Convert PNG to WebP Online — 100% Client-Side & Private
WebP provides superior lossless and lossy compression for images on the web. Converting PNG to WebP reduces file size by an average of 65% to 80% while retaining transparent backgrounds.
When converting PNG to WebP on llmscope.link, your files are decoded and re-encoded entirely within your computer’s browser sandbox via the HTML5 Canvas API and WebAssembly. No image files or telemetry packets are ever uploaded, logged, or retained on any remote server.
| Specification | PNG (Source) | WebP (Target) |
|---|---|---|
| Compression Mechanism | Lossless DEFLATE algorithm (larger file sizes) | Predictive VP8/VP8L coding with entropy encoding (significantly smaller) |
| Alpha Transparency | Full 8-bit Alpha Channel support | Full 8-bit Alpha Channel support (lossless & lossy) |
| Animation Support | Static only | Supported |
| Browser Support | 100% universal across all browsers and operating systems | 97.5%+ (Chrome, Safari, Firefox, Edge, iOS Safari, Android) |
| Typical Data Delta | 60% to 85% size reduction | |
- Next.js / Web performance optimization
- Core Web Vitals improvement (LCP)
- Mobile responsive web design
- Bandwidth reduction
Select your PNG file
Drag and drop your PNG image into the converter or click the upload area.
Adjust quality settings
Select your preferred WebP quality (85% recommended for web graphics) or choose lossless mode.
Instant conversion
Your browser decodes the PNG and encodes the WebP stream locally inside WebAssembly / Canvas memory.
Download WebP
Click Download WebP to save your compressed, optimized image immediately.
Q:Will converting PNG to WebP maintain transparency?
Yes! WebP fully supports 8-bit alpha channels just like PNG, so transparent backgrounds are preserved with zero fringing.
Q:Are my images uploaded to any remote server?
Never. All conversion operations happen 100% locally in your browser memory using HTML5 Canvas and WebAssembly. No data leaves your machine.
Q:How much file size do I save with WebP?
Depending on the image complexity, WebP typically saves between 60% and 85% compared to raw unoptimized PNGs.
Q:Is WebP supported on Safari and iPhones?
Yes. Apple added full WebP support in iOS 14 and macOS Big Sur (Safari 14+). It is supported by all modern browsers today.