Convert PNG to WebP - Smaller File Size
Convert PNG to WebP free in your browser to cut file size 25 to 35% while keeping transparency. No upload, no signup, instant.
Shrink PNG images by converting them to modern WebP in your browser, with transparency kept intact and nothing uploaded.
Drag and drop your PNG file here
or
No size limit. The tool runs 100% locally on your computer.
How to Use Convert PNG to WebP - Smaller File Size
- Add your PNG. Drag the file onto the box above, or click Browse Files to pick it from your device.
- It is processed in your browser. The image is drawn onto an HTML5 Canvas and re-encoded as WebP. Any transparency in the PNG is kept.
- Compare the sizes. The tool exports WebP at 90% quality and shows the original and new file sizes so you can see how much smaller it is.
- Download. Click Download WebP to save the file, or Convert Another for the next one. Nothing is uploaded.
Frequently Asked Questions
Why convert PNG to WebP?
WebP usually produces files 25 to 35% smaller than PNG at similar quality, which speeds up page
loads and saves bandwidth. It is supported by every modern browser, so it is a strong choice for
the web.
Does WebP keep transparency?
Yes. WebP supports an alpha channel, so a transparent PNG background stays transparent in the WebP
output.
Is the conversion lossy?
This tool exports WebP at 90% quality, which is visually close to the original while saving space.
For flat graphics and logos the difference is usually invisible.
Is my image uploaded anywhere?
No. The conversion runs entirely in your browser. The file never leaves your computer, so it works
offline and keeps private images private.
How much smaller will the WebP be?
For most images, 25 to 35% smaller than the PNG. Detailed images save the most. The tool shows the
exact before and after sizes for your file.
Where can I use WebP files?
WebP works on all current browsers and most modern editors and CMS platforms. For older software
that cannot open it, keep a PNG copy as a fallback.
Does it keep the same dimensions?
Yes. The pixel width and height stay identical. Only the format and compression change.
Will WebP open on iPhone and Safari?
Yes. Safari has supported WebP since 2020 (iOS 14 and macOS Big Sur). Only very old devices may
need the original PNG.
Does it work on a phone or tablet?
Yes. It runs in any modern browser on Android, iPhone, iPad, Windows, Mac, and Linux, with nothing
to install.
Can I convert several PNGs at once?
The tool converts one image at a time so you can preview each result. Use Convert Another to run
through several files in a row.