There have been 'many crash and other bug fixes' on top of that including one that fixes scrolling when touchpads are being used. All you need to do is set the preference to false in the settings.

Sumatra users who don't want this to happen can disable it by editing the RestoreSession parameter in the Advanced options. The third, and last big change, is a new session restore option on start that will reload all opened documents of a multi-document sesson on startup. According to the author, it improves the reliability of the printout at the cost of extra memory. The main reason for this is that Sumatra will always print as image now (this was only a choice in previous versions). If you are printing regularly using the program, you may notice an uptick in printer memory usage while doing so. That's however not the only change introduced in Sumatra PDF 3.1. These builds don't change the functionality of Sumatra but may be useful for PDF documents that are extremely large and resource consuming.

Today's update, the first in over a year, introduces 64-bit builds of the PDF reader. Sumatra PDF is not an editing tool, and if you are looking for that functionality, you better check out programs like Foxit Reader or Nitro PDF Reader if you don't want to use Adobe Reader. Sumatra PDF has risen to fame as a lightweight resource-friendly PDF reader supporting that is highly effective when it comes to reading PDF documents and other document types it supports. Most web browsers ship with PDF support and while that is great for quickly reading a PDF that is available on the Internet, it is usually better to use third-party programs instead as they offer better functionality and are more flexible when it comes to it. While that ensures maximum compatibility and access to additional features that pure reading programs don't offer, it is heavy on the resource side of things and prone to security issues. They can go down the traditional route and install a heavyweight application like Adobe Reader for example.

Sumatra pdf reader android