Edit PowerPoint Presentations in Node.js Leave feedback

PowerPoint presentations are supported by GroupDocs.Editor in various formats such as PPT, PPTX, PPTM, PPS(X/M), POT(X/M), and others. The GroupDocs.Editor for Node.js provides separate load, edit, and save options for these formats.

Unlike word processing formats, PowerPoint presentations don’t have pages but instead consist of slides, which are edited one at a time. A presentation with multiple slides is loaded into the Editor class, and to edit a specific slide, the user selects its index using PresentationEditOptions. The user will receive an EditableDocument representing that particular slide. To edit another slide, repeat the process by calling Editor.edit() again with a different slide index.

GroupDocs.Editor also supports password-protected presentations. When opening a password-protected document, the password must be specified in the PresentationLoadOptions. Similarly, password protection can be applied when saving the document by using PresentationSaveOptions.

To load a presentation in GroupDocs.Editor for Node.js, use the PresentationLoadOptions class. This is particularly important if the presentation is password-protected.

Here’s an example of loading a presentation with a password:

const groupdocs = require('groupdocs-editor');
const Editor = groupdocs.Editor;
const PresentationLoadOptions = groupdocs.options.PresentationLoadOptions;

const inputPath = "C://input//presentation.pptx";
const loadOptions = new PresentationLoadOptions();
loadOptions.password = "password";

const editor = new Editor(inputPath, loadOptions);

To edit a PowerPoint presentation, use the PresentationEditOptions class. This class allows you to select a slide and specify whether hidden slides should be shown.

• slideNumber: A zero-based index to specify which slide to edit. If not set, the first slide is selected by default.
• showHiddenSlides: A boolean flag that determines whether hidden slides should be shown.

Here’s an example that demonstrates how to use these options:

const PresentationEditOptions = groupdocs.options.PresentationEditOptions;

// Edit the first slide
const firstSlide = editor.edit(); // Default behavior, edits the first slide

// Edit the second slide
const editOptions2 = new PresentationEditOptions();
editOptions2.slideNumber = 1;  // Index is zero-based
const secondSlide = editor.edit(editOptions2);

// Edit the third slide and show hidden slides if they exist
const editOptions3 = new PresentationEditOptions();
editOptions3.slideNumber = 2;  // Third slide
editOptions3.showHiddenSlides = true;
const thirdSlide = editor.edit(editOptions3);

To save a PowerPoint presentation after editing, use the PresentationSaveOptions class. You must specify the output format using the PresentationFormats structure and can optionally set a password for the output file.

Here’s an example of saving an edited slide in the PPTM format with password protection:

const PresentationSaveOptions = groupdocs.options.PresentationSaveOptions;
const PresentationFormats = groupdocs.formats.PresentationFormats;

// Create save options with output format and password
const saveOptions = new PresentationSaveOptions(PresentationFormats.Pptm);
saveOptions.password = "new password";

// Assume we have an EditableDocument instance (after editing)
const outputStream = /* obtain output stream */;

// Save the edited presentation
editor.save(editedDocument, outputStream, saveOptions);

In GroupDocs.Editor for Node.js, PowerPoint presentations are edited slide by slide. By using the Editor class in conjunction with PresentationEditOptions and PresentationSaveOptions, users can load, edit, and save PowerPoint presentations efficiently while applying features like password protection.

This adapted guide reflects the Node.js version of GroupDocs.Editor, translating the steps from Java to Node.js while preserving the same functionality. It provides a clear workflow for loading, editing, and saving PowerPoint presentations in Node.js.

• Inserting edited slide into existing presentation in Node.js and Java
• Generating slides preview for presentations