Which product are you using?
PDF.js Express Viewer
PDF.js Express Version
Detailed description of issue
tried aligning diagonal water mark to left side but no movement it will be in center of the screen,
water mark to be moved to left side
Does your issue happen with every document, or just one?
All the document
// Draw diagonal watermark in middle of the document
fontSize: 25, // or even smaller size
opacity: 50, // from 0 to 100
// Draw header watermark });