PNG Converter
Convert images to PNG format with lossless compression and optional resize.
PNG Converter
Convert images to PNG format with lossless compression and optional resize.
About the PNG converter
Lossless bitmap output
PNG conversion is useful when the output needs transparency, sharp text, logos, or UI screenshots. The tool redraws the decoded bitmap and exports image/png, so there is no quality slider; the optional maximum-width setting only changes dimensions while preserving the aspect ratio.
Input support follows the browser
The worker uses the browser image pipeline to decode JPEG, PNG, GIF, BMP, WebP, or AVIF when supported, then writes a fresh PNG file. It does not batch multiple uploads, preserve animation frames, or keep original metadata from the source container.
FAQ
Common questions and answers about this topic.
Are my images uploaded to a server?
No. All conversion runs entirely in your browser inside a Web Worker. Your images never leave your device, ensuring complete privacy.
When should I use PNG instead of JPG?
Use PNG for screenshots, logos, line art, illustrations, and any image with sharp edges, text, or transparency. JPG is better for photographs since it compresses smoother gradients more efficiently with lossy compression.
Will transparency be preserved?
Yes. PNG fully supports an alpha channel, so transparent regions in WebP, AVIF, or original PNG inputs are preserved in the output. Inputs without alpha (such as JPG or BMP) will simply produce an opaque PNG.