The idea was indeed to find the sweet spot between image quality and image weight.

Streamed images are resized so that theit width does not exceed 1536 pixels.

Unfortunately the "shrunkPageWidth" and "shrunkPageHeight" are not related to this feature, so you won't see any change.

(out of curiosity, in which cases would you need the original resolution ?)

Pull request merged (sorry for the delay).

Apparently you closed your pull request yourself.

You have to create it and leave it open until I merge it into my repository.

It's not really an issue, I can reopen it.

Just give me a few days to find the time to look at it and merge it (I'll try to do it this WE).

In any case, thanks for the contribution !

I focused on the second issue (the page loading one), which is apparently not caused by Ubooquity itself.

As for the hardcoding of the "comics" and "books" section, I still don't see how I could have these two different sections without them having different paths.

I may have missed something, but I can't reproduce the issue.

Here is what I tested:

Full nginx config file:

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    
    server {
        listen       80;
        location /comics {
            proxy_pass http://10.0.0.3:2202;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Real-IP $remote_addr;
        }        
        
        location /comics/admin {
            proxy_pass http://10.0.0.3:2203;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }
}

Direct access to Ubooquity:

Access through Nginx:

Your Java version is fine, and Windows 7 should not be an issue either. I'm sorry, I don't know what's going on. :(

Could you give me your nginx config (the part that for the reverse proxy) ?

Yes, there seem to be something seriuosly wrong with your installation.

Do you run Ubooquity on a recent version of Java 8 ? (I haven't tested it with Java 9)

Your arguments are valid, but I still believe they don't outweigh the advantages of embedded metadata.

I created an entry in my backlog to add external OPF support in Ubooquity, but since this is a very specific scenario, it's unlikely to be implemented anytime soon.