Choose a PNG
Click the upload box or drag a .png image into the converter.
Free online image tool
PNG to WEBP Converter
Convert PNG images to WEBP directly in your browser. Keep transparency, adjust quality, no upload.
Private browser conversion
Convert PNG to WEBP
Choose a PNG image and convert it locally in your browser. Transparency is preserved. The file never leaves your device.
Input
Local conversion No server upload Transparency kept Free to use
How it works
Convert a PNG file to WEBP in seconds.
Pick quality
Slide the quality control to balance visual detail against file size. 80 is a good default.
Download WEBP
Preview the output and save the WEBP file immediately. Transparency is preserved.
Why convert
Why convert PNG to WEBP?
PNG is great for screenshots, logos and graphics with transparency, but it produces large files — often 3–8× bigger than necessary. WEBP is a modern image format supported by every current browser that keeps PNG's transparency support while cutting file size by 40–90% at high quality. Smaller WEBP files load faster, use less bandwidth, and directly improve Core Web Vitals metrics such as LCP.
Use cases
Who benefits from PNG to WEBP?
For website owners
WEBP is one of the biggest wins for page speed. Replace PNG hero images, screenshots and icons with WEBP to speed up LCP and shrink CDN bills.
For designers
WEBP preserves transparency, so PNG assets exported from Figma, Sketch or Photoshop can be converted directly without adding a white background.
For developers
Ship smaller assets in web apps and marketing pages without touching your build pipeline — convert PNG to WEBP in the browser, no CLI, no ImageMagick.
FAQ
PNG to WEBP questions.
Are my images uploaded to a server?
No. Conversion happens locally in your browser using canvas. The selected PNG file is not sent to any server.
Does WEBP support transparency?
Yes. WEBP has a full alpha channel, so any transparent areas in your PNG remain transparent in the WEBP output.
How much smaller will the WEBP be?
For most photos and screenshots, WEBP is 40–90% smaller than PNG at quality 75–85. Very small graphics may not shrink as dramatically, but they almost always still get smaller.
What quality setting should I use?
80 is a great default. Use 85–95 for photography where every detail matters. Use 60–75 for small icons and previews where file size is more important than pixel-perfect fidelity.
Is the conversion lossy or lossless?
This tool produces lossy WEBP at the quality level you choose. Lossy WEBP at quality 80–90 is visually indistinguishable from PNG for almost all real-world images while being much smaller.
Does it work on mobile?
Yes. Modern mobile browsers on iPhone and Android support file selection and canvas-based WEBP encoding.
What is the maximum file size?
There is no hard limit, but very large images (50 MB+) may slow down your browser. For typical PNGs, conversion takes less than a second.
Can I convert multiple PNG files at once?
You can convert files one after another — there is no daily limit or queue. Load a new PNG and the converter resets instantly.
Which browsers can open the WEBP output?
Every current browser (Chrome, Firefox, Safari 14+, Edge) opens WEBP natively. Windows 10+ and macOS support WEBP in Explorer, Finder and most image viewers.
Comparison
How this converter compares.
Upload-based converters like CloudConvert send your PNG to a remote server, which is slower, has file-size limits and creates a privacy risk. Desktop tools like ImageMagick or squoosh-cli require installation. Our converter runs entirely in your browser — no upload, no file-size limits, no software to install, and it is completely free.