Convert PNG to WEBP
Convert PNG to WEBP free in your browser. No upload, no signup, no watermark. Files stay on your device.
drop a .png file
or click to browse
related
more png & webp
see all image converters →guide
how to convert png to webp
Drop your PNG file
Drag your PNG file into the drop zone above, or click the box to pick a file from your computer or phone. The browser reads the file directly — nothing uploads.
Click Convert
The page runs Canvas API on your device to decode the Portable Network Graphics and encode it as WebP. Most conversions finish in a few seconds; large or codec-heavy files (RAW, video) can take longer.
Download the WEBP file
When the conversion finishes, the WEBP file is ready to download. Save it anywhere on your device.
FAQ
common questions
Will my PNG file lose quality when converted to WEBP?
Yes. WebP is a lossy format, so the converter re-encodes your PNG data through a compression step that throws information away to make the file smaller. The result is visibly indistinguishable from the original at typical quality settings, but it's a one-way trip — re-converting the WEBP back to PNG won't restore the data the lossy step removed.
What happens to transparency when converting PNG to WEBP?
Yes. Both Portable Network Graphics and WebP support transparency, so any alpha channel in your source PNG is preserved in the WEBP output.
Will an animated PNG convert to an animated WEBP?
WebP supports animation, but a still PNG only has one frame to start with. The output is a single-frame WEBP — still rather than animated.
Will the WEBP file be smaller or larger than my PNG?
Usually much smaller — WebP compresses harder than Portable Network Graphics, so expect roughly a half to a third of the original file size. Exact ratio depends on the quality settings the source was encoded at.
When does it make sense to convert PNG to WEBP?
Common reasons: PNG is files are much bigger than JPEG for photographs, while WEBP is typically 25–35% smaller than JPEG at similar quality. Converting also matters when the app, device, or platform you're sharing with prefers WebP — all modern browsers and most current image apps; older desktop apps may need a plugin.
Where will my WEBP file open after conversion?
All modern browsers and most current image apps; older desktop apps may need a plugin. WebP is widely enough supported that you can hand the output file to most modern apps and expect them to render it.
Does this site upload my PNG files anywhere?
No. The whole conversion runs in your browser using Canvas API. The file you drop in never leaves your device — we don't see it, and we couldn't even if we wanted to.
Is there a file size limit for PNG to WEBP?
There's no hard cap — limit is your device's memory. Several hundred megabytes works fine on a typical laptop. Phones and low-RAM machines may struggle with very large files.
Does PNG to WEBP work offline?
Once this page has loaded, yes. The converter library lives in your browser and runs without any further network calls. Reloading the page does still need connectivity.