PNG to PDF conversion is the process of embedding a PNG (Portable Network Graphics) image into a PDF (Portable Document Format) file. This transformation allows you to share PNG images with transparency as universally-compatible PDF documents that can be opened on any device.

The conversion process uses the jsPDF JavaScript library to create PDF documents entirely in your browser. The PNG image is automatically scaled to fit on a standard A4 page (210×297mm) while maintaining its original aspect ratio and transparency, ensuring the image looks professional when printed or viewed on any device.

When you convert a PNG image to PDF, the browser first loads the PNG file and calculates the optimal dimensions to fit it on an A4-sized PDF page. The image is scaled proportionally—if it's wider than it is tall, the PDF uses landscape orientation; otherwise, it uses portrait orientation.

The Image API loads the PNG file, and jsPDF creates a new PDF document with the appropriate page size and orientation. The PNG image is then embedded into the PDF, centered on the page with proper margins. The final PDF maintains the original image quality and preserves PNG transparency.

Unlike online converters that upload your files to a server, this tool processes everything locally using client-side JavaScript. Your PNG image never leaves your device, ensuring complete privacy and security. The conversion is instant, works offline, and can handle images up to 10MB in size.