PDF (Portable Document Format) is an open standard for fixed format document exchange. Use this tag to indicate questions involving files in this format and also when software is generating/processing this format. When possible and possible relevant indicate the version of the PDF document (as ...

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52
votes
12answers
39k views

How can I grep in PDF files?

Is there a way to search pdf files using the power of grep, without converting to text first in Ubuntu?
43
votes
6answers
24k views

Split pages in pdf

I have a scanned pdf file which has scanned two pages on one virtual page (page in pdf file). The resolution is with good quality. The problem is I have to zoom when reading and drag from left to the ...
32
votes
7answers
5k views

How do I create a blank PDF from the command line?

I recently needed a single blank PDF page (8.5" x 11" size) and realized that I didn't know how to make one from the command line. Issuing touch blank.pdf produces an empty PDF file. Is there a ...
28
votes
6answers
34k views

convert images to pdf: How to make PDF Pages same size

I did something like convert -page A4 -compress A4 *.png CH00.pdf But the 1st page is much larger than the subsequent pages. This happens even though the image dimensions are similar. These images ...
20
votes
7answers
44k views

How to convert TXT to PDF?

I want to convert .txt files to .pdf. I'm using this: ls | while read ONELINE; do convert -density 400 "$ONELINE" "$(echo "$ONELINE" | sed 's/.txt/.pdf/g')"; done But this produces one "error" -- ...
19
votes
4answers
26k views

View pdf file in terminal

I want to see pdf files available on our cluster rather than copying them into my local machine and than visualize. Please tell me how can i do this.
18
votes
3answers
9k views

How to query pdf page size from the command line?

For scripting I need to get the page dimensions of a PDF file (in mm). pdfinfo just prints it in 'pts', e.g.: Page size: 624 x 312 pts What should I use? Or what unit is 'pts' anyway - in ...
16
votes
4answers
33k views

pdf to jpg without quality loss; gscan2pdf

When I convert a pdf file to bunch of jpg files using convert -quality 100 file.pdf page_%04d.jpg I have appreciable quality loss. However if I do the following, there is no (noticeable) quality ...
16
votes
2answers
10k views

Rotate pdf pages: 90 degree for even pages and -90 degree for odd pages

I was wondering in a pdf file, how to rotate pdf pages: 90 degree for even pages and -90 degree for odd pages? By pdftk, all I know is to rotate a page by pdftk in.pdf cat 1W output out.pdf, and ...
16
votes
4answers
8k views

Is there some sort of PDF to text -converter?

I need PDF files to text so I can search over them in bulk from commandline. Is there some converter for Ubuntu, OBSD or similar distro? Perhaps related post, OCR with ubuntu here.
13
votes
8answers
14k views

Add and edit bookmarks to pdf

By getting metadata from some pdf files with bookmarks by pdftk, I observe the format of bookmarks in pdf metadata. So I am guessing that with pdftk, it is possible to add and edit bookmarks of a pdf ...
12
votes
2answers
9k views

Use convert to grab a specific page from a PDF file?

I know I have done this before, so I'm sure it's possible, I just forget how to do it. There's a way to tell convert to grab a specific page of a PDF, and I'd like to keep the format of that page as ...
11
votes
5answers
12k views

Modifying PDF files

I need to do some basic editing on existing PDF file. I.e. I need to: Add chapters/bookmarks Change some page numbering However I cannot find any tool - GUI or commandline - which would offer this ...
10
votes
7answers
11k views

How can I add a signature .png to a PDF in Linux?

I have a scanned copy of my written signature and I need to apply it to some documents in the signature block. I used to do this on Windows all the time but I now have only Linux. Is this possible? ...
10
votes
4answers
14k views

How to convert a color pdf to black-white?

I'd like to transform a pdf with some coloured text and images in another pdf with only black&white, in order to reduce its dimensions. Moreover, I would like to keep the text as text, without ...
10
votes
6answers
1k views

Are there any full featured pdf readers that integrate comment function?

I'm needing reading some research papers whose formats are almost pdf.However I cannot find a good pdf reader which can make some notes while reading. Currently I use xournal however there seems not ...
10
votes
4answers
3k views

How to preserve bookmarks when rearranging pages of a PDF file with tools like pdftk?

I am using pdftk to rearrange pages of a pdf file with bookmarks/outlines, but after that, the output file lost the bookmarks of the original. My command is pdftk in.pdf cat 1-22 43 23-42 44-end ...
10
votes
1answer
1k views

generate a hyperlinked table of contents and insert into existing PDF

I have an existing PDF (without any corresponding source file), and a text file which is a list of items referencing sections within the PDF file, along with a page number for each item. I would like ...
10
votes
1answer
3k views

How to make ghostscript not wipe PDF metadata

Ghostscript wipes the PDF metadata like author, title, subject etc. How can I tell ghostscript not to touch the metadata? I invoke it as follows: gs \ -dBATCH \ -dNOPAUSE ...
10
votes
1answer
663 views

How do I 'unbook' a pdf

I have a pdf file that was made into a booklet format. It is meant to print on A4 paper in landscape orientation; here are two pages in the pdf, which should correspond to four pages in the actual ...
10
votes
4answers
3k views

Open signed PDFs in Linux

We have some PDF files which are secured by a .pfx certificate. On Windows we can use Adobe Reader to read these PDF files (with previously imported certificate). I've googled for a long time but I ...
9
votes
4answers
10k views

How to know if a pdf file is compressed or not and to (un)compress it

I just learned that pdf files can be compressed to reduce its disk size. I was wondering how to know if a pdf file has already been compressed? What applications/commands can be used to compress or ...
9
votes
2answers
2k views

Discovering metadata about a PDF

Suppose I have a PDF and I want to obtain whatever metadata is available for that PDF. What utility should I use? I find the piece of information I am usually most interested in knowing is the paper ...
9
votes
8answers
688 views

Find duplicate PDF files by content

Some journals generate a different PDF for each download. APS for example stores time and the IP address in the PDF. Or there is a paper version with hyper links and one with text references. How ...
9
votes
4answers
2k views

how to merge pdf files so that each file begins on an odd page number?

I need to merge a few dozed pdfs, and i want all of the input pdfs to start on an odd page in the output pdf. Example: A.pdf has 3 pages, B.pdf has 4 pages. I don't want my output to have 7 pages. ...
9
votes
5answers
3k views

How to merge 2 PDF files with interleaving pages order?

I've got a double-side-printed multipage document to scan with a linear bulk scanner. So, as the result I get 2 PDF files: one containing all odd pages and the second containing all even pages. I need ...
9
votes
1answer
729 views

Split PDF into colour and black/white pages

I would like to automatically split a large PDF document into two files: one file should contain only the pages with black and white content, and the other should contain only the pages with any ...
8
votes
4answers
5k views

Text annotations and image additions to PDF file using free software

I'm mostly interested in annotating a PDF file with text at a predetermined position. GUIs and command line utilities are both Ok, but only free software solutions, please. However, I included image ...
8
votes
3answers
4k views

How to convert a PDF file to a DVD movie?

Each page would be navigable with the player's 'next' button. The result should have a directory called VIDEO_TS, to ensure it will play in old players.
8
votes
2answers
2k views

Is there a way to flatten a .pdf image from the command line?

In GIMP, I can import a .pdf, and use the GUI to flatten it (if it was made with many layers) by selecting "Flatten Image" in the "Image" dropdown menu. I can then export the .pdf with a new filename....
8
votes
1answer
9k views

How do I insert a blank page into a PDF with ghostscript or pdftk?

I have a PDF file that needs a blank page inserted into it every so often. The pattern is unpredictable, so I need a command that will allow me to fit one in wherever necessary. How can i do this?
8
votes
1answer
977 views

Combine multiple PDF files into one (arranged in a matrix)

Having a set of PDF files, lets say: in-01.pdf, in-02.pdf, in-03.pdf, ... I would like to combine all of them into a single one, forming an M x N matrix. The command montage allows for doing so (M ...
8
votes
2answers
1k views

What program will save a fillable PDF?

There are several nice fillable PDFs available for the RPG hobby. These have boxes that number values can be entered and simple formulas are calculated throughout the sheet. I'm finding that the ...
7
votes
3answers
7k views

How can I convert a pdf file from gray-scale to black-white?

My OS is Ubuntu 12.04. How can I convert a pdf file from gray-scale to black-white? The gray-scale pdf file comes from scanning with gray-scale option, and the black-white scale pdf is required by OCR....
7
votes
3answers
9k views

How to convert pdf to eBook format

Is there a way to convert a PDF document into an eBook format such as epub, azw or mobi? I am looking for an application, which is fast in conversion. I have just tried calibre. After 10 minutes not ...
7
votes
3answers
2k views

Is GNU PDF Library in active development?

I've been hearing about The GNU PDF Library since 2007. Since then I've been looking forward to see this tool in the wild, but four years have passed and it seems to me that this is a painfully long ...
7
votes
1answer
4k views

Convert pdf to a different page size (US Letter -> A4)

I'm trying to print a simple US Letter document, but for some reason, I just cannot manage to fit it properly onto A4 when printing multiple pages per-list. I have tried converting the pdf using: gs -...
7
votes
3answers
5k views

Storing Okular PDF annotations and metadata in the PDF itself

The PDF viewer Okular (part of KDE desktop) has lots of nice features and supports lots of file formats. One of the things I like about it is the comments and annotations. Unfortunately, all of the ...
7
votes
2answers
3k views

Invert colors in whole PDF (convertion)

How to create pdf with inverted colours of original one? (Just like inverting whole screen with xcalib -i -a) Preferably : not loosing hyperlinks. But it's not requirement. It would be nice if ...
7
votes
1answer
2k views

How to extract annotations from PDF files?

Is there a command-line tool to extract annotations (comments added using evince) from PDF-files? I search such a solution to send people feedback on their submitted documents. Apart from replying ...
6
votes
4answers
4k views

Split PDF into documents with several pages each

There are several resources on the web explaining how one can split a PDF into many files with on page per file. But how can you split them into chunks of, say, five pages each? I have looked into ...
6
votes
3answers
2k views

Does Printing a PDF to PDF degrade its quality?

Say I have a PDF of a website which is very long. After reading some of it, I decide there are extraneous pages in it; but rather than finding the website every time I decide to eliminate a page, I ...
6
votes
4answers
5k views

How to view and edit the code of a pdf file

I was wondering how to view and edit the code of a pdf file? By viewing, I don't want to see the binary format, so I think hexdump may not be what I want. I tried gedit, but no encoding method can ...
6
votes
2answers
2k views

How to convert libreoffice ODT to PDF in bash

I am using libreoffice under CentOS 6. I can convert ODT files to PDF with: libreoffice --headless --convert-to pdf *.odt but the problem is that it only works when no document is open in libreoffice....
6
votes
1answer
401 views

Can Zathura's “dual” page mode use a page offset?

When viewing PDFs that are setup for print, I often want to view facing page spreads. Typically PDFs are typeset such that the first page of the file/part/chapter always starts on a right page so ...
6
votes
1answer
664 views

How to print password protected pdf with cups from command line?

I have a *.pdf file that is password protected. I have the password and I can view the pdf with mupdf. However, printing with CUPS via lpr -P PRINTERNAME *.pdf does not work. All my printing is done ...
6
votes
1answer
1k views

Find links and their positions in a PDF

I need to find all links in a PDF file, along with the page they're on and their X/Y position. Is there any tool or combination of tools I can use to do that?
6
votes
1answer
185 views

Wrong emblem used for PDFs created by LibreOffice

If I create a test pdf file in a directory, by using something like ls -al > testpdf.pdf the file is shown in Caja 1.4.0 with an understandable emblem that is 'acrobat-like'. If I create a ...
6
votes
1answer
1k views

How to convert a pdf to 4-up in landscape mode (ideally using ghostscript)?

I have pdf slides in landscape mode and would like to create a new pdf file containing the slides 4-up (in landscape mode again) like this: ----------------- | 1 | 2 | ----------------- | 3 ...
5
votes
2answers
7k views

pdf viewer for command line only

Is it possible to view pdf documents without having gdm (or similar) running? Rationale: I'm working on a remote server (assume no X forwarding) processing some data, creating some plots (assume pdf ...