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Questions tagged [okular]

Okular is a document viewer from KDE.

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PDF reader with thumbnail preview in the opening dialog

Situation: I download lots of PDFs which have unhelpful file names, such as arXiv papers (thanks, 1807.03042.pdf). I'm often reading one of them in Okular and want to switch to another, say just to ...
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1 vote
0 answers
190 views

Maximum number of clients reachedqt.qpa.xcb: could not connect to display :0

I am using Linux Mint 20.1 Cinnamon with kernel version 5.4.0-97-generic. I am facing recent issue when try to open okular from terminal or start-menu.. Maximum number of clients reachedqt.qpa.xcb: ...
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0 votes
1 answer
67 views

How does an app get or find toolbar icons?

On Manjaro Linux, I installed the Okular PDF viewer. On its toolbars are various icons (e.g. the "hand" icon used for scrolling with the mouse). My questions are: Are these icons part of ...
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  • 3
2 votes
1 answer
758 views

How to create a self-signed certificate for Okular PDF

I am at a loss. I want to create a self-signed certificate to sign PDFs with Okular. I have not found any step-by-step directions that work. I tried creating and installing a certificate, but Okular ...
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1 vote
1 answer
78 views

Disable "speak text" in Okular

I have personally no need for this feature and have never activated it except by error. Sometimes I click that instead of copy and that unpleasing voice starts without any obvious way to make it stop....
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  • 968
0 votes
1 answer
55 views

Cosmetic Glitches in Okular in Fedora 33 KDE

Okular shows "No Text" in place of "File" and other menu items in the top menu bar. See screenshot. I've tried removing and reinstalling the program to no success. What's causing ...
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1 vote
1 answer
198 views

Annotations not working in Okular (missing characters)

Yesterday, I upgraded to Fedora 34 from a F33 install. Today, while using Okular (KDE's PDF reader), I noticed that special characters (áéíóúç etc...) doesn't appear in annotations made within the PDF....
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0 votes
1 answer
284 views

Is there a way of creating a hook on Okular for copying text when highlighting it?

Currently, when I use Okular, I can either be in highlight mode or text selection mode, but not both at the same time, which is very annoying because, while reading, I often copy excerpts of the text ...
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1 vote
0 answers
80 views

open with ... causes one program to appear multiple times

I have a: fresh installation of Linux mint 20 cinnamon a week ago (luv it) and i have 3d ays ago installed okular for pdfs. My Problem: when i want to open a file, that is unknown to the system with ...
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  • 26
1 vote
0 answers
171 views

How to prevent okular from opening the same file in new window?

I use okular on a gnome desktop to open pdf files directly from zotero and then annotate them. However, sometimes it happens that I have the same file open in two different workspaces and if I ...
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2 votes
1 answer
112 views

How to copy paste a created text(annotation) by "typewriter" menu tool?

If I write an annotation by "typewriter" tool, how can I just duplicate it, copy pasting? I can't believe it is not doable....
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  • 181
1 vote
1 answer
357 views

Bad rendering of graphics in Okular at higher zoom levels

Once you have inspected the screenshots below, you will see that Okular is significantly worse at rendering my two test files than many other well-known viewers. This is unfortunate, because in ...
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0 votes
1 answer
187 views

Okular can only open files from certain folders

I use okular for annotating some of my PDFs but have been having an issue recently where I can only open files that are on my SSD where I installed ubuntu, but not on the 2nd hard drive (located at /...
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3 votes
1 answer
308 views

How can I make annotation for djvu file when using Okular?

My OS is [03/13/2020,14:35:06@~]$ uname -a Linux debian 4.19.0-8-amd64 #1 SMP Debian 4.19.98-1 (2020-01-26) x86_64 GNU/Linux That is, Debian 10 (Buster). When in Debian 9, I can make annotation in ...
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  • 131
3 votes
1 answer
106 views

Okular opens PDFs without colours

I am using okular on Fedora 31. Any pdf I open is opened without any colours! It is grey colored. Any idea what causes this?
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  • 133
2 votes
1 answer
1k views

Why is flatpak so much bigger than snap (at least for Okular)?

I was looking at the best way of installing Okular in Xfce, avoiding too many dependencies. While apt mentions 100 dependencies in a 19 MB download, taking 101 MB on disk, I have tried flatpak and ...
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  • 968
12 votes
5 answers
12k views

How do I delete a page from a PDF in Okular?

Didn't see an option in the menus or any documentation on what I imagine is something simple: I have a multi-page PDF and want to delete a specific page within Okular's GUI.
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  • 1,287
5 votes
0 answers
983 views

How to make okular open http/https links in PDFs with firefox?

I'm on FreeBSD and have compiled and installed the graphics/okular port (i.e. not much else of KDE4 other than okular's dependencies.) This has installed version 1.8.0. I start my X11 manually with ...
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  • 1,670
10 votes
1 answer
2k views

how to un-hide the Menubar in Okular

In Okular, the visibility of toolbars and panels can be toggled via Settings on the Menubar. From this menu, even the Menubar itself can be hidden, which leaves me with no way to restore it. How do I ...
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  • 1,397
1 vote
1 answer
49 views

Okular annotation settings: porting from Opensuse to Mint Mate

I have two laptops: one with OpenSuse 15 and another one with Mint. I would like to have the same Okular settings (toolbar and annotations in particular) in both systems. I have everything ...
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  • 165
3 votes
1 answer
66 views

Way to search pdf for annotations, edits and other review markings?

Problem: When I get a proof-read pdf back, sometimes there is only one mark every ten pages or so - and that mark can be so small (missed comma, etc.) that I might miss it when scanning through for ...
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2 votes
0 answers
345 views

Duplex printing on Kubuntu by default

When I was using Ubuntu 16.04, duplex printing worked like a charm with my Brother DCP-J4120DW. However, I switched to Kubuntu 18.04. This makes Okular the default document viewer and also my document ...
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  • 2,955
4 votes
2 answers
553 views

Change colour of Okular task-bar-icon in desktop-panel for specific document?

I use Linux Mint 18 and often have a lot of PDFs open in Okular at the same time. One of these documents is more important than the others, and I want to change the color of its tab, in the panel, so ...
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20 votes
3 answers
10k views

How to restore Okular default (toolbar) settings

I've somehow managed to remove the toolbar and menu-bar from Okular. After I've found no way to reactivate them from "outside" – sice I can't click on Options anymore – I've tried to reinstall a clean ...
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1 vote
0 answers
54 views

Is there a way to launch okular, emacs, etc. in order to have fast pop up at command line

When I run emacs or okular from command line (these are two apps I use all the time) they are slow to launch. Is there a way to just have them running and ask for new frames from the command line?
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4 votes
4 answers
1k views

How do I open files with flatpak okular from command line?

I have an alias for okular installed with flatpak that is set up like this: alias okular="org.kde.okular" It opens up okular from the terminal. However if I try to open a file from the terminal with ...
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1 vote
0 answers
2k views

How to open PDF-file locked by password?

I discovered a PDF-file in my home directory apparently generated 2 years ago, of which I have no recollection how it got there; all my attempt to open it by using either "okular" or "acroread" ...
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  • 91
0 votes
2 answers
471 views

Disable Okular Cache

I have a problem with okular (or it is actually not a problem but irritating). Because of reasons I sometimes start okular from command line (zsh) and after I closed okular (sometimes after some ...
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2 votes
0 answers
191 views

kbuildsycoca4 issues after upgrading from Centos 7.3 to 7.4

I've taken over supporting a number of users on Centos desktops. I recently upgraded from Centos 7.3 to 7.4, after the upgrade when the program okular is run from the command line we get the ...
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1 vote
1 answer
742 views

Customize the folder where Okular saves annotations

I know that Okular saves the annotations made in a PDF document in ~/.kde/share/apps/okular/docdata. I would like to change this directory into the same one where the PDF document is. I cannot seem to ...
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1 vote
0 answers
223 views

Huge Okular fonts

I've been having a problem for a while now in that I, at some point, accidentally made my fonts in Okular HUGE. (See figure) Since I don't know what I did, I also don't know how to undo it. I'm using ...
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5 votes
1 answer
2k views

Which command allows me to read a pdf from stdin?

I am looking for a GUI program that opens a pdf from stdin. For instance, if pdf_stdin is the command that opens my pdf from stdin, I'd like to use ggp -d -r mail@mail.com encrypted.pdf.gpg -o - | ...
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  • 4,248
1 vote
2 answers
2k views

Okular in ubuntu cannot perform "selection" and copying&pasting

A "selection" tool in my okular 0.19.3 (soft -- ubuntu, 14-04) allows me to choose only one of those: "selection tool", "text selection tool", and "table selection tool". I need only "text selection ...
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  • 91
0 votes
1 answer
5k views

Proper way to install Okular

Does someone know a proper way to install Okular on Linux Mint? I used command-line and package manager, both give same result: Okular doesn't have any icon, cannot open pdf, interface has disabled ...
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  • 123
4 votes
0 answers
338 views

Export comments only from Okular Pdf-reader (tangling)

I use Okular annotations for my Pdfs and use the highlighting and underline-features quite frequently. From some documents it would be nice to export all the passages, that have been highlighted to a ...
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  • 141
12 votes
1 answer
1k views

Is it possible to make okular not flash when reloading a file?

When I am writing a TeX document, I use a setup to automatically recompile my *.tex files into a pdf as soon as a source file changes (using latexmk). So I put a terminal with nvim on one side of the ...
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2 votes
1 answer
2k views

Newer version of Okular can no longer annotate certain pdf files

I recently updated to Ubuntu 16.04 LTS from 14.04 LTS, and the Okular version now is 0.24.2. Now I cannot annotate certain pdf files (the "review" option is simply greyed out), which I previously had ...
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  • 637
5 votes
0 answers
491 views

Is it possible to have multiple "--unique" windows in Okular?

I am using Okular to view LaTeX documents as I am writing them and occasionally compiling. I used to use Evince but I had a lot of trouble setting up forward/reverse searching, which is easy to do in ...
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  • 203
3 votes
0 answers
468 views

Is there any way to recover unsaved annotations in Okular after system crash

Other popular PDF software such as Adobe Reader or Skim (on OS X) offer a functionality to restore your annotations after a system crash even if you haven't saved the file manually yet. Does Okular ...
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  • 637
4 votes
1 answer
4k views

Open multiple pdfs in Okular from command line

I have Okular configured that when it's already running and I open a pdf from the command line, it should open the new file as a new tab in Okular. However, if this new file is in another directory ...
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  • 155
4 votes
0 answers
570 views

Okular - Transparent inline note?

In Okular, when I set the opacity of an inline note to 0%, the note just disappears altogether, and I don't think that's the intended behavior of this setting. I've read on forums that this setting is ...
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  • 637
2 votes
1 answer
393 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 ...
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  • 1,670
0 votes
2 answers
1k views

Annotation does not work correctly in Okular

I hava a pdf file. In okular 0.17.2 under Ubuntu 12.04, I have found two problems: added inline note (by F6, and then 2) will be rotated 90 degree counterclockwise. added underline (by F6, and then ...
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  • 89.8k
1 vote
0 answers
755 views

Okular doesn't work any more

Under My Ubuntu 12.04, Okular worke fine until I recently run apt-get upgrade. Now I can start Okular, but when try to open a pdf file, Okular just flashes and exits. Here is the output when I run it ...
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  • 89.8k
1 vote
2 answers
2k views

Problem installing Okular from ppa under Ubuntu

Under Ubuntu 12.04, I installed Okular from a ppa. After I installed it, I ran into the following problem of opening a PDF file: $ okular my.pdf Got bus address: "unix:abstract=/tmp/dbus-5dWEZJSTX0,...
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  • 89.8k
3 votes
1 answer
4k views

Change and save pdf annotation setting in Okular?

In Okular, I add inline notes to a pdf file. I change the default settings for inline notes: from default font "Ubuntu 13" to "Ubuntu 6", and from default opacity 100% to opacity 0%. But I have ...
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  • 89.8k
0 votes
1 answer
466 views

Upgrade okular in debian wheezy

I have okular version 0.14.3 with KDE 4.8.4. I use debian wheezy and I dont know how I can upgrade to 0.15 version of okular.
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  • 21
2 votes
1 answer
2k views

Converting .okular file to pdf

I am using a djvu file, and with okular I have annotations in it. Now, I wish to be able to use this file in Mendeley, which supports only pdf extensions. I know that I can save annotations in okular ...
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  • 21
7 votes
2 answers
3k views

If I open the same file twice in Okular, switch to the existing window

I have always been confused why the file manager in Linux cannot stop applications from opening a single file twice at the same time? Specifically, I want to stop the PDF file reader Okular from ...
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  • 113
19 votes
5 answers
16k 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 ...
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  • 2,956