Okular document viewer
E772960
Okular document viewer is a versatile, open-source multi-format document viewer from the KDE ecosystem that supports PDFs, e-books, images, and more with advanced annotation and navigation features.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Okular | 4 |
| Okular document viewer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9017980 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Okular document viewer Context triple: [KDE community, develops, Okular document viewer]
-
A.
Evince
Evince is a free, open-source document viewer for the GNOME desktop environment that supports formats like PDF, PostScript, DjVu, and TIFF.
-
B.
Atril document viewer
Atril document viewer is a lightweight, multi-format document viewer commonly used in Linux environments, particularly within the MATE desktop, to display PDFs, PostScript, and other document types.
-
C.
GSview
GSview is a graphical user interface for viewing and managing PostScript and PDF files using the Ghostscript interpreter.
-
D.
GNOME Image Viewer
GNOME Image Viewer is the default lightweight image viewing application for the GNOME desktop environment, designed for simple browsing and basic manipulation of image files.
-
E.
GNOME Files
GNOME Files is the default file manager for the GNOME desktop environment, providing a graphical interface for browsing, organizing, and managing files and folders.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Okular document viewer Target entity description: Okular document viewer is a versatile, open-source multi-format document viewer from the KDE ecosystem that supports PDFs, e-books, images, and more with advanced annotation and navigation features.
-
A.
Evince
Evince is a free, open-source document viewer for the GNOME desktop environment that supports formats like PDF, PostScript, DjVu, and TIFF.
-
B.
Atril document viewer
Atril document viewer is a lightweight, multi-format document viewer commonly used in Linux environments, particularly within the MATE desktop, to display PDFs, PostScript, and other document types.
-
C.
GSview
GSview is a graphical user interface for viewing and managing PostScript and PDF files using the Ghostscript interpreter.
-
D.
GNOME Image Viewer
GNOME Image Viewer is the default lightweight image viewing application for the GNOME desktop environment, designed for simple browsing and basic manipulation of image files.
-
E.
GNOME Files
GNOME Files is the default file manager for the GNOME desktop environment, providing a graphical interface for browsing, organizing, and managing files and folders.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
KDE application
ⓘ
document viewer ⓘ free and open-source software ⓘ |
| developer | KDE community ⓘ |
| hasComponent | okularpart ⓘ |
| license | GNU General Public License ⓘ |
| operatingSystem |
BSD
ⓘ
Linux ⓘ Windows ⓘ macOS ⓘ |
| partOf | KDE Applications ⓘ |
| programmingLanguage | C++ ⓘ |
| repository | https://invent.kde.org/graphics/okular ⓘ |
| supportsFeature |
accessibility features
ⓘ
annotations ⓘ book view ⓘ command-line invocation ⓘ continuous scrolling ⓘ digital signatures viewing ⓘ document bookmarks ⓘ drawing tools ⓘ export annotations ⓘ forms filling ⓘ highlights ⓘ inline notes ⓘ pop-up notes ⓘ presentation mode ⓘ printing ⓘ search within documents ⓘ stamps ⓘ table of contents navigation ⓘ text selection ⓘ thumbnails view ⓘ two-page view ⓘ underlines ⓘ |
| supportsFormat |
Comic book archives (CBR/CBZ)
ⓘ
DjVu ⓘ EPUB ⓘ FictionBook (FB2) ⓘ
linked to:
FictionBook
Mobipocket ⓘ
linked to:
Mobipocket format
ODF ⓘ PDF ⓘ
linked to:
Portable Document Format
PostScript ⓘ TIFF ⓘ images ⓘ |
| usesFramework |
KDE Frameworks
ⓘ
Qt ⓘ |
| website | https://okular.kde.org/ ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Okular document viewer Description of subject: Okular document viewer is a versatile, open-source multi-format document viewer from the KDE ecosystem that supports PDFs, e-books, images, and more with advanced annotation and navigation features.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Okular document viewer
linked to: Okular document viewer
linked to: Okular document viewer