PNG to WebP Converter
Converting PNG images to WebP delivers dramatically smaller file sizes — typically 30-50% smaller for lossless content and up to 80% smaller with lossy mode — while fully preserving transparency. WebP combines the best of PNG's quality and alpha channel support with far more efficient compression. For websites serving PNG graphics, logos, screenshots, icons, and UI elements, switching to WebP is one of the single highest-impact performance optimizations available. SublimePDF converts with full transparency preservation and gives you control over lossy vs. lossless output modes.
Convert PNG to WebP instantly in your browser — no file uploads, no registration, and completely free.
Drop your PNG files here
or click to browse — up to 50MB
How to Convert PNG to WebP Online
Upload your PNG images
Drag and drop one or more .png files. Images with transparency (alpha channels) are fully supported — the transparency is preserved in the WebP output.
Select compression mode and quality
Choose lossless WebP (pixel-identical to PNG but 30-50% smaller) or lossy WebP (visually similar, 50-80% smaller). For lossy mode, adjust the quality slider and preview the result with transparency intact and file size comparison.
Download your WebP images
Your .webp files retain full transparency and visual quality at a fraction of the original PNG file size. Download individually or as a ZIP for batch conversions.
PNG to WebP Converter Features
When to Convert PNG to WebP
- Optimize transparent PNG logos, favicons, and icons for web use without sacrificing the alpha channel
- Reduce page weight by converting UI screenshots, illustrations, and graphics from PNG to WebP
- Compress PNG game sprites and asset sheets to WebP for faster loading in web-based games and apps
- Convert PNG infographics, charts, and data visualizations to WebP for blog posts and landing pages
- Batch optimize a design system's entire PNG icon and illustration library into smaller WebP files for production
About PNG and WebP
What is PNG?
Portable Network Graphics (.png) — A lossless image format that supports transparency, ideal for graphics, logos, and screenshots. Learn more about PNG →
What is WebP?
WebP Image (.webp) — A modern image format developed by Google that provides superior compression for web images. Learn more about WebP →
Privacy & Security
Your files never leave your device. All conversion happens locally in your browser using WebAssembly technology.
PNG to WebP Conversion FAQ
Is transparency fully preserved when converting PNG to WebP?
How much smaller will WebP files be compared to PNG?
Should I use lossless or lossy mode?
Will the WebP images work in all modern browsers?
Can I convert PNG to WebP without any quality loss at all?
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