Spire.PDF for .NET

Spire.PDF for .NET is a professional PDF component applied to creating, writing, editing, handling and reading PDF files without any external dependencies within .NET application. Using this .NET PDF library, you can implement rich capabilities to create PDF files from scratch or process existing PDF documents entirely through C#/VB.NET without installing Adobe Acrobat.

Many rich features can be supported by the .NET PDF API, such as security setting (including digital signature), PDF text/attachment/image extract, PDF merge/split, metadata update, section, graph/image drawing and inserting, table creation and processing and importing data etc. Besides, Spire.PDF for .NET can be applied to easily converting Text, Image and HTML to PDF with C#/VB.NET in high quality.

Key Features:

• High Fidelity Pdf file Conversion: Spire.PDF for .NET supports converting HTML, RTF, XPS, Text and Image to PDF documents with efficient performance. Developers can transform PDF to Word, XPS, SVG, EMF, JPG, PNG, BMP, TIFF, Text format. Furthermore, along with Spire.Doc for .NET and Spire.XLS for .NET, developers can convert Word (Doc/Docx), Excel (Xls/Xlsx) and XML to PDF.
  
• Easily Manipulate document and Form fields: Spire.PDF for .NET offers the facility to merge/split PDF documents and overlay documents. That is to say, users can overlay pages from different PDF documents one over another. Meanwhile, Spire.PDF for .NET can provide import and stamp feature, booklet feature and form filling which can help users read value from form fields and populate a database.
  
• Security features: Spire.PDF for .NET can protect PDF documents by setting passwords and digital signature. User password and owner password can determine the encrypted PDF documents readability, modifiability, printability and other selective restrictions. Meanwhile, digital signature, as a more effective method, can be applied to safeguard and authenticate PDF documents.
  
• Extract data from Pdf documents: Spire.PDF for .NET can be used to extract images, text, pages and attachments from a PDF document with great speed and accuracy.
  
• Document Settings features: Document information can be set with Spire.PDF for .NET including custom metadata, document properties, page orientation and page size. Wherein, document properties consist of document restrictions (printing, document assembly, page extraction, comment etc. allowed or not) and document description about file title, author, subject, keywords and so on. By using Spire.PDF for.NET, viewer preferences can be set with position, title display, resize, page mode and print scaling etc.