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Internationalization: changing the language in PDF Viewer

This JavaScript sample lets you change the language displayed in tooltips when viewing documents in PDF Viewer. Compatible with all browsers (including IE11) and mobile devices without using plug-ins. Launch the Internationalization Demo to see an example of how you can toggle between English, French and Chinese Simplified in WebViewer. Learn more about our JavaScript PDF Library.

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JavaScript

HTML

WebViewer(
  {
    path: '../../../lib',
    additionalTranslations: {
      language: 'en',
      translations: { 'option.toolbarGroup.toolbarGroup-View': 'Edited View Label' },
    },
    initialDoc: 'https://pdftron.s3.amazonaws.com/downloads/pl/demo-annotated.pdf',
  },
  document.getElementById('viewer')
).then(instance => {
  samplesSetup(instance);

  const currentLanguage = instance.UI.getCurrentLanguage();
  const radioButton = document.querySelector(`form > #${currentLanguage}`);
  if (radioButton) {
    radioButton.checked = true;
  }

  document.getElementById('form').onchange = e => {
    // Set language
    instance.UI.setLanguage(e.target.id);
  };
});