Get Started

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Learn more

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Common use cases

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Open a document

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Save a document

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Viewer

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UI Customization

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Annotations

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Collaboration

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Forms

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Signature

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Measurement

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PDF.js Express REST API

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Open a document from file system

If you have the File object, from a file picker for example, you can pass the object directly to loadDocument function.

<!-- add our input and a label -->
<label for="file_upload">Choose A file</label>
<input type="file" id="file_upload" name="file_upload" accept=".pdf">

<div id='viewer' style='width: 1024px; height: 600px;'></div>

<script>
  const input = document.getElementById('file_upload');

  WebViewer(...)
    .then(instance => {
      input.addEventListener('change', () => {
        // Get the file from the input
        const file = input.files[0];
        instance.loadDocument(file, { filename: file.name });
      });

      const { docViewer } = instance;
      docViewer.on('documentLoaded', () => {
        // perform document operations
      });
    });
</script>