PNG to WebP Converter
Convert PNG images to WebP for dramatically smaller files. Transparency is fully preserved. Free, private, batch support.
Drop your PNG images here
or browse files — accepts .png files (transparency preserved)
Free PNG to WebP Converter
SmarterSources's PNG to WebP converter transforms your PNG images into the highly efficient WebP format directly in your browser. WebP supports full alpha-channel transparency just like PNG, but at a fraction of the file size — making it the perfect replacement for PNG on the web.
Why Convert PNG to WebP?
PNG files are excellent for lossless quality and transparency, but they tend to be large. WebP provides the same transparency support with dramatically better compression. Logos, icons, UI graphics, and screenshots that are typically saved as PNG can be converted to WebP for file size reductions of 50-80% or more, with no visible quality difference.
Transparency Fully Preserved
Unlike JPEG, WebP fully supports the alpha channel. When you convert a PNG with transparent areas to WebP, every pixel of transparency is preserved exactly as it was. This makes WebP the ideal modern replacement for PNG in web design, especially for logos, overlays, and graphics that need to sit on varied backgrounds.
How It Works
Drop your PNG files into the converter, adjust the quality slider, and click Convert All. The tool reads each image using the browser's built-in decoder, draws it to an off-screen canvas (preserving the alpha channel), and re-encodes it as WebP at your chosen quality level. Everything happens locally — your images are never uploaded to any server.
Privacy Guarantee
SmarterSources converts your PNG images entirely within your browser. No files are uploaded to any server. Your images never leave your device, making this the most private PNG to WebP converter available online.
Frequently Asked Questions
Is transparency preserved when converting PNG to WebP?
Yes, absolutely. WebP fully supports alpha-channel transparency, just like PNG. When you convert a transparent PNG to WebP, all transparent and semi-transparent pixels are preserved exactly as they appear in the original. Your logos, icons, and overlays will look identical.
How much smaller are WebP files compared to PNG?
The savings are often dramatic. WebP files with transparency are typically 50-80% smaller than their PNG equivalents. Simple graphics with flat colors (like logos and icons) tend to compress the most, while complex photographic images with transparency see savings of 40-60%. The exact reduction depends on image content and the quality setting you choose.
Do all browsers support WebP?
Yes. All modern browsers — Chrome, Firefox, Safari (14.1+), Edge, and Opera — fully support WebP, including WebP with transparency. Global browser support exceeds 97%, so it is safe to serve WebP images to virtually all web visitors.
What does the quality slider do for PNG to WebP conversion?
The quality slider controls the lossy compression level of the output WebP file. A higher value (closer to 1.00) preserves more detail at a larger file size, while a lower value produces smaller files with slightly more compression artifacts. For most images, the default of 0.80 offers an excellent balance. For graphics with sharp edges and text, try 0.90 or higher.
Can I convert multiple PNG files at once?
Yes. Drag and drop as many PNG files as you need, or use the file picker to select multiple files at once. Each image is converted individually with its own size comparison shown in the results. You can download files one at a time or all together. There is no limit on the number of files per batch.