| Getting Started with LEADTOOLS > Document Imaging Features > PDF > PDF > PDF |
LEADTOOLS PDF support includes PDF, Postscript, and EPS formats, providing capability for loading, saving, viewing, rasterizing, and encoding PDF, Postscript, and EPS files. The Plug-ins integrate seamlessly with the broad imaging functionality of LEADTOOLS toolkits, such as specialized display, color-conversion, image-processing, scanning, annotations, and document clean-up.
PDF has become a widely-adopted standard for reproducing documents over the web. Because of its high precision and accuracy in representing text and pictures along with its "hyper" nature, PDF has become a popular supplement or alternative to HTML and Postscript.
The PDF format was developed by Adobe Corporation to allow users to exchange and view electronic documents in an easy and reliable way, independent of the environment in which these documents were created. A PDF file looks the same on the screen and in print regardless of what kind of machine you are using, or which software package was used to create the file. One major advantage of PDF is that a large document can be compressed sufficiently for quick download, yet will display content as if you were looking at the original (print) source such as a book or magazine.
Postscript is a simple interpretive page description language. Postscript is the language that most advanced laser printers use in order to render electronic information on a printed page. EPS stands for Encapsulated PostScript. An EPS file is a PostScript language program describing the appearance of a single page.
The LEADTOOLS Raster PDF Read has the following import and rasterization capabilities:
Loads PDF 1.4, 1.5, and 1.6 files.
Loads PostScript Language Level 3 files.
Loads EPS files.
Loads the entire document or a specified set of sequential pages.
Controls pixel depth - Valid values are 1,4,8 and 24.
Controls horizontal resolution in dots per inch.
Controls vertical resolution in dots per inch.
Uses fonts installed by the plug-in or system fonts.
Can perform font anti-aliasing - Valid values are 1-bit(no anti-aliasing) , 2-bit and 4-bit.
Can perform graphics anti-aliasing - 1-bit , 2-bit and 4-bit.
The LEADTOOLS Raster PDF Write has the following export capabilities:
Full multi-page write support for the PDF format. You can append, insert, replace or delete a specified page in the generated PDF file.
A wide range of control options for the resulting image data in terms of compression. These include:
No compression, where the image is embedded inside the file without any compression.
Compressed using CCITT Group 3, 1 dimension. For 1-bit images.
Compressed using CCITT Group 3, 2 dimensions. For 1-bit images.
Compressed using CCITT Group 4. For 1-bit images.
JPEG compression and YUV 4:4:4 color space loss-less. Bits per pixel: 8 for grayscale, 24 for color.
JPEG compression and YUV 4:2:2 color space. Bits per pixel: 8 for grayscale, 24 for color.
JPEG compression and YUV 4:1:1 color space. Bits per pixel: 8 for grayscale, 24 for color.
JBIG2 compression. Bits per pixel: 1.
Encryption/Decryption
RC4 40-bit key encryption.
RC4 128-bit key encryption.
Support for User password, Owner password permissions.
Control over the type of encoding to be used in order to change compressed image data into a text encoded format. The text encoding techniques include:
None.
Use ASCII 85 text encoding algorithm.
Use ASCII HEX text encoding technique.
The LEADTOOLS PDF also has the following capabilities:
PDF Information Extraction
Extract text (full information)
Extract hyperlinks
Extract internal links
Extract bookmarks
PDF Manipulation
Merge different PDF files into one file
Extract pages from any PDF
Convert to PDF/A
Linearize PDF files
Set or create PDF document information
Encrypt PDF files
Decrypt PDF files
Convert PDF files from one version to another
PDF Editing
Add pages to existing PDF files
Replace pages in existing PDF files
Delete pages from existing PDF files
Write PDF bookmarks
Postscript File Distiller
Convert Postscript files into PDF files
Supported Platforms