Convert PNG to WebP
This is an optimisation, not a rescue: PNG opens everywhere and there is nothing wrong with it. The reason to convert is weight. If the image is going onto a website, a PNG is very often several times heavier than it needs to be, and page weight is the one thing that reliably costs you visitors and search position.
Drop your PNG files below and download WebP in seconds. Free, unlimited and completely private: the conversion runs inside your browser, so your files never leave your device and are never uploaded to a server.
No upload. Works with your network switched off. Check it yourself, or read what actually happens to your file.
Why convert PNG to WebP?
WebP was designed by Google as a direct replacement for exactly this file. It keeps the alpha channel, so logos and UI assets still sit cleanly on any background, and Google publishes that lossless WebP runs about 26 percent smaller than PNG at equivalent quality. Keep the PNG as your working original: this is the export step, not the archive.
PNG stores every pixel exactly as it was saved, which makes it the safe choice whenever detail matters more than file size. It supports a full alpha channel, so logos and UI elements keep clean, soft edges on any background. The tradeoff is that photos saved as PNG can get large.
Google designed WebP to replace both JPG and PNG on the web, and it typically compresses 25 to 35 percent smaller at similar quality. It handles both lossy and lossless modes and supports transparency. Support is excellent in browsers but still patchy in older desktop software.
What this converter does to your PNG file
The PNG is decoded by your browser and re-encoded as WebP through the browser's own encoder, in lossy mode at the quality you choose, defaulting to 0.9. That is worth being clear about, because it is the part converter pages usually skip: this is not a lossless repackaging. The alpha channel is preserved, so transparent areas stay transparent rather than being flattened. For flat graphics and sharp text a high quality setting matters more than it does for photographs, since lossy compression is least forgiving exactly where PNG is strongest.
PNG vs WebP at a glance
| PNG | WebP | |
|---|---|---|
| Full name | Portable Network Graphics | WebP image |
| Compression | Lossless | Lossy or lossless |
| Transparency | Yes | Yes |
| Best for | Logos, screenshots and graphics with transparency | Modern websites and apps |
What changes when you convert PNG to WebP
| What happens | |
|---|---|
| Image quality | Reduced, by however much you choose. WebP is lossy; the quality control above sets the trade. Keep the PNG original if you may need to edit it again. |
| Transparency | Kept. WebP stores an alpha channel, so cut-out backgrounds and soft edges survive. |
| EXIF and GPS | Removed. The conversion goes through a pixel buffer, so camera data and location are not carried into the WebP file. |
| Colour profile | Not carried across. The image is handled in sRGB, which is right for the web and wrong for colour-managed print work. |
| Animation | Not applicable. PNG files here are single images. |
| File size | Smaller in almost every case, which is the reason for the conversion. How much smaller depends on the picture, so no figure is quoted here. |
How to convert PNG to WebP
- Drop one or more PNG files into the box above, or click to browse.
- ImageConvert converts each file to WebP right on your device.
- Download a single file, or grab everything at once as a zip.
Frequently asked questions
Is converting PNG to WebP lossless?
Not here. The browser's WebP encoder is used in lossy mode at the quality you set, so a small amount of detail is given up in exchange for the size reduction. Keep the PNG as your original if you will edit the image again.
Does WebP keep my transparency?
Yes. WebP supports a full alpha channel, so cut-out backgrounds and soft edges survive the conversion intact.
How much smaller will the WebP be?
It depends entirely on the image, so no figure is quoted here. Google publishes about 26 percent for its own lossless comparison against PNG; a flat graphic can do far better and a noisy photograph far worse.
Will everyone be able to open the WebP?
In a browser, yes: every current browser supports it. Outside the browser, some older editors, office suites and upload forms still refuse WebP, which is why the reverse conversion is one of the most common on this site.
The 26 percent figure quoted above is Google's own comparison of lossless WebP against PNG at equivalent quality, published at developers.google.com/speed/webp.
What is a PNG file?
PNG is a lossless format with transparency support, ideal for graphics, logos and screenshots.
What is a WebP file?
WebP is a modern format from Google that compresses smaller than JPG and PNG while keeping quality.
Is it free to convert PNG to WebP?
Yes. There are no limits, no watermarks and no account needed. Convert as many PNG files as you like.
Are my files private?
Completely. Your PNG files never leave your browser and are never uploaded to a server, so your images stay on your device.