Making a PDF out of a chatlog doesnt work (anymore) as it did a while ago.

So, as the headline says: I try making a (rather large) chatlog of a current campaign into a PDF for easier reference and reading up. I'm using Firefox and use the option to see whole log. It is a total of 1921 pages according to the Preview window. I tried choosing the "microsoft print to PDF" option as well as the "save as PDF option, and here is what happens: a) microsoft print to PDF >> took about 30 minutes and finally created a file in excess of 284 MB. But it can't be opened. b) save as PDF >> stopped with an error after about 3 minutes, creating a part file of 105 pages at a size of 233 MB. I had another long time campaign of which I made a PDF about a year ago, with a total of 2099 pages - also using Firefox and the file created is about 20 MB. Now I am fully aware that such a large size is, well, "challenging" to process, yet in the past it works, making a much smaller (and readable) PDF with comparable page size. So I am wondering what changed in the meantime and how get a working PDF now. Another note: Yes, I am aware there's in theory the option to not save the whole big log, but save in parts. The problem with that, for some unfathomable reason, the whole 1921 pages were split by roll20 only in 7 section, though the campaign running for over a year and with perhaps 40 or so separate game sessions. This leads me to another question: How does roll20 determine when to break up a chat log in separate pieces? Apparently it is not one per session. Any suggestions and comments how this work - and how I can make a working PDF - greatly appreciated. Thanks in advance. Also: Happy new year to everybody. =^_^=

Hi Kathrin M.,  Your best bet is to file a bug report with the Devs via the Help Center  as the bug report forum is primarily for users helping users. But, perhaps someone will come along who has tried to turn such a large log into a PDF. 

This is a good question and please share the answer if you get one. I can confirm that historically speaking, there was changes in Roll20 recently (within the last 4-6 months) that affected the apperance of the External Chat Log, and it sounds like something that changed at-that-time may have increased the SIZE (amount of data) that a PDF-printer would need to parse through.  However another similar but different possibility is --- did you change Character Sheets, or start doing anything differently in the flow of your game chat? Such as adding GIF's to Attack rolls, or adding some other kind of Graphic that reprints frequently with a certain type of roll?  Or have your players started putting more JPG's and GIF's in chat? Something like that could also cause bulkier PDF's.

@Gold: No I didn't change character sheets or added graphics. Of course all the characters have tokens, but that is nothing new. So while mny token images would of course add bulk to the size, it has previously nowhere near that size. I dont use any GIFs. The thing is that I am not even sure if the problem is on Roll20's end or something caused by a Firefox update, so mostly fishing for ideas how to get a working PDF again.

You could try doing it in Chrome, see if it works that way.