GroupDocsGists

// Folder containing source documents
string folderPath = "./input_documents";
string outputPath = "folder_binder.pdf";

var extensions = new[] { ".pdf", ".docx", ".xlsx" };
var files = Directory
    .EnumerateFiles(folderPath)
    .Where(f => extensions.Contains(
        Path.GetExtension(f).ToLowerInvariant()))
    .OrderBy(f => Path.GetExtension(f).ToLowerInvariant() == ".pdf"

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using (Watermarker watermarker = new Watermarker(filePath))
{
    string trackingText = $"ID:{recipientId}";

    var watermark = new TextWatermark(trackingText, new Font("Arial", 6))
    {
        ForegroundColor = Color.FromArgb(5, 200, 200, 200),
        HorizontalAlignment = HorizontalAlignment.Right,
        VerticalAlignment = VerticalAlignment.Bottom,
        Opacity = 0.02

GroupDocsGists

if (!File.Exists(logoPath))
{
    return;
}

Directory.CreateDirectory(outputFolder);
int processed = 0, failed = 0;

foreach (var filePath in files)
{

GroupDocsGists

// Extracts data from attachments: file path, metadata, and text from each document.
foreach (ContainerItem item in attachments)
{
    PrintMetadata(item.Metadata);

    try
    {
        using (Parser itemParser = item.OpenParser())
        {
            if (itemParser == null)

GroupDocsGists

Add Digital Signatures to ODT and OTT Files using GroupDocs.Signature for .NET

This gist shows how to add a digital signature to OpenDocument Text (ODT) and OpenDocument Template (OTT) files while keeping their internal structure intact using the GroupDocs.Signature .NET library.

📦 Prerequisites

• .NET environment (e.g., .NET 6.0 or later)
• GroupDocs.Signature for .NET package – install via NuGet (Install-Package GroupDocs.Signature)
• A digital certificate file (.pfx) and optional image for visual representation
• Temporary license key (obtain from GroupDocs temporary license)

GroupDocsGists

using System;
using GroupDocs.Conversion;
using GroupDocs.Conversion.Options.Convert;

namespace JpgToSvgDemo
{
    class Program
    {
        static void Main(string[] args)
        {

GroupDocsGists

using System;
using GroupDocs.Conversion;
using GroupDocs.Conversion.Options.Convert;
using System.Drawing;

namespace SvgToJpgDemo
{
    class Program
    {
        static void Main(string[] args)

GroupDocsGists

using System;
using GroupDocs.Conversion;
using GroupDocs.Conversion.Options.Convert;
using GroupDocs.Conversion.Options.Load;

namespace JsonToXmlDemo
{
    class Program
    {
        static void Main(string[] args)

GroupDocsGists

        private static void AddLockedHeaderWatermark()
        {
            Console.WriteLine("Adding locked header watermark...");

            var loadOptions = new WordProcessingLoadOptions();
            using (var watermarker = new Watermarker(InputFile, loadOptions))
            {
                var watermark = new TextWatermark("Company Confidential", new Font("Arial", 19))
                {
                    VerticalAlignment = VerticalAlignment.Center,

GroupDocsGists

Merge PowerPoint Presentations in Node.js

Want to streamline your merge presentation tasks in Node.js? Below is a friendly, step-by-step guide that uses concise code snippets to show how to combine pptx files effortlessly.

📦 Prerequisites

• Make sure to install the GroupDocs.Merger package.
• You can get started with a free trial of GroupDocs.Merger and utilize a temporary license for unrestricted usage.
• This functionality supports multiple file types, including PPTX and PDF.

🧩 Key Capabilities