title: How to display a local Excel spreadsheet with ngx-doc-viewer
body: <p>I am trying to display an excel file that resides on the webserver using ngx-doc-viewer. I cannot find any examples of how to do this. It's a mystery.</p>
  
  <p>I tried this:</p>
  
  <pre><code>&lt;div class="viewer_container"&gt;
        &lt;ngx-doc-viewer [url]="https://example.com/Docs/voucher.xlsx" viewer="office" style="width:100%;height:1200px;"&gt;&lt;/ngx-doc-viewer&gt;
  </code></pre>
  
  <p>I'm guessing the viewer="office" refers to 365 or some online repository and not a local file?</p>