A PDF page contains text, vectors, images, and layout instructions rather than one fixed bitmap. This converter uses PDF.js to draw the complete page onto a browser canvas, preserving everything visible in the page. PNG keeps text and diagrams crisp, while JPG or WebP can make photo-heavy pages much smaller.
Resolution changes the actual pixel dimensions. Because PDF page dimensions use points at 72 points per inch, a US Letter page rendered at 300 DPI becomes about 2550 by 3300 pixels. Conversion happens locally, and the finished images are created as browser downloads without sending the source document to a processing server.