Questions tagged [okular]

Okular is a universal document viewer based on KPDF for KDE 4.

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1 answer
78 views

Some pdf pages are blank in Okular

Short story: some programs, including Okular, display blank some of the pages in a specific (1000+ pages) pdf, but other programs, including some internet browsers, display all pages without blanks. ...
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0 votes
0 answers
27 views

Save file dialog list entries in seemingly random order for Chrome, Okular and other applications

I'm using Ubuntu 22.04.1. After upgrade from 20.04 several applications, e.g. Chrome and Okular, list files and directories in seemingly random order in File Open/Save As dialogs: I know that I can ...
0 votes
0 answers
24 views

Inline notes/comments font size is super small on Okular and Foxit Reader

It's almost random for Okular what size I get: normal or super small and illegible. Foxit Reader just super small. How can I change this in each. I'm on Ubuntu 22.04
1 vote
0 answers
30 views

Manually change Okular backend when/after opening a file

Okular has problems detecting Markdown files. For example (adapted from https://bugs.kde.org/show_bug.cgi?id=430538#c9) the following two files, for which only the second one is rendered as Markdown (...
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2 votes
1 answer
47 views

How to force Onboard appear on top of fullscreen apps in a tablet running Ubuntu?

Whenever Okular is fullscreen, there is no way to make Onboard remain on top of Okular. This behavior makes it impossible to annotate a fullscreen document (opened in Okular) in a touch screen tablet ...
0 votes
1 answer
99 views

font size okular note (pop-up)

I am using Okular on Ubuntu 20.04 and the font for pop-up notes was okay until one day it shrinks so now I have to manually go into properties and resize on each note. How can I configure a default ...
0 votes
0 answers
22 views

Okular, note in hebrew language dessapear after insert

When I try to insert some text in Hebrew, I see it in the window, but in the PDF page itself I don't see it.
0 votes
1 answer
25 views

Okular 20.12.3 does not open pdf after compilation in LyX (permissions issue?)

After updating okular from version 1.3.3 to okular 20.12.3 on Ubuntu 18.04.6 LTS it can can't open pdf after it's compiled in LyX 2.3.6.1 (after clicking View button). Error message: "Could not ...
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0 votes
0 answers
54 views

Okular (Snap & Flatpak) problem with inverse search

I am on Ubuntu 20.04, and the Okular versions available to me seem to be the following: apt: 20.04.0 snap: 20.12.3 flatpak: 22.04.03 I would like a version > 20.12, because that allows me to ...
  • 139
0 votes
0 answers
83 views

How to make Chrome open pdf files with Okular?

I've been using Chrome with Ubuntu 20.04 and it was set up to download and open pdf files in Okular. I upgraded to Ubuntu 22.04 and I don't see a way to have this functionality back. Chrome opens pdf ...
1 vote
0 answers
105 views

Adding Times New Roman font in Okular

I got a PDF with two fonts that aren't embedded: Arial and Times New Roman. On Okular, they are substituted by other fonts which I don't like. Then, I've added those Microsoft fonts to my machine with ...
  • 155
0 votes
0 answers
21 views

Okular's "open containing folder" results in "Malformed URL"

When I try Open Containing Folder from the File-menu of Okular, I get the following error: Here /home/jonas is the folder containg the PDF. Any idea what is going wrong here? I use Xubuntu 20.04, and ...
  • 1,599
1 vote
0 answers
439 views

Xorg. When screen sharing, Chome doen't see all programs in progress

When I start screen sharing with Google Chrome browser, it shows programs in progress except Okular, but I need it. Other programs that I tried are shown normally. Zoom shares the window with Okular. ...
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2 votes
1 answer
237 views

GTK Style selection not available in qt5ct after re-installation 22.04

As per @Archisman Panigrahi advice, I'm posting a new question regarding qt5ct. I've recently reinstall 22.04 and found that the Style drop-down menu only has Fusion and Windows, hence, I am unable to ...
0 votes
0 answers
44 views

Okular toolbar doesn't change according to gnome theme_22.04 [duplicate]

Installed Okular on 22.04 a couple of days back and after some tweaking realized that the toolbar doesn't change according to gnome's theme and I can't find the theme option within Okular for the ...
1 vote
1 answer
165 views

Zotero 6 is unable to open pdfs using the default application [Okular]

I think this is an Ubuntu problem because I am able to do simply double click items on Zotero if my default application is set to native PDF viewer. However, if my default application is Okular, I am ...
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2 votes
1 answer
108 views

View Windows-created pop-up notes in PDF files?

I am running Okular Version 21.12.3 on Kubuntu 22.04. I have PDF documents with pop-up notes that were created in Adobe Acrobat Reader, on Windows. When I open those documents in Okular, I can see the ...
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1 vote
1 answer
60 views

Okular change the color of bottom bar

I can make the bottom bar (the bar that shows page number) of okular disappear by adding the below line under [Main View] of okularpartrc (found in ~/.config). ShowBottomBar=false However, I am ...
0 votes
0 answers
229 views

Okular not showing installed printers

I have installed all Ubuntu Service Pack/Patches Untuntu: 20.04.4 LTS 64-Bit GNOME Version: 3.36.8 Okular: 20.12.3 I am only presented with one option for printer (File; Print) ...
4 votes
0 answers
1k views

Signing pdf with Okular

I saw that in Okular we can now digitally sign a document. I would like to know the steps from scratch to make this work. At the moment Okular tells me "There are no available signing ...
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2 votes
1 answer
267 views

two icons appearing for the same application

I installed okular using snap package. After installation, I see okular with two icons in show application, and both applications open an okular window after double-clicked. Why do I get two different ...
4 votes
0 answers
253 views

Increase scroll speed in Okular only

Okular scrolls (at least when using two-finger touchpad scrolling) much slower than most other applications on my computer (in particular evince). Is there some way to increase the scrolling speed ...
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0 votes
1 answer
288 views

How to change default applications: Doc Viewer to Okular

I'm on latest 21.10 (Wayland default, Gnome 40.4.0) and have the default "Document Viewer" (Evince?) for viewing pdfs. I'm having trouble with it hanging when I have too many open. So I'd ...
  • 2,105
0 votes
1 answer
90 views

Open + Save File window buggy in several applications (resizing left side also changes right side, moving window moves application, etc.)

I'm using Ubuntu 20.04, and several applications (Emacs, Firefox, Okular, Libre Office, OpenSCAD) all have buggy popup windows for opening and saving files. For example, when saving a file in Firefox ...
  • 154
0 votes
0 answers
55 views

How to change outer color?

I am in Xubuntu. I had downloaded Okular after reading it. I can change inner color. But what about outer color? picture I can rest my eye by inner color. But I am unable to change outer color. Is ...
2 votes
1 answer
762 views

How can I change Okular's GUI so I get white text on black background or similar, instead of blending colors?

Okular has an odd choice of font and background colors in some places and this makes it difficult to read some text. I looked at the settings and searched online but couldn't find anything on changing ...
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4 votes
1 answer
400 views

How to open pdf file in Nautilus as new Okular tab?

This works in the previous version (tested on 16.04): set Okular as default pdf viewer. Open nautilus, double click pdf file. Open another pdf file will bring new tab to Okular. But this method didn't ...
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1 vote
0 answers
28 views

Okular text annotations Mutated vowels

I'm using Kubuntu 21.04 Okular(Version 20.12.3) doesn't display german mutated vowels (ä,ö,ü) in text annotations. Maybe somebody could help me. Thanks in advance.
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0 votes
0 answers
340 views

Okular pdf print preview problem

On ubuntu 20.04, I am facing problems with printing from day one. I don't know where to start from. So I deleted cups and just focus on okular. However, the print preview is coming out bad and when I ...
  • 130
0 votes
0 answers
310 views

Okular can't print PDF

Okular can'r print pdf files. The document viewer prints it but all the fonts look bad (print preview works fine though). I don't know how to debug. So tired of this. What is the cups? Anyone can help?...
  • 130
1 vote
0 answers
53 views

How to get to the File menu in okular

I suppose this ought to be glaringly obvious, but how do I get to the File menu when I start up okular from the shell prompt? The screen I get has nothing resembling the usual File/Edit choices at the ...
  • 2,035
7 votes
3 answers
1k views

Okular does not respond anymore, needs Qt_5.15

I have Ubuntu 20.04 running on my system and was using the pdf-viewer Okular until recently. However, now Okular does not start when double clicking on a pdf-file and starting from the terminal gives ...
0 votes
2 answers
484 views

convert landscape image to portrait

I;m using the USPS app to generate a shipping label. The app doesn't print the label directly; instead it generates a PDF for it. The problem is that the image is in landscape mode, and I need it in ...
  • 2,035
2 votes
0 answers
308 views

How to disable "This document has forms..." info in Okular

I'm constantly changing a PDF (actually an animated LaTeX document), but every time Okular reloads the document, it shows a HUGE popup saying: This document has forms. Click on the button to interact ...
0 votes
1 answer
564 views

How to configure Okular to use SVOX pico for its "read text" functionality?

Okular has a nice read text functionality that by default uses espeak as a backend. As espeak has a rather robotic voice, I would prefer to use SVOX pico.
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1 vote
0 answers
757 views

Okular text annotation does not appear

I decided to give okular a try for editing pdf files but I am having an issue with the 'typewriter tool'. The text I type does not appear on the pdf itself within the okular editor. If I save the file ...
1 vote
0 answers
157 views

Segfault launching Okular snap

I'm using Ubuntu 18.04.5 on x64 PC. Packaged version of Okular is too ancient for my needs, so I installed the newest Okular snap. Unfortunately, it crashes on launch. Here is the log: paul@extra:~$ ...
4 votes
1 answer
2k views

How to purge okular?

I have ubuntu 20.10, 64 bit. In Menu, there are 2 instances of Okular. I can use it but cannot remove via Terminal. igor@igor-System-Product-Name:~$ sudo apt remove okular Reading package lists... ...
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1 vote
0 answers
237 views

Okular Document Review annotation bar

I am using the latest Okular (version 20.04.0 Snaped). Since I use Annotations/typewriter most often — it is impossible to place the annotation bar onto the toolbar — visible & easy to access. The ...
0 votes
2 answers
975 views

How to install Okular 20.12.0 on ubuntu 20.10?

I am using Okular from many time and I am running it in Ubuntu 20.10. I have tried it to update from 20.08.2 to 20.12.0 but it's showing Okular is upgraded to its latest version. How can I install the ...
4 votes
1 answer
783 views

In Okular, How to Highlight the Selected Text?

The Highlighter Tool ignores the text selection at the moment of choosing the tool. I would like to select the text first, then apply the highlighting effect via menu or shortcut.
0 votes
1 answer
169 views

How to view pdf with markup

I'm trying to view my advisor's comments on a PDF of a manuscript. He's made comments using Adobe software in the past, and I've been able to use evince or okular to view them. Now neither works, and ...
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1 vote
0 answers
205 views

Problem with fonts in okular in kubuntu 20.04

I am having a problem with fonts substitutions in kubuntu 20.04 using okular or evince (both). The file has some embedded fonts as in ------------------------------------ ----------------- ------------...
5 votes
3 answers
2k views

Invalid Context warnings about icon themes when starting certain apps

When I start okular from the terminal, I get a bunch of "Invalid Context" warnings about certain icon theme folders (both from Yaru, which is the theme set in Gnome Tweaks, and Adwaita). ...
0 votes
0 answers
31 views

Canceling an area of a Pdf page with Ocular

I'd like to cancel a specific area of a page; how can I do this with okular? In Windows I used Acrobat and it allows me to do this by putting a white text box on the desired area.
3 votes
3 answers
2k views

Okular review (annotations toolbar) not available

I have been using Okular (1.3.3) on Ubuntu (18.04) for a while now and feel pretty confident in my ability to be productive in it. However, suddenly, I am lost. I opened a PDF (as I have done 100s of ...
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1 vote
0 answers
128 views

How to get apps detect phonon_backend

I installed Okular 1.10 via snap and, unlike the previous versions, it can't play videos embedded into pdfs due to the backend problem: WARNING: bool Phonon::FactoryPrivate::createBackend() phonon ...
8 votes
1 answer
2k views

Help with debuggin KF5 / CMake error in building Okular to avoid jagged lines of freehand tool

I'm trying to compile Okular from scratch following these instructions (towards the end of the page): git clone https://invent.kde.org/graphics/okular.git cd okular mkdir build cd build cmake -...
  • 183
6 votes
3 answers
4k views

Multi-tab pdf reader and a way of opening pdfs in the same tab but not from within the app?

I'm using qpdfview and okular. They support tabs. But I do not see how to do the following: a) open (double click) files and have them open in one window as tabs b) "merge" all open windows ...
  • 411
0 votes
0 answers
180 views

Okular freezes attempting to open more than one document

I installed Okular in Lubuntu 20.04 (x64). Opening a file in Okular works with no problems. However, if I click any other document whose format (pdf, djvu, whatever) is associated with Okular in file ...
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