Some test text!


Open a document

There are a few ways to open a document such as from a URL, a blob, the filesystem, or base64 data. Additionally, there are loading options to help WebViewer determine the type of the file being loaded.

Opening a document from ArrayBuffer

If your document is already in ArrayBuffer format you can convert the ArrayBuffer object to a Blob and then pass resulting Blob directly to loadDocument function.

  .then(instance => {

    // `arrayBuffer` is your buffer data which can come
    // from sources such as a server or the filesystem
    const arr = new Uint8Array(arrayBuffer);
    const blob = new Blob([arr], { type: 'application/pdf' });
    instance.loadDocument(blob, { filename: 'myfile.pdf' });

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

See more WebViewer events such as documentLoaded to understand when to execute API operations.

If you run into any issues loading a document, please visit our FAQ.

Get the answers you need: Support


Free Trial

Get unlimited trial usage of PDFTron SDK to bring accurate, reliable, and fast document processing capabilities to any application or workflow.

Select a platform to get started with your free trial.

Unlimited usage. No email address required.

Join our live demo to learn about use cases & capabilities for WebViewer

Learn more