NightPDF - reading PDF in dark mode

NightPDF is an application that allows you to read PDF files in dark mode. Free and open source program

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There are several filters for reading PDF files in dark mode: 3 default filters (monochrome, sepia and redeye), as well as the ability to create a custom filter or use without a filter;
NightPDF has a simplified design that makes it intuitive to use;
You can add text (choosing the size and color of the text) and draw (choosing the color, thickness and transparency) in PDF files;
In the sidebar, you can view thumbnails, contents and attachments of a PDF document;
Tab support;
There is a scaling of the document;
There is a presentation mode;
There are tools available: text selection and hand;
It is possible to rotate the PDF document clockwise/counterclockwise;
You can select page scrolling: vertical, horizontal, scalable;
You can choose a U-turn: no U-turn, even/odd pages on the left;
You can view the properties of the documents.

The software NightPDF is available for installation on Linux, Windows and macOS.

Installation method	OS
Deb	Ubuntu* 16.04/18.04/19.04/20.04, Linux Mint 18/19, Debian
RPM	openSUSE, Rosa Linux, Mageia, ALT Linux, Fedora, CentOS, Red Hat Enterprise Linux and others
Flatpak	Ubuntu, Linux Mint, Debian, Arch Linux, Fedora, CentOS, KDE Neon, openSUSE, elementary OS, Manjaro, Red Hat Enterprise Linux
AppImage	Ubuntu, Fedora, openSUSE, CentOS, elementaryOS, Linux Mint and others
EXE	Windows
DMG	macOS

*Ubuntu (GNOME), Kubuntu (KDE), Xubuntu (XFCE), Lubuntu (LXDE)

Install Software via Deb package

Install Software via RPM package

Install Software via Flatpak package

flatpak install flathub io.github.lunarequest.NightPDF

Install Software via AppImage package

Install Software via EXE package on Windows

Install Software via DMG package for macOS

Language Interface:	English, Russian, Deutsch, Spanish, French and others
Description version:	2.0.3
Developer:	Lunarequest
Programming language:	Electron
License:	GPL v2
Software website:	github.com/Lunarequest/NightPDF