Willus.com's K2pdfopt Help Page

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Getting Started:

	1.	Windows Text Menu (now with video!)
	2.	Linux Ubuntu Env vars
	3.	Mac OSX
	4.	k2pdfopt Guide (WIP)
	5.	Help in other languages

FAQ | Forum
Customizing K2PDFOPT:

	1.	K2pdfopt GUIs
	2.	Disabling the Windows GUI
	3.	The interactive menu
	4.	List of command-line options
	5.	Using a shortcut (now with video!)
	6.	Using the K2PDFOPT environment variable
	7.	Using the command line

Adjusting the output:

	1.	Screen Size
	2.	Increasing the magnification
	3.	Landscape mode
	4.	Output File Size
	5.	Setting Margins
	6.	Color Output
	7.	Uneven Line Breaks/ Excess Margins

Processing Options:

	1.	Showing Markings
	2.	OCR
	3.	Native PDF (now with video!)
	4.	Auto-Straightening
	5.	Ignoring Borders/ Headers/Footers
	6.	Detecting Columns
	7.	Protecting Regions
	8.	Column Order
	9.	Right-to-Left Page Scanning
	10.	Using Ghostscript

AUTO-STRAIGHTENING
Here we have an example where I intentionally skewed the scanned pages of a book to demonstrate the auto-straightening option (-as) with k2pdfopt. This example needs more than just auto-straightening, though, it also needs the -m option (see ignoring borders) and the -col option to force only two columns to be detected, otherwise the wide spacing of the words fools k2pdfopt into thinking there are sub-columns in some places. Note that the page is so tilted that I couldn't just put -as, since it defaults to a max of 4 degrees of correction. I had to specify up to 5 degrees of correction (-as 5).

Original File		Default Conversion -- the page is too tilted, so k2pdfopt can't isolate any columns or rows of text.		Using -as 5 -m 0.5 -col 2. K2pdfopt now can isolate the columns.
Window GUI auto-straighten checkbox

In the text menu versions of k2pdfopt (OSX and Linux), you can also select (a) Auto-straighten from the k2pdfopt interactive settings menu.

This page last modified
Sunday, 12-Feb-2023 12:43:23 MST