Free Trial Support

Adding a seamless Word, Excel, and PowerPoint viewer to iOS apps is made simple with the PDFTron PDF SDK. Office files are converted directly to PDF in the client , and then displayed with a PDF viewer. No server, Microsoft Office license, or other third party software needed.

Although this blog will explain how to add an Office viewer to iOS apps (Swift and Objective-C ), this is also possible on all major platforms through a single unified API, including Android and Xamarin .

If you are interested in trying this out for yourself you can download our free trial .

Step 1 - Convert From Office to PDF

First we'll convert the .doc, .docx, .pptx or .xlsx file to PDF directly in the client:

func ConvertOfficeFile(_ inPath: String, outPath: String, options: PTConversionOptions) {
    let pdfDoc = PTPDFDoc()
    PTConvert.office(toPDF: pdfDoc, in_filename: inPath, options: options)
    pdfDoc?.save(toFile: outPath, flags: e_ptremove_unused.rawValue)
}
Step 2 - Display the Documents
You can now display the converted file saved in outPath like this:
// Create a PTDocumentViewController
let documentController = PTDocumentViewController()

// The PTDocumentViewController must be in a navigation controller before a document can be opened
let navigationController = UINavigationController(rootViewController: documentController)

// Open an existing local file URL.
let fileURL: URL! = Bundle.main.url(forResource: "sample", withExtension: "pdf")


documentController.openDocument(with: fileURL)


// Show navigation (and document) controller.
self.present(navigationController, animated: true, completion: nil)
Here's what it looks like:
simple-word
You can read more about displaying a PDF  in our documentation.
Converting Other File Formats
PDFTron’s iOS PDF library can also convert a variety of other file formats  to PDF for viewing, such as images (.jpeg, .jpg, .gif, .png, .bmp etc.), markdown (.md) or comic book archive (.cbz). Here's how:
func ConvertNonPDFFile(_ inPath: String, outPath: String, options: PTConversionOptions) {
    let documentConversion = PTConvert.streamingPDFConversion(inPath, options: options)
    documentConversion?.convert()
    let pdfDoc = documentConversion?.getDoc()
    pdfDoc?.save(toFile: outPath, flags: e_ptremove_unused.rawValue)
}
These converted files can now be viewed in the same way as the PDF.
Adding More Functionality
For a richer document experience, the PDFTron SDK makes it easy to add more functionality to the viewer:
Conclusion
Adding an Office document viewer to your iOS app is simple with the PDFTron SDK. To give it a try, download a free trial  and check out our iOS Office viewer documentation .
For further guidance, please get in touch . The developers who helped build our SDK from the ground up would be happy to walk you through your options.