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In that case, you can use the backup to revert to the older settings. However, some PDF files may appear like photo film negatives in this mode. We need a darker background in the dark mode and this is exactly what we get using these instructions.

Next time when you launch Sumatra PDF Viewer, it will open PDF files with dark background and the text would be light colored.Īs you can see, it is not exactly the dark mode or dark theme available in other applications or browsers, but it does the job.

In this file find the values TextColor and BackgroundColor under the section FixedPageUI and change them to #F0F0F0 and #0F0F0F respectively.

You can make a backup of this file because we are going to edit it. This file stores all the settings for Sumatra PDF Reader.

This will open SumatraPDF-settings.txt in Windows Notepad.

Launch Sumatra PDF Reader, click on its menu and select Settings and then Advanced Options.

We can add this dark mode easily in Sumatra PDF Viewer using the following steps: However, it lacks the dark mode which is now being added to almost all the operating systems and applications. It has all the basic features one would expect from a standard PDF reader application for Windows. Using this we can open any PDF file as it supports all the PDF format versions. Sumatra PDF Reader is one of the smallest, fastest and lightest PDF viewer application available today.

This PDF viewing application not only works on older version of Windows but it is also available in a portable application package. This is where Sumatra PDF Reader shines as new ray of hope. As such, the people running relatively older computers are finding it increasingly difficult to open PDF files on their system. But these popular PDF reader applications are becoming more and more demanding of the system resources with the release of every new update. When it comes to opening PDF files on Windows or other platforms, Adobe Acrobat or Foxit PDF Reader comes to mind.

Sumatra pdf installer