Portable Document Format (PDF)

Portable Document Format (PDF). PDF was developed by the Adobe Corporation to allow the exchange and viewing of electronic documents easily and reliably, independent of the environment in which they were created. This format lets you compress large documents to a size small enough to download very quickly. It is also becoming a powerful format for reproducing documents over the web.

LEAD supports versions 1.2, 1.3, and 1.4 of this format. LEAD also supports loading and saving multi-page files in this format.

This filter can also save large images by setting the ESO_PDF_SAVE_LOW_MEMORY_USAGE flag. It can also load files that are stored in memory (memory files). In addition, this filter can load JBIG2 compressed PDF files. It can both load and save PDF files that are JPEG, LZW, CCITT G1 1D, CCITT G3 2D, or CCITT G4 compressed, or are uncompressed.

Support for this file format can be unlocked using one of the following support constants: L_KEY_PDF, L_KEY_PDF_SAVE, L_KEY_OCR_PDF_OUTPUT, L_KEY_BARCODES_PDF_READ, or L_KEY_BARCODES_PDF_WRITE.

The PDF Filter loads AI (Adobe Illustrator) files from version 7 to version 10, which only have PDF data.

The file constants associated with this file format are:

FILE_RAS_PDF

FILE_RAS_PDF_G3_1D

FILE_RAS_PDF_G3_2D

FILE_RAS_PDF_G4

FILE_RAS_PDF_LZW

FILE_RAS_PDF_JPEG

FILE_RAS_PDF_JPEG_422

FILE_RAS_PDF_JPEG_411

Required DLL: LFPDFU.DLL. This DLL requires PDFDLL32.DLL

For a PDF file, you can read the following bits per pixel, using various DPI options: 1, 2, 4, 8, 24.

For a PDF file, you can write the following bits per pixel: 1, 2, 4, 8, 24.