Definitely needs optimising for user experience indeed!
However the serving of this JS has nearly no cost to us (as they are cached at the edge by DDoS-Guard and the frontend is otherwise entirely static on our end)
However the serving of this JS has nearly no cost to us (as they are cached at the edge by DDoS-Guard and the frontend is otherwise entirely static on our end)
According to Alexa you have a 46.4% bounce rate. [1]
When 46% of your users aren't coming back, how does 31 round-trips to your server for 100% of first-page visitors save anyone time or bandwidth? Your pageviews per visitor is 6.8, meaning the 53.6% that stick around view an average of 11.8 pages each. Even if there are zero subsequent js requests on other pages (clicking a random page I see 8) you would be generating 31 requests up-front to save 10.8 subsequent requests for about half of your users. (And again - in any scenario where the number of js fragments transferred on subsequent requests >= 1 even this benefit goes out the window.) How does that save you or your users bandwidth, server load, or other overhead?
The scale is not quite linear, but generally speaking, if you get your number of requests down from > 100 to < 5, you'll be able to handle around 20x the traffic with the same number of web-facing servers. Or alternatively the same amount of traffic with around 1 / 20th the servers.
Would that have a material effect on your costs?
[1] https://www.alexa.com/siteinfo/mangadex.org