Removing pages from a PDF on iOS

Nutrient iOS SDK lets you remove the pages of a document using the Processor or the Document Editor APIs.

Using the Processor API

To remove pages via the Processor API, load your document and then configure the page removal parameters on a Processor.Configuration instance. Processor is a great choice if you want to build an automated document processing operation:

let document = ...

guard let configuration = Processor.Configuration(document: document) else {
    print("Could not create a processor configuration. The document might be locked or invalid.")
    return
}

// Remove the first page. This API can be used to remove multiple pages at the same time.
configuration.removePages(IndexSet(integer: 0))

let processor = Processor(configuration: configuration, securityOptions: nil)
do {
    // Write the modified document. This can be used to initialize
    // and present a new Nutrient document.
    try processor.write(toFileURL: destinationURL)
} catch {
    print(error)
}

Using Document Editor

Page removal is also available as part of the Document Editor API. Document Editor is particularly useful if you want to build a general-purpose UI for manipulating pages, as it provides helpers that make building a document editing UI easy.

Here’s how you can use Document Editor to remove the current page of a displayed document:

// Instance method on a `PDFViewController` subclass.
@objc private func removePage() {
    guard let document = document, let editor = PDFDocumentEditor(document: document) else {
        print("Document editing not available.")
        return
    }

    // Remove the currently visible page.
    editor.removePages(IndexSet(integer: IndexSet.Element(pageIndex)))

    editor.save { _, error in
        if let error = error {
            print("Error while saving: \(error)")
        } else {
            DispatchQueue.main.async {
                // Reload the document in the UI.
                self.reloadData()
            }
        }
    }
}

Using the built-in UI

Nutrient iOS SDK comes with a prebuilt user interface for document editing that includes an option to remove pages. To learn more, check out the document editor UI overview.