How to Convert PNG to WebP Online
PNG files — especially graphics and screenshots — are often large. Converting them to WebP keeps the transparency but makes the file dramatically smaller, which is perfect for websites and apps. This free PNG to WebP converter runs entirely in your browser, so your images are never uploaded. Convert one file or a whole batch, then download them all as a ZIP.
Add your PNG images
Drop one or many .png files. They are converted locally on your device, never uploaded.
Convert to WebP
Choose a quality (or Lossless) and convert — each PNG becomes a smaller WebP with transparency intact.
Download the WebP files
See the size saved for each file, then save one image or grab your whole batch as a ZIP.
Why Convert PNG to WebP
WebP gives you PNG-style transparency at a fraction of the size. Converting from PNG helps when:
Dramatically smaller files
WebP is often 60–80% smaller than a PNG, which is a huge win for website speed and storage.
Transparency is preserved
Unlike JPG, WebP keeps the transparent areas of your PNG perfectly — ideal for logos and UI graphics.
Lossless option available
Turn on Lossless for a pixel-perfect WebP that's still smaller than the PNG, or leave it off for the smallest file.
Better website performance
Smaller graphics improve loading time and Core Web Vitals, helping both users and SEO.
Runs in your browser
Your images are converted on your own device and never uploaded, so it's private and instant.
Some old apps can't open WebP
Honest note: very old software may not read WebP. If you need it back, WebP to PNG restores a PNG.
Free and 100% Private
This converter is genuinely free and genuinely private. There is no account and no daily cap — and because every image is processed by your own browser, your files never leave your device. Nothing is uploaded, stored or seen by anyone, and your WebP files have no watermark.
Need a PNG back? Use WebP to PNG. Converting photos instead of graphics? Try JPG to WebP, or shrink files further with Compress Image.
PNG to WebP on Any Device
How to convert PNG to WebP on Windows
Open this page in Chrome, Edge or Firefox, drop your .png files, choose a quality and convert. You get much smaller WebP files ready for the web.
How to convert PNG to WebP on Mac
Open the page in Safari or Chrome, add your PNG images, and download the WebP files. Everything runs locally, so it's fast and private.
How to convert PNG to WebP on iPhone or Android
Open this page in your phone's browser, tap to pick the PNG files, convert, and save the WebP files to your device.
How to convert PNG to WebP with transparency
Just convert — WebP keeps the transparency of your PNG automatically, so logos and graphics stay see-through.
How to convert PNG to WebP losslessly
Turn on the Lossless toggle for a pixel-perfect WebP that's still smaller than the PNG. Leave it off for the smallest possible file.
How to bulk convert PNG to WebP
Add as many PNG files as you like — this tool converts them all in one batch and lets you download every WebP as a single ZIP.
Frequently Asked Questions
How do I convert PNG to WebP for free?
Add your PNG images above and click Convert. Each becomes a smaller WebP in seconds — completely free, with no signup and no watermark.
Are my images uploaded to a server?
No. PNG files are converted right inside your browser, so your images never leave your device. Nothing is uploaded, stored or seen by anyone.
Does it keep transparency?
Yes. WebP supports transparency, so any transparent areas of your PNG are preserved perfectly.
How much smaller is WebP than PNG?
Often 60–80% smaller. The tool shows the exact before-and-after size and percentage saved for each file.
What is the Lossless option?
Lossless makes a pixel-perfect WebP — identical to the PNG but still smaller. Turn it off for the smallest, visually-identical file.
Can I convert many PNG images at once?
Yes. Add as many as you like, convert them in one batch, then download each WebP or all of them together as a single ZIP.
Does it keep the full resolution?
Yes. The WebP has exactly the same width and height as your PNG — nothing is resized or cropped.
Do browsers support WebP?
Yes. Every current browser displays WebP natively. Export requires a modern browser like Chrome, Edge or Firefox.
Does it work on my phone?
Yes. It runs in any modern mobile browser on iPhone and Android — pick your PNG files and save the WebP files.
Is there a file size or count limit?
There is no fixed limit. Very large images just take a moment longer since everything runs on your device.
Is this PNG to WebP converter really free?
Completely free, with no account, no watermark, no limit and no premium wall.
100% private — your PNG images are converted right here in your browser and never uploaded to any server.
Last updated: July 2026 · FlipMyFormat PNG to WebP Converter
Written and maintained by the FlipMyFormat team