PNG to WebP Converter
Convert PNG images to WebP while preserving full transparency.
Drop your image here
Drag & drop single photo for Studio Mode, or multiple photos for 1-Click Batch Processing
Your images stay on your device
Processing happens 100% locally in your browser. Files are never uploaded to any cloud server.
How to use this tool
Upload PNG File
Select your transparent or graphic PNG.
Configure Quality
Choose lossy or lossless compression setting.
Save WebP
Download your lightweight transparent WebP.
Why use Image Toolkit?
Full Alpha Transparency
Retains crisp transparent backgrounds without ugly halos.
Up to 80% Smaller
Massive file size reduction compared to heavy PNG assets.
How PNG to WebP Converter Works in Your Browser
Unlike conventional online conversion websites that upload your files to remote cloud servers, Lumino processes your media 100% client-side inside your browser sandbox using modern WebAssembly (WASM), WebGPU, and the HTML5 Canvas 2D API.
This means your sensitive photos, identity cards, passport scans, and proprietary design files are processed directly on your local device hardware (RAM/GPU) and are never transmitted across the internet.
Everything You Need to Know
Clear answers on privacy, security, file limits, and image quality.
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