pdf-Ubuntu
Table of Contents
1 PDF
1.1 PDF viewer
Okular
1.2 combine pdf
keywords: merge
To merge two pdf files, file1.pdf and file2.pdf:
pdftk file1.pdf file2.pdf cat output mergedfile.pdf
1.3 extract a page from a pdf file
method1:
- print the current page
method 2:
use pdftk package
pdftk full-pages.pdf cat 1 output outfile_1.pdf
| full-pages.pdf | input file |
| cat 1 | page 1 |
1.4 pdf2png – pdftoppm
pdftoppm input.pdf outputname -png
This will output each page in the PDF using the format outputname-01.png, with 01 being the index of the page. Converting a single page of the PDF
pdftoppm input.pdf outputname -png -f {page} -singlefile
Change {page} to the page number. It's indexed at 1, so -f 1 would be the first page.
Specifying the converted image's resolution
The default resolution for this command is 150 DPI. Increasing it will result in both a larger file size and more detail.
To increase the resolution of the converted PDF, add the options -rx {resolution} and -ry {resolution}. For example:
pdftoppm input.pdf outputname -png -rx 300 -ry 300
https://askubuntu.com/questions/50170/how-to-convert-pdf-to-image/50180#50180
