With LEADTOOLS PDF SDK technology, .NET, WPF, Silverlight, ASP.NET and C/C++ developers can add advanced PDF and PDF/A functionality to 32 and 64 bit single and multi-threaded applications. LEADTOOLS supports both image and text searchable PDF file types.
LEADTOOLS supports creating PDF files with a rich set of options including different versions (1.2, 1.4 and 1.5), PDF/A, 40 and 128-bit encryption, font properties, bookmarks and embedding LEADTOOLS annotations to the final output document.
What do you want to do with PDF and PDF/A?
Explanation of PDF File Types
In general, PDF and PDF/A files can be categorized into two basic types: raster image and searchable text based. Raster image based PDF files are basically images in a PDF wrapper. These types of PDF files offer the advantage of being more difficult to edit than text based PDFs and have the exact same appearance as the original image. On the other hand, searchable text based PDF files offer capabilities such as search and edit, and are typically smaller in size.
When converting from raster images to searchable text based PDF, LEADTOOLS can save a hybrid type of PDF that is a searchable text based PDF but maintains the exact appearance of the original raster image. These types of PDF files are called image over text. In image over text PDFs, the text is formatted as usual, but the portion of the original raster image for each character is overlaid on top of the text. This maintains the look and formatting of the original raster image while still allowing the text content to be searched, selected, copied and pasted.
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