Mimic Firefox tabs - Don't load until clicked on the tab

[AntonioCS]

Hey,

I sometimes open a quite a few pdfs and don't really close them in Sumatra.
The issue is, that every time Sumatra opens it loads every PDF.

Would it be possible to do something similar to what Firefox does when I open it and it has 30+ tabs.
It will only load the tab when I click on it, it won't load them all at start.

[GitHubRulesOK]

Lazy Loading has already been raised as an issue and added at least once,
8826a63 2e5f670
#2153
#2590 #2591

closing as duplicate of #1497

[AntonioCS]

Right, I knew there was a better term for this.
So a PR has been merged that adds this? Nice. Guess I'll wait for the next release

[GitHubRulesOK]

There may be some residual reasons files load slow, most often polling or receiving a remote file, takes ages to load a remote one on https drive. Fastest way to load a file in such cases is as a mapped drive since a lot of the 2way comms is pre-processed.

using 3.5.15244 (see crash reports for 3.5.15249) I can fast load a stack of files from s:\ drive which is a home Share drive

What is not apparent to many users is that to see page 1 the whole PDF must be received to read the objects table of contents stored in its tail. Web enhanced PDFs attempt to hold the table near the head of file, but have to be crafted that way..