How to convert PNG to WebP
- Click the box above or drag your PNG files onto it. You can add several at once.
- Optionally adjust the quality slider — 80–90% is a good balance of size and sharpness.
- Each image is converted to WebP immediately. The new file size is shown next to the original.
- Click Download on a single file or Download all to save everything.
Why convert PNG to WebP?
- You are building a website and want faster page loads. Switching PNG images to WebP commonly cuts their size by a quarter or more while keeping transparency.
- Google's PageSpeed Insights flagged "Serve images in next-gen formats".
- You want to save storage or bandwidth on a large set of graphics.
What is PNG?
PNG is a lossless format: every pixel is stored exactly, so text, logos and screenshots stay perfectly sharp. It supports full transparency (an alpha channel). The trade-off is size — a PNG photo is often several times larger than the same photo saved as JPG. It is best for screenshots, logos, icons, graphics with text, and images that need transparency.
What is WebP?
WebP is a modern format created by Google for the web. It supports both lossy and lossless compression as well as transparency, and a WebP image is typically 25–35% smaller than an equivalent JPG. Every current browser can display it, but some older desktop apps and upload forms still reject it. It is best for website images where page speed matters.
PNG vs WebP at a glance
| PNG | WebP | |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
| Typical photo size | Large | Smallest |
| Compatibility | Universal | Modern browsers & apps |
Private by design
Many online converters upload your photos to a remote server, process them there, and keep a copy for some period of time. This tool works differently: the conversion code runs inside your browser tab, using the same image engine your browser already uses to display pictures. Your PNG files are read from your disk, re-encoded as WebP in memory, and handed straight back to you. Nothing is sent over the network, which makes the tool safe for personal photos, ID scans and work documents — and it keeps working even if your connection drops after the page has loaded.
Tips for the best results
- For photos, 80–90% quality is usually indistinguishable from 100% at a fraction of the size.
- Very large images (above about 50 megapixels) may fail on phones with limited memory. Try a computer, or shrink them first with the Image Resizer.
- Need a smaller file instead of a different format? Use the Image Compressor.
Frequently asked questions
Is this PNG to WebP converter free?
Yes. It is completely free with no sign-up, no watermark and no daily limit.
Are my images uploaded to a server?
No. Conversion happens inside your web browser using the built-in Canvas API. Your images never leave your device, which also makes it fast.
Can I convert many PNG files at once?
Yes. Select or drop as many files as you like, then use "Download all" to save every converted WebP.
Will converting PNG to WebP reduce quality?
WebP is a lossy format, so a small amount of detail is discarded. At the default 90% quality the difference is very hard to see. Raise the slider to 100% for maximum quality or lower it for smaller files.
Does it work on iPhone and Android?
Yes. It works in any modern browser — Safari, Chrome, Firefox and Edge — on phones, tablets and computers.