水印

C# 將 WebP 圖像轉換為 JPG、PNG、TIFF 和 PDF | .NET WebP 轉換器

如何在 C# 中將 WebP 轉換為 JPG、PNG、TIFF 或 PDF。使用開源 .NET 轉換 API。工作示例也可在 GroupDocs GitHub 存儲庫中獲得。...小、更改伽馬、對比度和亮度，並為轉換後的 JPG 圖像添加水印。以下是主題的快速鏈接：在 C# 中將 WebP 轉換為...、伽瑪值；甚至將水印應用於轉換後的圖像。將 WebP 圖片轉換為 JPG：對比度 - 翻轉 - 水印 - 亮度 - 調整大小...

blog.groupdocs.com/zh-hant/conversion/convert-w...

more..
Unlock PDF in CSharp

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....之前我们讨论了[在文档中添加文本和图像水印][1] 以避免和非法使用。在本文中，我们将看到如何为 PDF...

blog.groupdocs.com/zh/tag/unlock-pdf-in-csharp/

more..
Change PDF Password in CSharp

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....之前我们讨论了[在文档中添加文本和图像水印][1] 以避免和非法使用。在本文中，我们将看到如何为 PDF...

blog.groupdocs.com/zh/tag/change-pdf-password-i...

more..
Protect PPT Java

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以使用水印、加密文件或对其进行密码保护。在本文中，我们将学习如何向 PowerPoint...

blog.groupdocs.com/zh/tag/protect-ppt-java/

more..
Protect PDF CSharp

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以使用水印、加密文件或对其进行密码保护。在本文中，我们将学习如何为 PDF...

blog.groupdocs.com/zh/tag/protect-pdf-csharp/

more..
Protect PDF Java

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以使用水印、加密文件或對其進行密碼保護。在本文中，我們將學習如何為 PDF...

blog.groupdocs.com/zh-hant/tag/protect-pdf-java/

more..
Protect PDF Online

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以使用水印、加密文件或對其進行密碼保護。在本文中，我們將學習如何為 PDF...

blog.groupdocs.com/zh-hant/tag/protect-pdf-online/

more..
Protect Word Online

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以使用水印、加密文件或对其进行密码保护。在本文中，我们将学习如何向 Word...

blog.groupdocs.com/zh/tag/protect-word-online/

more..
Add Password to PDF

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以使用水印、加密文件或对其进行密码保护。在本文中，我们将学习如何为 PDF...

blog.groupdocs.com/zh/tag/add-password-to-pdf/

more..
Password Protect Document

Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....您可以应用水印、加密文件，也可以使您的文档受密码保护。在本文中，我们将了解...

blog.groupdocs.com/zh/tag/password-protect-docu...

more..