Convert PNG to WebP Online Free
Convert PNG images to WebP for up to 26% smaller files with lossless compression, or even greater savings with lossy mode - all while preserving transparency.
To convert PNG to WebP, drop your file into the converter. WebP can compress images losslessly like PNG but at smaller file sizes, and it supports full alpha channel transparency. The conversion happens in your browser - files are never uploaded to any server.
Convert PNG to WebP
Drop your PNG file here to convert it instantly
Drag & drop your .png file here, or click to browse
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PNG vs WebP: Format Comparison
Key differences between the two formats
When to Convert
Common scenarios where this conversion is useful
Optimizing website graphics
PNG logos, icons, and UI elements with transparency convert beautifully to WebP. You keep the transparency but with files that are 26% or more smaller.
Reducing CSS sprite sheet sizes
Sprite sheets with many small icons benefit dramatically from WebP's superior compression. The visual quality remains identical while bandwidth drops.
Optimizing screenshots for documentation
Technical documentation often uses PNG screenshots. Converting to WebP reduces page weight for online docs without any visible quality difference.
E-commerce product images with transparency
Product photos on transparent backgrounds are often stored as large PNGs. WebP preserves the transparency while cutting file size, improving page speed and SEO.
How to Convert PNG to WebP
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1
Add your PNG file
Drag and drop your PNG image into the converter, or click browse to select it.
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2
Compressed with WebP
Your browser converts the PNG to WebP format, achieving significant file size reduction while preserving transparency.
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3
Download the WebP
Save the optimized WebP file. It preserves all transparency from the original PNG in a smaller package.
Frequently Asked Questions
Yes. WebP fully supports alpha channel transparency, just like PNG. All transparent areas in your PNG are perfectly preserved in the WebP output.
According to Google's studies, WebP lossless images are 26% smaller than PNG on average. For some images the savings can be even greater. With lossy WebP, savings can reach 60-80% compared to PNG.
The converter uses WebP's lossy mode at high quality (92%) by default, which provides the best size savings while being visually indistinguishable from the source. Future updates will add a lossless option.
Keep PNG when you need maximum compatibility with older software, when exact pixel reproduction is critical (like pixel art), or when you need 16-bit per channel color depth for professional workflows.
Yes. All modern browsers render WebP with transparency correctly in CSS background-image, HTML img tags, and other contexts. WebP is a direct drop-in replacement for transparent PNGs.
No. The WebP output has the same pixel dimensions as your original PNG. Only the file format and compression change.
The converter processes the first frame of animated PNGs. For animated content, consider converting to WebP animation or GIF format instead.
Yes. Select multiple PNG files at once and they'll all be converted to WebP simultaneously in your browser.
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