PNG to WebP Converter

PNG to WebP converter: lossy, lossless and animated, free and private

To convert PNG to WebP free and private, drop your PNG files on the upload area (or click Select Files), choose Lossy or Lossless under Compression Mode, set the Quality slider if you chose Lossy (it starts at 85), and click Download or Download All (ZIP). The conversion runs in your browser. Nothing is uploaded, and you can check that in the Network tab of DevTools.

WebP is an image format from Google that supports lossy compression, lossless compression, transparency and animation. Both modes keep the alpha channel, which JPG cannot do. Every card lists the PNG size, the WebP size and the saving, and a warning appears when the WebP is no smaller than the PNG, so you decide with real numbers rather than averages.

To turn a WebP back into a PNG, use the WebP to PNG converter. If the destination only accepts the older format, the PNG to JPG converter fills transparent areas with a colour you choose.

Table of Use: PNG to WebP settings for common jobs

Reducing the pixel dimensions often saves more than lowering the quality. Set the size first with the image resizer or make small listing pictures with the thumbnail generator.

Features

• Lossy and Lossless modes. Quality runs from 0 to 100, starts at 85 and applies to Lossy only. In Chrome and Edge, Lossy at Quality 100 produces a lossless WebP, so use 99 or lower for a lossy file.
• Exact lossless path. A PNG with transparency or a colour profile is read with a real PNG decoder and written with libwebp's exact mode, because a canvas rounds the colour of semi-transparent pixels. A PNG whose gamma chunk makes browsers shift its colours is stored as your browser shows it, and a grey colour profile is applied so the WebP holds sRGB.
• Animated WebP. Reorder frames with the arrow buttons, set Time per frame (1 to 60,000 ms) and Times to play (0 to 65,535, where 0 means forever). Changing a file or a setting discards the animation, so you rebuild it with current settings.
• Browser encoder first, WebAssembly second. Chrome, Edge and Firefox can write WebP from a canvas. When a browser cannot write WebP or lossless WebP, or when Lossless mode needs exact pixels, libwebp compiled to WebAssembly is loaded from ZipConvert and runs on your device.
• Batch queue. Files are converted one at a time, a mode or quality change converts them all again, and Download All (ZIP) stays disabled until the queue is idle.
• Honest limits. Files are checked by their first bytes, so a renamed JPG is skipped with a message. Damaged or oversized images are reported, and 16-bit PNGs are reduced to 8 bits per channel.

If you only need a lighter PNG or JPG without changing format, the image compressor handles JPG, PNG and WebP. For a GIF instead of an animated WebP, use the PNG to GIF converter.

How to convert PNG to WebP, step by step

1. Drag your files onto "Drop PNG files here or click to choose", or click Select Files.
2. Under Compression Settings pick Lossy or Lossless. In Lossy mode, move Quality; 85 is a sound start for photos.
3. Compare Resolution, PNG size and WebP size on each card, and look at both previews.
4. Click Download on a card, or Download All (ZIP) for the batch. Clear All empties the list.
5. For an animation, add two or more PNGs, order them with the arrows, set the timing under Animated WebP and click Create Animated WebP.

Trim a picture first with the image cropper. For print or archive masters, where WebP is the wrong choice, the PNG to TIFF converter keeps every pixel in a format print workflows accept.

Who can use it

• Web developers and site owners chasing faster pages and better Core Web Vitals scores by swapping heavy PNGs for WebP.
• Online sellers and bloggers preparing product images and hero pictures, perhaps with a watermark added before conversion.
• Designers exporting UI assets with transparency, or short looping animations that are lighter than GIF.
• Anyone sharing sensitive images who wants conversion without handing the files to a server.

FAQs