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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7
votes
3answers
446 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 ...
5
votes
4answers
5k 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 ...
2
votes
1answer
36 views

Recover pdf from extracted images

Here is the information of images in a single-page pdf file: $ pdfimages -list p1.pdf page num type width height color comp bpc enc interp object ID ...
2
votes
1answer
55 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 ...
1
vote
2answers
55 views

Extract words instead of letters from pdf files?

I use less which uses pdftotext to extract text from pdf files, by less my.pdf. In this way, some words' letters are separated by spaces from a pdf file. CH APTE R 2 5 T E ST IN G WE B A P P ...
2
votes
1answer
54 views

Exchange odd and even pages in a pdf file?

Is it possible to exchange odd and even pages in a pdf file, e.g. page 1 and page 2 exchange, page 3 and page 4 exchange, ..., assuming the pdf file has even number of pages? Can it be done using ...
1
vote
1answer
27 views

Splitting a PDF file with Ghostscript results in one extra blank page

I try to split the pages of one PDF file into a separated one-page PDF files. This command does the job so far: gs \ -q \ -dQUIET \ -dSAFER \ -dBATCH \ -dNOPAUSE \ -dNOPROMPT \ ...
1
vote
0answers
21 views

Show annotations in PDF

I have a PDF file that has annotations in them. Comments that are in a box show up, but removed words or other insertions do not appear. I don't need to add any annotations; I just need to view them. ...
3
votes
1answer
41 views

Combine parts of pages of a PDF document

I have a PDF which has some content split onto 2 pages. The first part takes less or equal the bottom half of the first page and the second part takes less than the top half of the second page. For ...
2
votes
3answers
70 views

How can I convert a scanned PDF with OCRed text to one without OCRed text?

I have a scanned PDF file, with low-quality OCRed text. I would like to have a PDF file without the OCRed text. How can I convert a scanned PDF with OCRed text to without OCRed text? I am thinking ...
2
votes
1answer
49 views

All PDF applications mix the width and height of a PDF file

I have this PDF file created by scanning. When viewing it in any PDF viewer, the page's width is greater than the height. But it seems like all the PDF applications I have tried mistake the width as ...
1
vote
0answers
22 views

can I create a PDF from ImageMagick which will always open at zoom 100%? [migrated]

I am running with an issue in png to pdf conversion.Actually I have big png file not in size but in contents.In pdf conversion it create a big pdf file. I don't have any issue with its quality, but ...
4
votes
1answer
700 views

Configuring CUPS PDF writer for PDF/A output?

Can the PDF pseudo-printer in CUPS be configured to emit PDF/A files? If so, how to do it? I'm using CUPS 1.5.3-5 and CUPS-PDF 2.6.1-6 as provided by Debian Wheezy/7.0. Despite CUPS PDF Format - ...
3
votes
2answers
343 views

using `lpr` to get file name and page numbers printed on pdf

I have a PDF file and I want to print it with the file name and page numbers added somewhere on the page. Is this possible with lpr? If not, what utility can I use to transform the PDF file first? I'm ...
1
vote
0answers
15 views

zathura : auto reload but looses zoom

I use zathura as my pdfreader. It is great but I have some issue with the auto-reload. When I compile a .tex file, it's associated .pdf file is automatically reloaded in zathura and correctly displays ...
0
votes
2answers
33 views

How do I download a PDF, then output a chunk of text?

My city water bill is emailed to me every month as a link to the current PDF hosted on their server. So I can easily download this PDF any time I want. How do I take that PDF and extract my account ...
1
vote
1answer
60 views

What happened to ePDFview‽

In my older Fedora installation (It's Fedora 20 right now, but I've been updating it since well before FC18), I'm using a rather minimal PDF viewer, called "ePDFview". It seems to be gone from more ...
4
votes
3answers
3k 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 ...
1
vote
1answer
35 views

Print a PDF with scaled content

I have a 150 page long pdf file where individual pages are shrunk. I need to magnify the file upto 900% to read anything on the screen (and it is readable at that magnification). I would like to print ...
3
votes
3answers
2k views

Can't print to PDF using cups-pdf; used to work, now “failed to set file mode” printing as non-root

Here's something really odd: something that used to work fine in Debian, and then broke, even without a dist-upgrade. I used to be able to use the CUPS PDF virtual printer to print anything to a PDF ...
1
vote
1answer
34 views

Vi keys in Xpdf?

The Xpdf man page says that it can be customized to work with Vi style keybindings: Previous versions of xpdf included a "viKeys" X resource. It is no longer available, but the following ...
7
votes
5answers
1k 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 ...
27
votes
6answers
16k 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 ...
3
votes
3answers
3k 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 ...
0
votes
0answers
59 views

How to install evince on CentOS Linux release 7.0.1406

On my CentOS Linux release 7.0.1406 the PDF reader doesn't render image colours correctly that's sent from MacOSx/CS Adobe Acrobat. Is there a way to install Evince with Yum on this particular ...
7
votes
3answers
4k 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? ...
2
votes
2answers
23 views

How do I export visiting cards onto one page?

I have a script to generate visiting cards for the entire team from an svg template. It spits out a single pdf the size of a visiting card, like so: +-----------------+ | o o | | ...
1
vote
1answer
23 views

Does okular/poppler support following intra-document cross-references in PDF files?

Using docbook and Apache FOP I can create PDFs that contain cross-references. For example, the Table of Contents of a book looks like this: Chapter 1 Introduction........................12 Using ...
4
votes
4answers
2k views

How can I print half of a page to a pdf file?

I have a one page PDF file with scanned documents. I need to send only top half of this document to someone. How can I generate a new PDF document with only the top half of the original page, without ...
2
votes
2answers
56 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 ...
7
votes
4answers
760 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. ...
2
votes
1answer
54 views

How to tell if the hidden text layer in a pdf file is from OCR or not? [closed]

I have seen some pdf files after OCR have very accurate text (both in terms of recognition rate, and in terms of alignment of text to the image). What Unix/Linux tools help me tell, if the hidden ...
4
votes
1answer
51 views

Avoid bloating file size when removing OCRed text from a pdf file?

I use pdfimages and convert recommended by Anthon to remove the OCRed text of a pdf file, and the size of the pdf file changes from 29MB to 373MB. My first step is split the pdf file into a pbm file ...
0
votes
1answer
33 views

How can I remove a clickable bar with hyperlink in each page of a pdf file?

Can we remove a long narrow clickable bar(with some hidden text and link) at the bottom of each page of this pdf file? When never I click it, it will tries to open a website in my browser. I prefer ...
0
votes
1answer
38 views

Page size after pdfcrop doesn't match my calculations?

I'm running: $ pdfcrop --margins '-36 -59 -49 -35' tmp.pdf tmpo3.pdf But the page sizes before and after don't match with my calculation. My calculation shows that the page sizes in points after ...
0
votes
1answer
71 views

Merge and export OCRed text into and from a pdf file

Given a pdf file, and a html file in hocr format for the OCRed text, can we merge the OCRed text into the pdf file, so that the new pdf file can be searchable for text? For example, I have a pdf by ...
4
votes
1answer
114 views

Ways to convert and combine image files into a pdf file?

I have about 190 image files (png and jpg) in a directory. For more information, each image has 2500 x 3072 pixels, and about 500KB. I use the command convert from ImageMagik to convert and combine ...
4
votes
0answers
32 views

Compare PDF documents with embedded links?

diffpdf shows the visual differences in two PDF documents. Since some PDF documents include hyperlinks is there a diff that handles those also?
1
vote
2answers
95 views

Which is the software package for creation of PDF documents on Debian and OpenBSD OSes?

I have installed the software package called evince. It only opens and reads PDF files but does not create them. What software package should I install on boxes that run Debian (or OpenBSD) that can ...
5
votes
1answer
69 views

Sterilize PDF files

I use Linux on my desktop, but I got suprised after checking random PDF files on my machines with Virustotal. One of them contained a "PDF.Exploit.CVE_2008_2992". So PDF files can have malicious ...
0
votes
0answers
19 views

Print the page count within the PDFs in a directory to a output txt file [duplicate]

The need has been to identify the total page count of all the PDF files we have in a repository. For that, I was able to come up with the following script. However, I'm now stuck with this situation: ...
1
vote
0answers
48 views

How to force custom color scheme when using Inverted Colors in Evince?

As pointed out in Software to read PDFs with inverted colors (Windows), instead of having a very white on very black color scheme (which induces a very nasty contrast) it is often preferable to use a ...
0
votes
0answers
45 views

use middle click scroll not zoom

How to change middle mouse button (when pressing) behavior in Okular? Currently, when I press it, it zoom in/out. But I want to use it for fast scrolling, something like in firefox or evince.
2
votes
1answer
66 views

Using Evince instead of Okular for Alpine (MIME configuration for PDF viewers)

Within Alpine, if I hit enter on a PDF attachment, my system brings up Okular. I would prefer if it brought up Evince, because that's the PDF viewer I normally use. How can I do that? This is clearly ...
1
vote
1answer
92 views

Fix PDF margins for two-sided printing

I have a free PDF book on which every page has a very large margin on the right-side. I would like to print it two-sided and bind it to a book using an online printing service. The problem is that I ...
1
vote
0answers
28 views

How can I workaround or fix a printer offset x0y?

OK, so I have an old office reject printer, the OKI B4350. Works great with CUPS and Evince except for one thing: often it prints the page all messed up: offset from the upper left corner and ...
3
votes
1answer
174 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 ...
7
votes
1answer
327 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 ...
4
votes
3answers
1k 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 ...
3
votes
1answer
156 views

Ligatures missing in some PDFs

I have some PDFs which, when viewed in readers under Linux (tried atril from MATE and evince from GNOME), the ligatures (e.g. fi, fl) are missing, as can be seen from the example (it should be ...