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Questions tagged [pdf]

Portable Document Format (PDF) is an open standard for document exchange.

This file format created by Adobe Systems in 1993 is used for representing documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it.

Source: http://en.wikipedia.org/wiki/Portable_Document_Format

1457 questions
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How can I reduce the file size of a scanned PDF file?

I have a 72.9 MB PDF file that I need to shrink to 500 KB or below. The file was a JPEG image that I had scanned and then converted to PDF.
tamimym
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808
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20 answers

How can I extract a page range / a part of a PDF?

Do you have any idea how to extract a part of a PDF document and save it as PDF? On OS X it is absolutely trivial by using Preview. I tried PDF editor and other programs but to no avail. I would like a program where I select the part that I want and…
user72469
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16 answers

How to merge several PDF files?

There are a lot of software in Windows to merge PDF files but how can we do the same in Ubuntu?
Deependra Solanky
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577
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13 answers

How to convert PDF to image?

I have requirement of converting PDF pages to images. There is a background image with some text in my file, and when I save it as an image only the background image gets saved. Is there any software available for the same so that complete page can…
Deependra Solanky
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455
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10 answers

Convert a directory of JPEG files to a single PDF document

I have many JPEG files in a directory, and I want to convert them to PDF and concatenate them together to make a single document. How can this be done? I would prefer using the command line, as this process will be faster.
lovespeed
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How can I highlight or annotate PDFs?

Currently I need to highlight certain sections in PDFs, or add annotations (comments/notes). These modifications would need to be saved. What tools are out there to do this on Ubuntu?
ssanj
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5 answers

Trouble with batch conversion of .png to .pdf using convert

convert /home/bill/TempScan/*.png myfile.pdf gives error message: convert-im6.q16: not authorized `myfile.pdf' @ error/constitute.c/WriteImage/1037. Any help would be appreciated!
bill-lancaster
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16 answers

How to Edit PDFs?

I typically have two needs: Scenario A. Change a single PDF page. In this case I have a PDF but not the original source file used to create the PDF. I don't want to try to recreate the document from scratch. I'd like to open the PDF and change a few…
snowguy
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Extracting embedded images from a PDF

Before I started using Ubuntu I used Nitro PDF reader to automatically extract images from PDF files. Is there a PDF reader for Linux that does this? I would like to be able to extract images faster/easier than when taking a snapshot.
1kb
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What PDF viewers are available for Ubuntu?

Every second e-mail I get suggests to download Adobe Acrobat reader, but adobe.com doesn’t provide a Linux version. Which PDF Viewer are there available for Ubuntu? I’m fine with partial solutions, a perfect match however would not only display PDF…
NES
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How to open a PDF file from terminal?

I used to work on the Mac terminal before and I used: open file2open.pdf and the PDF file would be opened on preview or whatever my default viewer was. When I use it in the terminal in Ubuntu I get this error message: Couldn't get a file…
yayu
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21 answers

Is there software that can fill PDF forms?

I have some PDFs which are actually forms, with fields to fill. Is there some software that can fill those fields?
Pablo Fernandez
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192
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10 answers

How to remove the password from a PDF?

I have a password protected PDF file. I know the password but in order to share the file, I have to remove the password from the PDF and share an unprotected copy. How can I do this in Ubuntu with or without the GUI?
Chinmaya B
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Command line tool to crop PDF files

I am looking for an open source command line tool to crop PDF file just like we can do in Adobe Acrobat Pro. I have tried PdfTk, ImageMagick, PyPDF, and GhostScript—all with no success so far.
Rakesh
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18 answers

How can I install pdftk in Ubuntu 18.04 and later?

Is there any chance of getting pdftk working in Ubuntu 18.04? I need this for creating PDF files with a watermark in shell. Or, does anybody know a working alternative to pdftk to generate a PDF with a watermark in shell? I already check/try out…
WiKrIe
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