Convert PNG to WebP Online Free
Transform your PNG images into lightweight WebP format directly in your browser. Reduce file sizes by up to 80% without noticeable quality loss. Our free online PNG to WebP converter processes everything locally — your images never get uploaded to any server. Perfect for web developers, designers, and content creators who need fast, private, and reliable image conversion.
Fast Conversion
Browser-based conversion using Canvas API — no server delays.
Up to 80% Smaller
WebP offers superior compression compared to PNG.
100% Private
All processing happens locally. Your files never leave your device.
Batch Processing
Convert up to 10 PNG images at once with automatic sequential processing.
Drop images here or click to browse
Supports PNG • JPG • JPEG (max 10 files)
No images selected. Drop your PNG or JPG files above to get started.
Why Convert PNG to WebP?
PNG is a popular format for images with transparency, but it often produces large file sizes that slow down websites. WebP, developed by Google, offers both lossy and lossless compression with support for transparency, making it the ideal replacement for PNG on the modern web.
By converting your PNG images to WebP, you can reduce file sizes by 60–80% while maintaining visual quality. This means faster page loads, lower bandwidth costs, and a better experience for your visitors — especially on mobile devices.
How to Convert PNG to WebP
- Drag and drop your PNG files into the upload area above, or click to browse.
- Adjust the quality slider to balance file size and image quality.
- Conversion starts automatically — watch the progress for each file.
- Download individual WebP files or all converted images as a ZIP archive.
Frequently Asked Questions
Is PNG to WebP conversion lossy?
WebP supports both lossy and lossless compression. Our tool uses lossy compression by default to achieve the best file size reduction (up to 80% smaller). If your PNG contains transparency, it is preserved in the output WebP — something JPEG cannot do.
Can I convert multiple PNG files at once?
Yes! You can upload up to 10 PNG images at a time. The tool processes them sequentially and shows real-time progress for each file. Once finished, you can download individual WebP files or all of them as a single ZIP archive.
Is my data safe when using this converter?
Absolutely. All image processing happens right in your browser using the Canvas API. Your PNG files never leave your device — there are no server uploads, no cloud storage, and no data collection. This is a fully private, offline-capable conversion tool.