Install-Package FreeSpire.Presentation

using System;
using Spire.Presentation;

namespace PptToHtmlConverter
{
    class Program
    {
        static void Main(string[] args)
        {
            // 定義源PPT路徑和目標(biāo)HTML路徑
            string pptFilePath = @"D:\Demo.pptx";
            string htmlFilePath = @"D:\output.html";

            try
            {
                // 1. 創(chuàng)建Presentation實(shí)例，加載PPT文件
                using (Presentation presentation = new Presentation())
                {
                    presentation.LoadFromFile(pptFilePath);

                    // 2. 轉(zhuǎn)換為HTML（核心方法）
                    // FileFormat.Html指定輸出格式為HTML
                    presentation.SaveToFile(htmlFilePath, FileFormat.Html);
                }

                Console.WriteLine("PPT轉(zhuǎn)換HTML成功！輸出路徑：" + htmlFilePath);
            }
            catch (Exception ex)
            {
                Console.WriteLine("轉(zhuǎn)換失?。? + ex.Message);
            }
        }
    }
}

using System;
using Spire.Presentation;

namespace ConvertPowerPointSlideToHtml
{
    class Program
    {
        static void Main(string[] args)
        {
            // 源PPT路徑和目標(biāo)HTML路徑
            string pptFilePath = @"D:\Demo.pptx";
            string htmlFilePath = @"D:\slide.html";

            try
            {
                // 使用using語(yǔ)句自動(dòng)釋放Presentation資源，避免內(nèi)存泄漏
                using (Presentation presentation = new Presentation())
                {
                    // 加載PPT文件
                    presentation.LoadFromFile(pptFilePath);

                    // 獲取指定幻燈片（索引從0開(kāi)始，[0]代表第1頁(yè)，[1]代表第2頁(yè)，以此類(lèi)推）
                    ISlide targetSlide = presentation.Slides[0];

                    // 將指定幻燈片單獨(dú)保存為HTML格式
                    targetSlide.SaveToFile(htmlFilePath, FileFormat.Html);

                    Console.WriteLine("指定幻燈片轉(zhuǎn)換HTML成功！輸出路徑：" + htmlFilePath);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("轉(zhuǎn)換失?。? + ex.Message);
            }
        }
    }
}

using System;
using System.IO;
using Spire.Presentation;

namespace PptToHtmlConverter
{
    class BatchConverter
    {
        static void Main(string[] args)
        {
            // 源PPT目錄和目標(biāo)HTML目錄
            string pptDirectory = @"D:\PPTs";
            string htmlDirectory = @"D:\HTMLs";

            // 確保目標(biāo)目錄存在
            if (!Directory.Exists(htmlDirectory))
            {
                Directory.CreateDirectory(htmlDirectory);
            }

            // 獲取目錄下所有PPT/PPTX文件
            string[] pptFiles = Directory.GetFiles(pptDirectory, "*", SearchOption.TopDirectoryOnly)
                                         .Where(f => f.EndsWith(".ppt") || f.EndsWith(".pptx"))
                                         .ToArray();

            foreach (string pptFile in pptFiles)
            {
                try
                {
                    // 生成目標(biāo)HTML文件名（與PPT同名）
                    string fileName = Path.GetFileNameWithoutExtension(pptFile);
                    string htmlFile = Path.Combine(htmlDirectory, $"{fileName}.html");

                    using (Presentation presentation = new Presentation())
                    {
                        presentation.LoadFromFile(pptFile);
                        presentation.SaveToFile(htmlFile, FileFormat.Html);
                    }

                    Console.WriteLine($"成功轉(zhuǎn)換：{pptFile} → {htmlFile}");
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"轉(zhuǎn)換失敗 {pptFile}：{ex.Message}");
                }
            }

            Console.WriteLine("批量轉(zhuǎn)換完成！");
        }
    }
}