Convert PNG images to WEBP in your browser. WEBP produces significantly smaller files than PNG while keeping transparency, making it the best format for fast-loading websites and apps. Drop in your PNGs, pick a quality, and download.
You can convert many files at once and see exactly how much smaller each becomes. Everything runs on your device, so nothing is uploaded.
How to convert PNG to WEBP
- Drop your PNG files onto the box or click to upload.
- Keep the target set to WEBP and adjust the quality slider.
- Compare the before-and-after size for each image.
- Download each WEBP, or use “Download all”.
Why convert PNG to WEBP
WEBP was designed for the web and typically produces files 25–35% smaller than PNG at comparable quality, sometimes much more for photographic content. Crucially for PNG users, WEBP also supports transparency (an alpha channel), so you get the size savings without losing a transparent background. Switching site images from PNG to WEBP is one of the most effective ways to improve page-load speed and Core Web Vitals.
Quality and browser support
WEBP supports both lossless and lossy compression; the quality slider trades file size against fidelity, and around 80–90% is usually indistinguishable from the original. WEBP is supported by all modern browsers (Chrome, Edge, Firefox, Safari), so it is safe to use on the web today. If you need to open the image in older software that does not read WEBP, convert it to PNG instead.
Frequently Asked Questions
How do I convert PNG to WEBP?
Upload the PNG, keep the format set to WEBP, adjust the quality if you like, and download. You can batch several files.
Does WEBP keep transparency?
Yes. Unlike JPG, WEBP supports an alpha channel, so a transparent PNG stays transparent after conversion.
How much smaller will the file be?
Often 25–35% smaller than PNG at similar quality, and more for complex images. The tool shows the exact size change for each file.
Do all browsers support WEBP?
Yes, every modern browser supports WEBP. For older, non-web software that cannot open it, convert to PNG instead.