From the Knowledgebase

Problems on mobile devices

Sometimes mobile devices will cause problems:

  • Image quality is low - PDF appears pixellated and unreadable, or
  • The toolbar is difficult to locate - it keeps moving out of view
  • Reloading of page until the page fails

These can be caused by conflicts within your own site's settings, e.g. theme styles.

You can try an advanced setting to see if that helps. Go to Settings -> PDF Embedder, and click the Mobile tab.

Check the box labeled as "Enable if you are experiencing quality issues on mobiles", and then click the "Save Changes" button.

This will add the following HTML to the head section of every page on your site:

<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0" />Code language: HTML, XML (xml)

This should have the effect on most mobile browsers of disabling the browser's own zoom feature, meaning all zooming is carried out by the plugin itself. Sometimes, conflicts between the browser and the plugin can cause complications.

Please note you may also need to remove any existing meta[name="viewport"]tags from your theme's header.