Convert MS Office (Word, Excel, PowerPoint) to PDF using JavaScript

Convert an MS Office file to a PDF document without any external third-party dependencies in a browser. WebViewer already allows you to view Office documents. The below sample shows how to convert the Office document to a PDF, without initializing WebViewer UI. (You can also check out our MS Office to PDF demo now.)

Setup

1. Install WebViewer by running npm i @pdftron/webviewer or download it here.
2. Copy core folder from node_modules/@pdftron/webviewer/public/core (if you downloaded the SDK, you will find core folder in WebViewer/lib/ ) to a location that can serve static assets. For example, public folder in a React app.
3. Reference webviewer-core.min.js script in index.html and create a JS function to perform the conversion.

html> body> script src="../core/webviewer-core.min.js">/script> script> (async function()  Core.setWorkerPath('../core'); const licenseKey = 'Insert commercial license key here after purchase'; await PDFNet.initialize(); // perform the conversion with no optional parameters const buf = await Core.office2PDFBuffer('/path/to/file.docx',  l: licenseKey >); //optionally save the blob to a file or upload to a server const blob = new Blob([buf],  type: 'application/pdf' >); >)() /script> /body> /html>

Additional font resources

WebViewer will automatically use substitute fonts hosted on a web server when a font is not embedded in the source document. The fallback fonts are hosted with Apryse by default but if this is a concern, you can host the fonts on your own servers. See this FAQ for more details.

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