PNG to WebP Converter Online
Get a meaningfully smaller file than PNG while keeping the transparent background intact.
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JPG, PNG, WebP, BMP · Multiple files supported
How to Convert PNG to WebP?
Nothing is uploaded. The png file is decoded and re-encoded as webp inside this tab.
Add your PNG files
Drag them in or use Choose Files. Batches are fine.
WebP is already selected
Set quality to 100 for logos and UI assets where edges must stay crisp. 90 is plenty for photographic content.
Convert and download
Everything runs locally, so the webp file saves straight to your device.
Why Convert PNG to WebP?
WebP lossless mode produces files 26% smaller than PNG, and unlike JPG, WebP fully supports alpha transparency. Convert PNG to WebP to get smaller files for web use without sacrificing the transparent backgrounds your logos and UI assets require.
About PNG
PNG is the lossless standard for logos, icons, UI screenshots, and design exports. It supports full alpha transparency and preserves every pixel exactly, but produces larger files than modern formats.
About WebP
WebP supports both lossless and lossy compression plus full alpha transparency. WebP lossless files are 26% smaller than equivalent PNGs. All modern browsers support WebP natively, making it the best choice for web-served images.
What Happens to Transparency
Fully preserved. WebP carries a real alpha channel, so transparent backgrounds survive the conversion intact. This is the single best reason to choose WebP over JPG when converting a PNG that has transparency.
File Size: What to Expect
WebP is typically 25 to 35% smaller than the source PNG at 90% quality, and the gap widens for photographic content. Small flat-colour graphics and icons sometimes barely change, because PNG already compresses that kind of content very efficiently.
When Not to Convert PNG to WebP
If the PNG is a small icon or a flat-colour graphic under roughly 10 KB, the saving is usually negligible and PNG has broader support across design and desktop tooling. Save the effort for your large images.
How the Conversion Works
Pixels are decoded from the PNG with the alpha channel intact and re-encoded by the browser's WebP coder. Setting the quality slider to 100 asks the encoder for its highest-fidelity output, which is what you want for graphics and UI assets.
Other PNG and WebP Conversions
Every pairing runs on the same browser-based converter.
Need a pairing that is not listed? The full image converter covers every combination of JPG, PNG, WebP and BMP.
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Frequently Asked Questions
Common questions about converting PNG to WebP online.
Why convert PNG to WebP?
WebP lossless mode produces files 26% smaller than PNG, and unlike JPG, WebP fully supports alpha transparency. Convert PNG to WebP to get smaller files for web use without sacrificing the transparent backgrounds your logos and UI assets require.
What happens to transparency when converting PNG to WebP?
Fully preserved. WebP carries a real alpha channel, so transparent backgrounds survive the conversion intact. This is the single best reason to choose WebP over JPG when converting a PNG that has transparency.
How much will the file size change?
WebP is typically 25 to 35% smaller than the source PNG at 90% quality, and the gap widens for photographic content. Small flat-colour graphics and icons sometimes barely change, because PNG already compresses that kind of content very efficiently.
When should I not convert PNG to WebP?
If the PNG is a small icon or a flat-colour graphic under roughly 10 KB, the saving is usually negligible and PNG has broader support across design and desktop tooling. Save the effort for your large images.
Does WebP keep my PNG's transparent background?
Yes. WebP supports full 8-bit alpha, so transparency is carried through the conversion unchanged.
Should I convert every PNG on my site to WebP?
Convert the large ones. Photographs and big graphics see real savings. Tiny icons and sprites often gain nothing and cost you some tooling compatibility.
Are my PNG images uploaded to a server?
No. The conversion runs entirely in your browser. Your PNG files never leave your device and are never sent anywhere.