ebook-convert changes width of pdf pdf-odd-even-offset and pdf-add-toc used both

Lafisrap · 08-30-2020, 07:27 AM

Executing

Code:

echo "# This is a test" > test.md
ebook-convert test.md test.pdf --custom-size 4.724x7.48 --pdf-odd-even-offset 10
--pdf-add-toc --level1-toc //h:h1

results in a test.pdf having a width of 4.54.

Code:

ebook-convert test.md test.pdf --custom-size 4.724x7.48 --pdf-odd-even-offset 0
--pdf-add-toc --level1-toc //h:h1

or

Code:

ebook-convert test.md test.pdf --custom-size 4.724x7.48 --pdf-odd-even-offset 10

results in a with of 4.71.

Not exact though, but very much closer to the specified width.

1. First is a bug I guess.
2. Question: Why can't it be exact? (I need this to upload a book to bod.de)

kovidgoyal · 08-30-2020, 12:27 PM

1. odd-even offsets are implemented by adding to margins, so subtract that size from the custom size you specify. calibre could of course do so itself, and probably should, open a bug report for it.

2. No clue, calibre simply passes page size to chromium, the rest is up to it

kovidgoyal · 08-30-2020, 12:43 PM

Actually regarding (2), this will make it a bit better https://github.com/kovidgoyal/calibr...c26188df85ed33

however you will never get exact sizes unles syou specify the sizes in pts, as that is the unit used by PDF.

kovidgoyal · 08-31-2020, 12:57 AM

And I looked at 1 as well. I was misremembering. It does not change page sizes, it changes the crop box on each page.

Lafisrap · 09-04-2020, 07:43 AM

Quote:

Originally Posted by kovidgoyal

Actually regarding (2), this will make it a bit better https://github.com/kovidgoyal/calibr...c26188df85ed33

Thanks a lot!

Quote:

Originally Posted by kovidgoyal

however you will never get exact sizes unles syou specify the sizes in pts, as that is the unit used by PDF.

I will change this in my app ...

08-30-2020, 07:27 AM	#1
Lafisrap Junior Member Posts: 5 Karma: 10 Join Date: Jul 2020 Device: Kindle Reader	ebook-convert changes width of pdf pdf-odd-even-offset and pdf-add-toc used both Executing Code: echo "# This is a test" > test.md ebook-convert test.md test.pdf --custom-size 4.724x7.48 --pdf-odd-even-offset 10 --pdf-add-toc --level1-toc //h:h1 results in a test.pdf having a width of 4.54. Code: ebook-convert test.md test.pdf --custom-size 4.724x7.48 --pdf-odd-even-offset 0 --pdf-add-toc --level1-toc //h:h1 or Code: ebook-convert test.md test.pdf --custom-size 4.724x7.48 --pdf-odd-even-offset 10 results in a with of 4.71. Not exact though, but very much closer to the specified width. 1. First is a bug I guess. 2. Question: Why can't it be exact? (I need this to upload a book to bod.de)

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08-30-2020, 12:27 PM	#2
kovidgoyal creator of calibre Posts: 45,616 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	1. odd-even offsets are implemented by adding to margins, so subtract that size from the custom size you specify. calibre could of course do so itself, and probably should, open a bug report for it. 2. No clue, calibre simply passes page size to chromium, the rest is up to it

08-30-2020, 12:43 PM	#3
kovidgoyal creator of calibre Posts: 45,616 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Actually regarding (2), this will make it a bit better https://github.com/kovidgoyal/calibr...c26188df85ed33 however you will never get exact sizes unles syou specify the sizes in pts, as that is the unit used by PDF.

08-31-2020, 12:57 AM	#4
kovidgoyal creator of calibre Posts: 45,616 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	And I looked at 1 as well. I was misremembering. It does not change page sizes, it changes the crop box on each page.

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