Change default zoom level

Technical Support
1

Which product are you using?
PDF.js Express Viewer

PDF.js Express Version
3.7.107

Detailed description of issue
Is it possible to load a pdf with a different zoom level than the default? Or even better to say that the pdf should take up the full width of the page.
THANKS.

3

Hi there,

Thank you for contacting pdf.js express forums,

You can use the setFitMode to set the fit mode of the viewer:
https://pdfjs.express/api/UI.html#.setFitMode__anchor

WebViewer(...)
  .then(function(instance) {
    var docViewer = instance.Core.documentViewer;
    var FitMode = instance.UI.FitMode;

    // you must have a document loaded when calling this api
    docViewer.addEventListener('documentLoaded', function() {
      instance.UI.setFitMode(FitMode.FitWidth);
    });
  });

If you want to set the zoom level of the viewer, you can use the setZoomLevel API:
https://pdfjs.express/api/UI.html#.setZoomLevel__anchor

Best regards,
Kevin Kim