PNG to WebP converter
WebP keeps the transparency PNG gives you at a fraction of the file size — the best default for screenshots on the web.
Output: WebP
Drop images here
or , or press ⌘V to paste
Convert several at once — each is decoded, re-encoded and offered for download without ever leaving your browser.
Processed on your device. Nothing is uploaded.
How to use it
- Drop your PNG files onto the panel, or click to pick them.
- Set the quality — 90% is visually lossless for most screenshots.
- Download each WebP file, or grab them all at once.
Questions
Are my images uploaded anywhere?
No. Everything runs in your browser using the Canvas API — the file never leaves your machine, and the tool keeps working if you go offline after the page loads. There is no account, no queue, and no server-side copy to delete later.
Will converting to WebP lose quality?
WebP is a lossy format, so some data is discarded. At 90% quality the difference is invisible for screenshots and UI images. Drop to 70–80% only if file size matters more than crisp text — compression artefacts show up around lettering first.
Does WebP keep transparency?
Yes. Unlike JPG, WebP has a full alpha channel, so transparent PNGs convert cleanly and come out much smaller.
Related tools
- Image compressorShrink JPG, PNG and WebP files with a live quality preview and a before/after size readout. Nothing is uploaded.
- Image resizerResize images to exact pixel dimensions or by percentage, with the aspect ratio locked. Free, private, in your browser.
- Image format converterConvert between PNG, JPG and WebP in your browser. Batch conversion with quality control, no uploads, no sign-up.
This is one keystroke inside LayerShot
The desktop app captures the screen, applies your styling and puts the result on your clipboard without a browser tab, an upload, or a download folder full of files called Screenshot (3).png. One payment, one Mac and one Windows PC, lifetime updates.