TIFF（标记图像文件格式）是一种灵活的文件格式，用于存储图像，包括照片和艺术图像。它受到图像处理应用程序、出版和页面布局应用程序以及扫描、传真、文字处理应用程序等的广泛支持。它可以是一个包含压缩（有损）JPEG 和（无损）PackBits 压缩图像的容器。以无损格式存储图像数据的能力使 TIFF 文件成为有用的图像存档。因此，有时开发人员需要将其他格式（如 word）的文档转换为 TIFF 格式。

Spire.Doc for.NET 最新下载

Spire.Doc，一个强大的 .NET word 组件，使开发人员能够轻松地将文件从 word 转换为 TIFF。本文将向您介绍使用Spire.Doc将word转换为TIFF的解决方案。

注意：请先下载最新版本的Spire.Doc for .NET（或Spire.Office）在bin文件夹中添加.dll作为Visual Studio的参考。

示例word文件：

请按照以下详细步骤操作：

第 1 步：创建一个新的文档实例并从文件中加载一个 word 文档。

Document document = new Document(@"E:\Program Files\testing.docx");

第 2 步：使用 document.SaveToImages() 方法将 word 文档保存为 Image 数组。

private static Image[] SaveAsImage(Document document)
{
Image[] images = document.SaveToImages(ImageType.Bitmap);
return images;
}

第 3 步：使用JoinTiffImages()方法将word pages中的图片保存为tiff图片类型，指定encoder和image-encoder参数。

public static void JoinTiffImages(Image[] images, string outFile, EncoderValue compressEncoder)
{
//use the save encoder
System.Drawing.Imaging.Encoder enc = System.Drawing.Imaging.Encoder.SaveFlag;
EncoderParameters ep = new EncoderParameters(2);
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.MultiFrame);
ep.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)compressEncoder);
Image pages = images[0];
int frame = 0;
ImageCodecInfo info = GetEncoderInfo("image/tiff");
foreach (Image img in images)
{
if (frame == 0)
{
pages = img;
//save the first frame
pages.Save(outFile, info, ep);
}
else
{
//save the intermediate frames
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.FrameDimensionPage);
pages.SaveAdd(img, ep);
}
if (frame == images.Length - 1)
{
//flush and close.
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.Flush);
pages.SaveAdd(ep);
}
frame++;
}
}

TIFF文件：

完整代码：

[C＃]

using Spire.Doc;
using Spire.Doc.Documents;
using System;
using System.Drawing;
using System.Drawing.Imaging;

namespace convert_word_to_tiff
{
class Program
{
static void Main(string[] args)
{
Document document = new Document(@"E:\Program Files\testing.docx");
JoinTiffImages(SaveAsImage(document),"6056result.tiff",EncoderValue.CompressionLZW);
System.Diagnostics.Process.Start("6056result.tiff");
}
private static Image[] SaveAsImage(Document document)
{
Image[] images = document.SaveToImages(ImageType.Bitmap);
return images;
}

private static ImageCodecInfo GetEncoderInfo(string mimeType)
{
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
for (int j = 0; j < encoders.Length; j++)
{
if (encoders[j].MimeType == mimeType)
return encoders[j];
}
throw new Exception(mimeType + " mime type not found in ImageCodecInfo");
}

public static void JoinTiffImages(Image[] images, string outFile, EncoderValue compressEncoder)
{
//use the save encoder
System.Drawing.Imaging.Encoder enc = System.Drawing.Imaging.Encoder.SaveFlag;
EncoderParameters ep = new EncoderParameters(2);
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.MultiFrame);
ep.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)compressEncoder);
Image pages = images[0];
int frame = 0;
ImageCodecInfo info = GetEncoderInfo("image/tiff");
foreach (Image img in images)
{
if (frame == 0)
{
pages = img;
//save the first frame
pages.Save(outFile, info, ep);
}

else
{
//save the intermediate frames
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.FrameDimensionPage);

pages.SaveAdd(img, ep);
}
if (frame == images.Length - 1)
{
//flush and close.
ep.Param[0] = new EncoderParameter(enc, (long)EncoderValue.Flush);
pages.SaveAdd(ep);
}
frame++;
}
}
}
}

[VB.NET]

Imports Spire.Doc
Imports Spire.Doc.Documents
Imports System.Drawing
Imports System.Drawing.Imaging

Namespace convert_word_to_tiff
Class Program
Private Shared Sub Main(args As String())
Dim document As New Document("E:\Program Files\testing.docx")
JoinTiffImages(SaveAsImage(document), "6056result.tiff", EncoderValue.CompressionLZW)
System.Diagnostics.Process.Start("6056result.tiff")
End Sub
Private Shared Function SaveAsImage(document As Document) As Image()
Dim images As Image() = document.SaveToImages(ImageType.Bitmap)
Return images
End Function

Private Shared Function GetEncoderInfo(mimeType As String) As ImageCodecInfo
Dim encoders As ImageCodecInfo() = ImageCodecInfo.GetImageEncoders()
For j As Integer = 0 To encoders.Length - 1
If encoders(j).MimeType = mimeType Then
Return encoders(j)
End If
Next
Throw New Exception(mimeType & Convert.ToString(" mime type not found in ImageCodecInfo"))
End Function

Public Shared Sub JoinTiffImages(images As Image(), outFile As String, compressEncoder As EncoderValue)
'use the save encoder
Dim enc As System.Drawing.Imaging.Encoder = System.Drawing.Imaging.Encoder.SaveFlag
Dim ep As New EncoderParameters(2)
ep.Param(0) = New EncoderParameter(enc, CLng(EncoderValue.MultiFrame))
ep.Param(1) = New EncoderParameter(System.Drawing.Imaging.Encoder.Compression, CLng(compressEncoder))
Dim pages As Image = images(0)
Dim frame As Integer = 0
Dim info As ImageCodecInfo = GetEncoderInfo("image/tiff")
For Each img As Image In images
If frame = 0 Then
pages = img
'save the first frame
pages.Save(outFile, info, ep)
Else

'save the intermediate frames
ep.Param(0) = New EncoderParameter(enc, CLng(EncoderValue.FrameDimensionPage))

pages.SaveAdd(img, ep)
End If
If frame = images.Length - 1 Then
'flush and close.
ep.Param(0) = New EncoderParameter(enc, CLng(EncoderValue.Flush))
pages.SaveAdd(ep)
End If
frame += 1
Next
End Sub
End Class
End Namespace

Spire.Doc 可以将 Word 转换为大多数流行的文件格式。它可以将Word转换为PDF、HTML、XML、RTF、Text、ePub等。

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