Convert PNG to WebP online
Turn PNGs into WebP files about 30% smaller with no visible quality loss. Runs entirely in your browser — nothing is uploaded.
Open source batch image compression tool, supports JPG/JPEG/PNG/WEBP/GIF/SVG/AVIF/HEIC/HEIF format
Drop images or click to choose files — everything stays on your device
Features
About 30% smaller
WebP uses a more modern compression algorithm, typically 25–35% smaller than PNG at the same quality.
Alpha channel preserved
Transparent areas are fully retained instead of being flattened to black like JPG.
Batch conversion
Drop in many PNGs or a whole folder, then download the results as a ZIP.
Use cases
Web icons and sprites
Converting PNG sprites to WebP speeds up first paint while keeping transparency.
App icons and UI assets
Ship smaller assets to reduce bundle size and bandwidth usage.
FAQ
Does converting PNG to WebP lose quality?
Not noticeably. WebP supports both lossy and lossless modes; at 85% quality the result is visually identical to the original. Use 100% quality for guaranteed lossless output.
Are my images uploaded to a server?
No. Conversion runs locally in your browser via WebAssembly. Your images never leave your device.
Is WebP supported everywhere?
WebP works in Chrome, Edge, Firefox and Safari 14+, covering over 97% of browsers.