Turn PNG Files Into WebP in Seconds
Lightning-quick PNG-to-WebP conversion that runs entirely on your device. Private by default, free forever, with no watermarks.
Drag & drop your files
or browse from your device · batch supported
Images · Documents · Archives — processed locally, never uploaded
Why our PNG to WebP converter is different
Lightning fast
Most PNG files become WebP in under a second. No upload queue, no waiting room.
Private by default
Your PNG never touches our servers. The whole conversion runs locally in your browser.
Pixel-perfect quality
Resolution and content are preserved end-to-end. The WebP output is exactly what your file deserves.
Works everywhere
Any modern browser on desktop, tablet, or phone. Nothing to install, nothing to update.
How it works
Three steps. No accounts, no uploads, no nonsense.
Drop your PNG
Drag a PNG into the dropzone, or paste it from your clipboard.
Convert to WebP
Your browser re-encodes the file locally. Nothing is sent over the network.
Download your WebP
Grab the finished WebP as soon as it's ready. Convert another in one click.
About converting PNG to WebP
PNG-to-WebP conversion sounds simple until you try to do it ten times in a row on a flaky web tool. We built this page specifically for that workflow. Drop a PNG (a lossless raster format with full transparency support), and the browser immediately re-encodes it as WebP (a modern Google format with superior compression and alpha). You can drop a single file or a whole batch — the tool processes them in parallel and gives you each output as soon as it's ready. Because everything happens client-side, your files don't leave your machine, which makes this safe to use with sensitive documents, work-in-progress designs, or anything you'd rather not hand to a third party. The conversion logic uses well-tested browser APIs, so the resulting WebP is consistent across operating systems and matches what you'd get from a desktop tool — without the install.
Frequently asked
Can I convert multiple PNG files to WebP at once?+
Yes. Drop a whole folder of PNG files into the dropzone and they'll be converted to WebP in parallel. Each output downloads as soon as it's ready.
Is there a file size limit for PNG to WebP conversions?+
There's no server-side limit because we don't run a server. The practical ceiling is whatever your device's RAM can comfortably load — usually hundreds of megabytes for images and documents.
Will the WebP output keep the same quality as my PNG?+
We preserve the original resolution and content. Because PNG is a lossless raster format with full transparency support and WebP is a modern Google format with superior compression and alpha, some characteristics may change by definition — but no quality is lost beyond what the destination format itself requires.
Are my PNG files uploaded to a server?+
No. The conversion happens entirely in your browser using local Web APIs. Your PNG file never leaves your device, which is why this tool is safe for sensitive content.
Is this PNG to WebP converter really free?+
Yes. There's no paywall, no signup wall, and no per-file fee. You get unlimited PNG-to-WebP conversions when signed in, and a generous free quota without an account.