Convert PNG to WebP online, free
This is the one conversion here that does not ask you to give something up. A PNG with transparency has exactly one widely-supported destination that keeps it: WebP. Unlike JPG, WebP carries a real alpha channel, so logos, icons, stickers, UI screenshots, and any graphic with cut-out edges keep their transparency exactly as it was — while the file still comes back smaller than the PNG you uploaded.
Why a WebP beats a PNG on size
PNG's compression dates from the mid-1990s and stores images in a way that was clever then and is simply outclassed now. WebP's encoder describes the same pixels using fewer bytes, which is why a straightforward conversion usually produces a noticeably smaller file before you have made any other decision about it. For a site carrying dozens of PNG assets, that difference adds up quickly.
What this is best for
Flat graphics gain the most: logos, icons, illustrations, screenshots, and anything with large areas of solid colour and hard edges. Photographs stored as PNG — which were never a good fit for PNG in the first place — also shrink substantially. Either way, transparency in the source survives the conversion untouched.
Choosing a level
Fast, Recommended, and Smallest control how much effort goes into the encode. Recommended is the default and covers almost everything. Fast returns a large batch more quickly. Smallest works harder at reducing the file and is worth the extra time for assets that will be loaded on every page of a site.
Colour handling
Your colour profile is kept by default so nothing shifts. For assets going onto a website, Convert to sRGB is usually the better option — it makes the colours render identically in every browser rather than depending on how each one handles an unfamiliar profile.
Converting in bulk
Upload up to 100 PNGs at once from your device, Google Drive, or a direct URL. Original filenames are preserved, which matters when the files are referenced by name across a site or an app. Everything is deleted from the servers within an hour.
What you get
- Transparency preserved exactly — no background colour substituted
- A smaller file than the source PNG, usually noticeably so
- Three levels covering speed, balance, and smallest output
- Colour profile kept, or converted to sRGB for the web
- Up to 100 files per batch with original filenames preserved
- No account, no watermark, and files deleted within an hour
What's next?
Converting photographs as well? Convert JPG to WebP handles the JPG side of the same job. If a WebP file gets refused somewhere, Convert WebP to JPG converts it back. And if you need to keep the PNG format for compatibility, Compress PNG reduces the size without converting at all.