Ubooquity is a process like any other, so I guess you could do it like that:

https://serverfault.com/questions/205498/how-to-get-pid-of-just-started-process/205563

You're right, mobi files can only be downloaded.

For ebooks, only epub and PDF files can be read online.

To regenerate thumbnails without performing a full rescan, you need:

• to have the "Scan collection at launch" option checked (in the "General" settings tab)
• to change the size of the thumbnails in the settings and restart the server by using the blue button on the top right corner of the screen.

But thumbnail extraction and generation is what takes probably about 95% of the scanning duration. So you might as well  clear your database (there is also a button for that) and rescan everything.

Ubooquity reads the ComicInfo.xml file mentionned by Matthieu.

The following tags are extracted: (not all of them are displayed in Ubooquity yet)

"Title"
"Writer"
"Penciller"
"Summary"
"LanguageISO"
"Series"
"Number"
"AlternateSeries"
"AlternateNumber"
"Volume"
"Genre"
"Publisher"
"Year"
"Month"
"Day"

Adding custom tags is not possible (nor planned).

I downloaded your example and was able to reproduce the problem.

It seems to be a color space issue in the PNG files of your comic (the first page is a JPEG that does not have any issue) that happen when I try to create the JPEG file that is sent to your browser.

I tried a few things to fix the issue, without success, unfortunately.

I'm out of ideas, so I'll have to leave it at that. Sorry.

Nice try.  ;p

Someday, Ubooquity themes will also contain HTML templates with variables (using Mustache) so that the structure of the page itself can be customized.

Someday...

If you are talking about the Synology tutorial, it was not written by me (I don't have any NAS), so I wouldn't know what to update.

The good news is I moved the documentation to Github a while ago, so anybody can submit pull requests to update the tutorials. ;)

Of course, that's a bug introduced in 2.x.

The problem is that the Java version you are using does not contain the UI framework used by Ubooquity.

To fix that, either:

• use the official Oracle JRE (or JDK) instead of OpenJDK
• try using the "--headless" command line option that will disable the desktop UI, allowing Ubooquity to run without these libraries (no guarantee of success though).

In any case I recommend using the Oracle version of Java.