k2pdfopt: optimizes PDFs for viewing on e-readers

[Markus1]

It doesn't work

[stillstill]

Do we have any option to remove empty lines between paragraphs? These days I found more and more oddly formatted literature... Like no idents for new paragraphs but there are empty lines between each paragraph.

[willus]

Originally Posted by Markus1

It doesn't work. Empty areas remain

Did you look at the PDF output from k2pdfopt on a PDF reader on your PC (e.g. view it in SumatraPDF)? Does it look right on your PC? What reader are you using on the kindle? Is it possibly the kindle reader that is the issue? Can you post your source and converted PDF (just a page or two, at least)?

[willus]

Originally Posted by stillstill

Do we have any option to remove empty lines between paragraphs? These days I found more and more oddly formatted literature... Like no idents for new paragraphs but there are empty lines between each paragraph.

k2pdfopt should remove extra vertical empty space by default when it uses re-flow. What options are you using? Can you post an example of your source document? See these command-line options: -vb, -vls, -vs.

[Kule]

Hello @willus

Thanks for the great app.
I attempted to convert the book with symbols between paragraphs
(4 pages attached- original.pdf).

Below are the commands I used (I use terminal version on MacOS):

-mode def -ws 0.200 -ac 0.3 -dpi 300 -wrap+ -fs 14 -dev kbh2ofs -a- -ui- -x -om 0.8cm -nt -90 -fc- -y -x

The result is almost good (result_k2opt.pdf attached), but I am unable to remove these symbols . (original for removal.pdf attached) attached.

As a result, the text around these symbols is not in order (I have marked in red, and the original order is highlighted in yellow).
This only happens around symbols, nowhere else.

The symbol confuses the conversion and should be removed beforehand.
Could you help?


Thanks in advance

[willus]

Originally Posted by Kule

As a result, the text around these symbols is not in order (I have marked in red, and the original order is highlighted in yellow).
This only happens around symbols, nowhere else.

The symbol confuses the conversion and should be removed beforehand.
Could you help?

Sorry for the delayed response. Just force k2pdfopt to evaluate this as a single column by adding this to your options: -col 1

I think that will do what you want.

[Kule]

Thanks, it works, the text order is fully preserved.

[Shohreh]

Hello,

I have a couple of questions:
1. What's the right way to remove a header that extends to 47pt? -mt 47p didn't work — for some reason, it's displayed at the bottom of the page

2. Is there a way to get k2pdfopt to move footnotes at the bottom of the page?

Here's the command I used:

k2pdfopt.exe -o test.header.pdf -p 13-20 -mt 47p -mode fw -ls- -om 0.2 -w 758 -h 1024 -dpi 213 -fc- input.pdf

Thank you.

--
Edit: And since footnotes obviously have a different height depending on the amount of text, I can't simply grab that section and move footnotes like Abbyy tries to do — sometimes successfully, sometimes not; Regardless, it moves them at the end of the chapter while I'd rather keep them in the page, for easier reading.

Does a PDF wizard know if it's possible to 1) search for all paragraphs that start with a exponented/superscript number and 2) cut those and paste them at the bottom of the page?

[willus]

Originally Posted by Shohreh

1. What's the right way to remove a header that extends to 47pt? -mt 47p didn't work — for some reason, it's displayed at the bottom of the page

First question s/b easy--convert points to inches. 47/72=0.653 in, so -mt 0.653. The "p" is used for pixels, not points. See the "-h" option here. Let me think about on the other issue. I think maybe the best option is to use the -bp option? That will start a new output page for each new input page...? I don't really have any intelligence in k2pdfopt to be able to separate out footnotes and place them differently.

[Shohreh]

Thanks. That did the trick to remove headers.

As for keeping footnotes at the bottom: When running pymupdf, I notice they are displayed in a smaller font size, possibly starting with a superscript (but not always: In this book, some footnotes start with a star followed by a superscript), so that would be a "simple" way to grab everything down to the end of the page, or move them all to the end of the chapter/book like Abbyy does and just include hyperlinks so the user can easily go back and forth.

blocks = page.get_text("dict", flags=11)["blocks"]
for b in blocks:  # iterate through the text blocks
	for l in b["lines"]:  # iterate through the text lines
		stuff = ""
		for s in l["spans"]:  # iterate through the text spans
			print("")
			#4.8 = 4.800000190734863
			if round(s["size"],1) == 4.8:
				print("Found footnote", s["text"])
			stuff += s["text"]
			print(stuff)

[stillstill]

Originally Posted by stillstill

Thank you for both methods. Both of them perfectly eliminated horizontal line and likely in this way helped to workaround the small font issue (the line presence alone in the output was not an issue). The sudden alignment change still remained. Text alignment changed from "justified" to "left aligned" for the entire source page where there at the end is that horizontal line. Sometimes it affects not the entire source page but the chapter on the page before horizontal line. This remediated effectively by "-j +" which worked flawlessly.

Thank you so much for your really brilliant Application development and such a dedication to the support.

Unfortunately it doesn't work with any underlined text. The font gets random sized for each line as the algorithm seems to interpret the underlined parts of text as solid figures and tries to fit the underlined block per line - this renders to wildly variating font size. Is that also possible to correct?

Thank you.