Office 365 - SharePoint - Hidden or Secret URLs

Microsoft hides many URLs that can be valuable to any SharePoint or O365 administrator.  However note as always that you should test all the following links in your test or dev environment.

So here is a list of very informative URLs "hidden" in SharePoint. 
Just substitute your site collection URL for http://intranet.contoso.com, http://siteurl, or http://yourservername/sites/yoursite/

Office 365 (11.16.2018)

More from the cloud engineer

http://thecloudengineer.blogspot.com/2018/11/office-365-hidden-or-secret-urls.html

SharePoint

Site Content and Structure

http://intranet.contoso.com/_layouts/sitemanager.aspx

User Information List

http://intranet.contoso.com/_catalogs/users/simple.aspx
http://intranet.contoso.com/_catalogs/users/detail.aspx
http://intranet.contoso.com/_layouts/15/people.aspx?MembershipGroupId=0

Logon As Different User

http://support.microsoft.com/kb/2752600

1. Start Internet Explorer by using the Run as different user option, and then go to the SharePoint site.
   Note: The Run as different user option is visible if you hold the Shift key when you right-click a program icon.
2. Access the SharePoint site by using the the URL as http://siteurl/_layouts/closeConnection.aspx?loginasanotheruser=true
3. Firefox Multi User Add-On such as multifox
   https://addons.mozilla.org/en-US/firefox/addon/multifox/

Miss the Old List and Library Interface?

http://yourservername/sites/yoursite/_layouts/create.aspx

Slide Library (Manual link required)

Use this link http://yourserver/sites/yoursite/_layouts/15/slnew.aspx?FeatureId={0be49fe9-9bc9-409d-abf9-702753bd878d}&ListTemplate=2100
Thx Mike http://techtrainingnotes.blogspot.com/2012/11/finding-missing-sharepoint-2013-slide.html

Site-Collection > Web Analytics Report - Summary

http://intranet.contoso.com/_layouts/usage.aspx

Taxonomy

http://yoursite/Lists/TaxonomyHiddenList

User Profile (Hybrid)

http://mysites.contoso.com/person.aspx?NoRedirect=Yes

User Profile Photos
http://userprofielurl/User%20Photos/Forms/AllItems.aspx

Not Hidden - Important URLs

Site Collection Administration > Storage Metrics (new to SP1)
http://intranet.contoso.com/_layouts/stor.aspx

People and Groups Set Up

http://intranet.contoso.com/_layouts/15/permsetup.aspx

Web Part Maintenance Page

http://intranet.contoso.com?contents=1

Just add ? contents=1 after any page.
https://support.office.com/en-us/article/Open-and-use-the-Web-Part-Maintenance-Page-eff9ce22-d04a-44dd-ae83-ac29a5e396c2