Best setting for scanners for scanning documents(TIFF and PDF) [closed]

Question

What are the best settings for scanner in order to scan documents(white & black text) and use them for OCR conversion(for best results) and what are standard settings and specification for PDF and TIFF format ?

Answer 1

For OCR, best scanning settings are:

• 300 dpi resolution for regular text, 400 dpi resolution for particularly small fonts (fine print)
• Black & white for text, greyscale for small fonts, color for pictures
• TIFF format. Group4 is used for black & white (very small file size). If color is needed, use Uncompressed (very large file size).

Some OCR technologies may have special preferences, which may slightly help, but they are usually minor.

Answer 2

For OCR purpose, I would scan a document at 300DPI, B/W or grayscale, and uncompressed TIFF or PNG format.