PNG to WebP
Convert PNG images to lightweight WebP that keeps transparency — privately, on your device.
100% private · runs entirely in your browserDrop your PNGs here
or browse your files
Drop as many PNGs as you like — pick your quality below.
Add your PNGs
Pick the images to convert. They never leave your device.
They become WebP
FileFlow converts each PNG to next-gen WebP, right inside your browser.
Download your WebP files
Save every converted image instantly. Nothing was uploaded.
PNG to WebP converts PNG images into next-generation WebP files that are dramatically smaller while keeping transparency intact, all in your browser. It is the ideal way to shrink logos, icons and graphics for faster websites without losing their transparent backgrounds — batch convert with no upload or sign-up.
Frequently asked questions
Does WebP keep the transparency from my PNG?
Yes. WebP supports transparency just like PNG, so transparent backgrounds are preserved in the converted file.
Why convert PNG to WebP?
WebP files are far smaller than PNGs while keeping transparency, which makes pages load faster and helps your site’s performance scores. It is the modern replacement for heavy PNG graphics.
Can I convert many PNGs at once?
Yes. Drop a whole batch and FileFlow converts every PNG to WebP in a single pass.
Are my files uploaded to a server?
No. FileFlow runs entirely in your browser using JavaScript — your files are read, processed, and saved on your own device and never travel across the internet. There is literally no server to upload to.
Is it really free? Do I need to sign up?
Yes, it is completely free with no account, no email, and no watermark. Lightweight ads keep the tools free for everyone — there is nothing to install and no limits to unlock.