Why convert PNG to WebP?
Images are usually the heaviest part of a web page. PNG files in particular can be large because they store every pixel losslessly. Converting them to WebP keeps them looking the same to visitors while cutting the file size dramatically — often by half or more for photos and screenshots. Smaller images mean faster page loads, better Core Web Vitals scores and less mobile data for your visitors. This converter turns PNG and JPG files into WebP directly in your browser, one at a time or in large batches.
Features
- PNG and JPG input — convert both formats in the same batch.
- Adjustable quality from 30 to 100 to balance size and sharpness.
- Transparency preserved: PNG alpha channels carry over to WebP.
- Batch conversion with a progress list showing the result for each file.
- ZIP download of all converted images in one click.
- Private: images are processed on your device and never uploaded.
How much smaller will my images be?
It depends on the content. Typical results at quality 80:
| Original | Typical WebP saving |
|---|---|
| PNG photo | 70–90% smaller |
| PNG screenshot or UI | 40–80% smaller |
| PNG logo or icon with transparency | 20–60% smaller |
| JPG photo | 25–35% smaller |
Simple graphics that are already tiny may shrink only a little, and in rare cases a heavily optimized PNG can come out slightly larger. Check the size shown next to each file.
Using WebP on your website
All modern browsers support WebP, so you can usually just replace the image file and update its URL. If you also need to serve very old browsers, use the HTML <picture> element with a WebP source and a JPG or PNG fallback. Most content management systems, including WordPress, accept WebP uploads directly.
Tips for the best results
- Resize first. An image that is twice as wide as it is displayed wastes bytes. Use Resize Image before converting.
- Keep originals. WebP at lossy quality is not ideal for repeated editing; keep your PNG master files.
- Need a specific file size? Use Compress Image to target a size in KB.
- Going the other way? Convert WebP files back with WebP to PNG, or switch between any formats with the Image Converter.