Category
C#/VB.NET: Insert, Replace or Delete Images in PDF
2023-08-30 06:35:25
Compared with text-only documents, documents containing images are undoubtedly more vivid and engaging to readers. When generating or editing a PDF document, you may sometimes need to insert images to improve its appearance and make it more appealing. In this article, you will learn how to insert, replace or delete images in PDF documents in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Add Image Watermarks to PDF
2023-08-24 09:06:40
An image watermark is usually a logo or sign that appears on the background of digital documents, indicating the copyright owner of the content. Watermarking your PDF document with an image can prevent your data from being reused or modified. This article demonstrates how to add an image watermark to PDF in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Add Text Watermarks to PDF
2023-08-24 08:54:04
To prevent your PDF document from being used in an unauthorized manner, you can watermark the document with text or an image. In this article, you will learn how to programmatically add text watermarks (single-line and multi-line watermarks) to PDF in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Extract Tables from PDF
2023-08-24 08:35:23
PDF is one of the most popular document formats for sharing and writing data. You may encounter the situation where you need to extract data from PDF documents, especially the data in tables. For example, there is useful information stored in the tables of your PDF invoices and you want to extract the data for further analysis or calculation. This article demonstrates how to extract data out of PDF tables and save it in a TXT file by using Spire.PDF for .NET.
C#/VB.NET: Create Tables in PDF
2023-08-24 08:21:10
A table provides fast and efficient access to data displayed in rows and columns in a visually appealing manner. When presented in a table, data has a greater impact than when just used as words and enables readers to easily compare and understand relationships between them. In this article, you will learn how to create a table in PDF in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Add Page Numbers to Existing PDF Documents
2023-08-18 05:41:42
Page numbers are essential for both electronic and paper documents. They make it easier for readers to find and access specific parts of a document quickly without having to browse page by page. In this article, you will learn how to add page numbers to Existing PDF documents in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Delete Pages from PDF
2023-08-18 03:07:48
A PDF document can contain multiple pages with different text content, images, or other objects. Occasionally, users may need to delete certain pages with incorrectly drawn objects or pages that are irrelevant to the topic of the document. This article will demonstrate how to programmatically delete/remove pages from an existing PDF document using Spire.PDF for .NET.
C#/VB.NET: Add Background Color or Background Image to PDF
2023-08-18 03:02:39
In a PDF document, the background refers to the overall visual appearance behind the content of the pages. The background can be a simple solid color or an image of your choice. Adding backgrounds to PDFs can help you add visual interest to your documents and also enhance readability. In this article, you will learn how to programmatically set the background color or image for PDF using Spire.PDF for .NET.