Page Navigation

After loading a PDF document, you can programmatically interact with it, which allows you to view and transition between the pages like scrolling and jumping to specific pages.

// Previous page.
docViewer.previousPage();

// Next page.
docViewer.nextPage();

// Jump to a page.
docViewer.pageNumberChanged('3');

If you want to receive notifications when page numbers change, you can listen for the onPageNumberUpdated event.

Scroll

To scroll to specific distances in the horizontal and vertical directions, you can use the scrollTo function.

// Top and left are optional.
docViewer.scrollTo({
  top: 200,
  left: 100
});

To scroll a certain percentage of distance horizontally or vertically, you can use the scrollToPercent function.

// Top and left are optional.
docViewer.scrollToPercent({
  top: 20,
  left: 50
});

Scroll Mode

ComPDF for Web has two scrolling modes: Vertical and Horizontal. You can set the corresponding mode by using the following method.

docViewer.webViewerSwitchScrollMode(mode);

This is the parameters to apply different scroll modes.

Name	Required	Type	Description
mode	yes	number	Scroll Mode Parameter, Vertical: 0, Horizontal: 1

Thumbnails

Provide methods to render PDF pages as thumbnail images.