Convert PNG to WebP — Free, Fast & Private
WebP offers the best of both worlds — small file sizes like JPEG and full transparency support like PNG. Converting PNG to WebP typically reduces file size by 40-60% while maintaining pixel-perfect transparency. This makes it the ideal format for website logos, icons, illustrations, and any graphic that needs a transparent background.
For web developers and designers, PNG to WebP conversion is one of the highest-impact performance optimizations available. A single page may load 10-20 PNG assets — converting them all to WebP can reduce total page weight by several megabytes, dramatically improving Core Web Vitals scores and Google rankings.
All modern browsers support WebP with transparency: Chrome, Firefox, Edge, Safari (14.6+), and Opera — covering over 97% of web users. The days of needing PNG as a fallback are essentially over for most websites.
MiniPx handles the conversion entirely in your browser. Your PNG files are never uploaded to any server. Unlike TinyPNG or Squoosh's hosted version, MiniPx processes everything client-side, making it safe for proprietary design assets, logos, and unreleased graphics.
For maximum compression with transparency, use the Smart preset. For pixel-perfect lossless conversion, use the Gentle preset. Both preserve the alpha channel completely — transparent areas remain transparent in the WebP output. If WebP turns out not to be the right target, every other direction — JPG, AVIF, or back to PNG — lives on the PNG converter.