Convert PNG to WEBP — Free
Files convert instantly in your browser — 100% private, any file size, no account needed.
Drop your PNG file here
or click to browse — any size
Conversion runs entirely in your browser — your file never leaves your device.
How to convert PNG to WEBP
Convert your PNG images to the efficient WEBP format with BoltConverter. Our free online tool processes your files directly in your browser using WebAssembly, ensuring fast conversions. WEBP files offer smaller sizes and better performance for websites.
Your images never leave your device, guaranteeing complete privacy and security. BoltConverter makes converting PNG to WEBP simple and quick, without any uploads or server processing.
Select PNG Files
Click the 'Choose Files' button or drag and drop your PNG images onto the page.
Conversion Starts
BoltConverter automatically begins converting your PNG files to WEBP in your browser.
Download WEBP Files
Once converted, click the 'Download' button next to each WEBP file.
Save All (Optional)
Use the 'Download All' button to get a ZIP archive of all your new WEBP images.
Frequently asked questions
Is BoltConverter free to use?
Yes, BoltConverter is a completely free online tool for converting PNG to WEBP.
Do my files get uploaded to a server?
No, your files are processed entirely in your browser using WebAssembly. They never leave your device.
Is there a file size limit?
Since all conversions happen in your browser, there is no server-imposed file size limit. Your device's available memory is the only constraint.
What about the output quality?
BoltConverter optimizes for a good balance of quality and file size reduction when converting to WEBP.
Can I convert multiple PNG files at once?
Yes, you can select and convert multiple PNG images to WEBP simultaneously with BoltConverter.