen with tiny icons and simple flat graphics that PNG already stores well. Try a lower quality and compare. If the PNG still wins, keep it and shrink it with the PNG compressor.
Most PNGs convert without surprises. Three kinds need a note:
Convert images between these related converters
Transparency, file size and how to convert.
Add your PNGs to the upload box on this page. WebP is already chosen, so press Convert All. Then download each WebP, or use Download All for one ZIP.
Yes. WebP has an alpha channel like PNG, so fully and partly see-through areas carry over. The converter does not fill them with a color, whether you pick lossy or lossless output.
For websites, usually. WebP keeps transparency, gives smaller files in most cases and works in all current major browsers. PNG is the safer pick for print, for editing apps that can't open WebP, and for 16-bit color.
Select every PNG at once, or drag a whole group onto the upload box. One press of Convert All handles them all, and Download All packs the results into a ZIP. The only practical limit is your device's memory.
Use this page in your browser. It works the same on Mac and Windows, with nothing to download or set up.
No. The converter has no daily cap, no file count limit and no account. Very large images can fail if your device runs short of memory. Each file also has a two-minute time limit.
Yes. WordPress has accepted WebP uploads since version 5.8. Convert your PNGs here, then upload the WebP files to your media library as usual.
Yes. The Quality slider sets how much the WebP is compressed. Under Resize, turn on "Enable resize" and type a width or height in pixels to shrink the images in the same step.