|  Aspose.Pdf for .NET lets you create new and manipulate existing PDF documents. With the Aspose.Pdf API you can transform image, XML, XSL-FO, HTML, SVG or simple text files into PDF files. You can specify XMP metadata, author details, creator details, and title information during PDF generation. The product allows you to generate PDF/A-1a or PDF/A-1b documents.
Aspose.Pdf for .NET is features rich and lets you specify different bookmark levels for different headings in a document. You can set the compression level of the document, default document open action (fit to page or fit box), document open mode or even the appearance to thumbnails or bookmarks. You can further set page orientation from portrait to landscape and define the document zoom factor. To control how the file displays you can specify different page transition effects such as dissolve or box. Aspose.Pdf is a good choice when you need to edit or manipulate existing PDF documents. It allows you to concatenate or merge two or more PDF documents, append new pages to an existing PDF file, extract pages, insert pages at a particular location in an existing PDF file, split one PDF into two or more PDF documents or create N-up's (number of pages over single page) and booklets. With this robust product, you get the capability to transform each page of a PDF file into conventional image formats such as BMP, JPEG, PNG, GIF or transform it into multipage TIFF. You can also add XMP metadata information such as CreateDate, CreatorTool, ModifyDate and MetaDataDate to PDF documents or change existing meta information like title, author name, header, keywords, subject etc.
Section and Paragraph Features 
Aspose.Pdf for .NET allows you to specify page size and the page margin size of each section within a document. Page background images for each section, page header and footer sections can also be set. Unique ID's can be assigned to each section of the document and Aspose.Pdf for .NET facilitates the addition of multiple paragraphs to a each and every section of the document. You can also specify the exact margin of each paragraph. Other options include: create, update or delete bookmarks, create or delete file attachments and annotations, add floating box with absolute positioning rather than flow layout and much more.
Text Features 
With Aspose.Pdf for .NET, you can apply text alignment, that is right, left, center, justify or full justify, place contents in right-to-left languages such as Arabic, Hebrew and Urdu, create left hanging text paragraphs, preserve white space in text, set custom tab stops and define text formatting for all segments of a document including changing text to underline, overline or strikeout.
Along with the ability to specify horizontal alignment of text, you can also specify vertical alignment of text segments such as baseline or topline. Text foreground and background colors can be changed, use replaceable symbols which allow you to change the corresponding text content at runtime. Support for PostScript Type1, TrueType and other PDF core fonts is available in Aspose.Pdf for .NET.
This product is great when it comes to text extraction, text replacement and insertion of new text inside an existing PDF document.
Graph and Imaging Capabilities  Aspose.Pdf for .NET provides support for many different types of graphs: graphs can be drawn on any page location specified by coordinates and existing graphs can be rotated and scaled to suit your requirements.
You may also try converting images residing over disk, memory or web location into PDF format. Along with conventional image types, CCITT (fax) images, multi-page TIFF images and transparent GIF images are also supported.
Place image in its original size of specify custom dimensions and place it inside main document section, inside a table cell or in the header or footer sections. Aspose.Pdf for .NET also allows you to add, replace, extract or delete images already present in a PDF document. You may also add images as watermark when generating a new PDF document or place one in an existing file.
Table Features  Aspose.Pdf for .NET allows you to add tables to PDF documents, where you can specify the table border style, margin and padding information, column widths and spanning options, control row splitting attributes, create nested tables, clone table objects or simply import data from an object array, data table or data view.
Default cell formatting can be applied to entire table cells, create individual rows and columns, add repeating rows or create nested tables. Tables can be placed inside the main PDF document or inside the header and footer sections. Now you can open an existing PDF document and get hold of table already present inside it (to add, update or delete table items).
Hyperlink and Attachments Features  Aspose.Pdf for .NET allows you to add hyperlinks pointing to other pages within same PDF, hyperlinks to pages in other PDF documents, hyperlinks to non-PDF files or you may add hyperlinks towards any web location. Along with hyperlink creation, get the capabilities to extract hyperlinks from a PDF document.
Get the power to add, update, import, export or delete attachments and annotations. Files of any type can be attached to a PDF document and annotation types such as polygon, polyline, pop-up, rubber stamp, caret, free text and many more can be added. You may also specify icon type, coordinates and opacity values.
Form Field Features 
Aspose.Pdf for .NET provides advanced features for form fields processing. With this single product, you get the capabilities to add form fields to the PDF document or you can programmatically more, rename, remove and copy form fields across the PDF documents, set JavaScript for push button and flatten form fields. This product is also great when it comes to specifying field attributes such as READ_ONLY, REQUIRED, NO_EXPORT, HIDDEN, NOZOOM or you can easily specify visual attributes such as field Alignment, BorderStyle, ButtonStyle, FontSize, TextColor, TextEncoding or define custom positioning to place form fields at absolute position within document. Import or export form fields data from XML, FDF or XFDF files or you can bind form fields with OLEDB or ODBCDB data source. You can also import an image or barcode, get field data with rich text formatting or add submit button to post data to a specified URL.
Security Features 
Aspose.Pdf for .NET offers the facility to encrypt and decrypt PDF documents with either 40-bit,128-bit or 256-bit encryption and also specify user passwords for further PDF security. Content modification in PDF documents such as copying content, printing the file, completing form fields, degraded printing, annotation modification as well as PDF document assembly can also be restricted. Aspose.Pdf for .NET allows you to further improve PDF security mechanism by using PKCS#1, PKCS#7 and PKCS#7 detached signature types and with the use of digital certificate. You may also specify the certificate level and set the graphical appearance of the signature.
PDF Viewer  Aspose.Pdf for .NET offers an advanced PDF Viewer which can be embedded into your applications to enable printing of PDF files. You can also enhance details by zooming in and out of the PDF content. More along, it also provides the leverage of setting the page size, specify detailed printer settings, print large PDF files and also you and adjust the resolution value for viewing and printing.
No Adobe Acrobat Automation  Aspose.Pdf for .NET is a robust and flexible component and quite easy to use as compared to Adobe Acrobat Automation. Aspose.Pdf for .NET is built using managed code and can be installed and deployed as a single .NET assembly, whereas Adobe Acrobat Automation is based upon COM components which require to be registered on the machine where they are being used. Aspose.Pdf for .NET is fully supported on 32-bit and 64-bit machines and is quite fast compared to Adobe Acrobat Automation.
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