PNG to WebP Converter
Convert PNG to WebP to cut file size while keeping transparency. Choose lossless for graphics or lossy for photographs.
Last reviewed by the Radiatus Cloud team
Drag & drop an image here, or click to choose
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Two modes, and picking correctly matters
Lossless WebP preserves every pixel and is typically around 26 percent smaller than the equivalent PNG. Lossy WebP discards information and can be dramatically smaller, often by 70 percent or more. For screenshots, logos, diagrams and anything with sharp edges or text, use lossless: lossy compression produces visible fringing around hard edges, which is exactly what those images are made of. For photographs saved as PNG, lossy is the right answer and the saving is enormous.
PNG photographs are the big win
A photograph stored as PNG is usually several times larger than it needs to be, because PNG's lossless compression is designed for flat colour and sharp edges, not continuous tone. Converting one to lossy WebP at quality 80 frequently cuts 80 to 90 percent of the file with no visible difference. If your site is heavy, this single conversion is often the largest available win.
Transparency carries over
WebP supports an alpha channel in both lossy and lossless modes, which PNG's main competitor JPEG never could. That combination, transparency plus efficient photographic compression, is the reason the format exists.
Compatibility is settled
Every current browser supports WebP, Safari included since version 14. The remaining refusals are older desktop software and some email clients, not browsers. For images served on a website there is no practical compatibility argument left.
Keep the PNG
If the PNG is a working master you will edit again, keep it. Converting to lossy WebP and later editing that file compounds loss across generations. Treat WebP as an export format and the PNG as the source.
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Frequently Asked Questions
Should I use lossy or lossless WebP?
Lossless for screenshots, logos and anything with sharp edges or text, where lossy causes visible fringing. Lossy for photographs, where the saving is enormous and the loss invisible.
How much smaller will the file be?
Around 26 percent for lossless. For a photograph stored as PNG, lossy WebP frequently cuts 80 to 90 percent, because PNG compression is designed for flat colour rather than continuous tone.
Does WebP keep transparency?
Yes, in both lossy and lossless modes. That combination of an alpha channel with efficient photographic compression is the reason the format was created.
Is WebP safe to use now?
For websites, yes. Every current browser supports it including Safari since version 14. The remaining gaps are older desktop editors and some email clients, not browsers.
Should I delete the original PNG?
Not if it is a working master. Editing an exported lossy WebP compounds loss across generations. Treat WebP as an export format and keep the PNG as the source.
Privacy & Security
All processing happens locally in your browser — nothing is uploaded.
How to Use
Upload an image; it is converted in your browser. Click Download to save it.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
Related Tools
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ImageExtract hidden EXIF data (Camera, GPS, Settings) from images.
Favicon Generator
ImageGenerate favicons and app icons at every required size from one source image, with the exact HTML to reference them.
Placeholder Image Generator
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