I am looking at this guide https://world.episerver.com/blogs/Daniel-Ovaska/Dates/2016/11/glimpse--episerver--true/ to use glimpse tool with Episerver but I can't find how to add Episerver tab to glimpse tool where it list all the page types information.
Sure. Which version are you using?
Using Glimpse.MVC5 version 18.104.22.168, Glimpse.AspNet version 22.214.171.124, Glimpse EF6 version 126.96.36.199
What version of Episerver do you have?
Episerver version 188.8.131.52
There is a version on Episerver nuget feed that you should be able to use for Episerver 11. Tested using a new Episerver 11 project. Just had to go to /glimpse.axd to turn it on (and be logged in as admin), otherwise you won't see it.
Updated Git repo here if you want to grab the source or the nuget package directly instead (you can set the nuget package source in visual studio to a local folder instead if you want it today).
Another tool I use for optimizing performance is prefix
Works great for development but should probably avoid in production. I usually only turn in on when actually optimizing the solution and then turn it off directly after. Sometimes it hangs the IIS in the background.
Application insights is another if you need it in production. Gives great insight what external or db calls that is the problem.
Good luck! :) It will be needed in your journey!