Library Hub Compare

Library Hub Compare allows you to analyse your library collections and compare them with those of other institutions which contribute their records to the National Bibliographic Knowledgebase.


For queries about accessing Library Hub Compare, contributing your records, or for help with using the service, please email the NBK helpdesk in the first instance at

Privacy and cookies


Please see the Jisc privacy notice for information about how we manage personal data (at

If you have any questions about this please email


Cookies are small text files that are stored by your web browser. They have a variety of uses including making web sites work more effectively and recording details of web site usage.

To find out more about cookies and how to manage them visit All About Cookies or You will find information about how to manage cookies on the major web browsers.

Library Hub Compare uses cookies for three main reasons:

  • To manage your access to the service
  • To provide support for your use of the site
  • To record general usage information to help us understand our users and ensure we are providing the right support. This allows us to ask questions such as: 'last month what proportion of Library Hub Compare searchers used a mobile device such as an iPad?'

Details about Library Hub Compare cookie use are given below.

Cookies for Access Management

This cookie is used on Library Hub Compare to manage access to the service.

_shibsession Unique random number identifying a successful login.
This cookie is to determine whether the user is logged in via Single sign-on
Session (When the web browser is closed)

Cookies for Functionality

These cookies are used on Library Hub Compare to improve your website experience.

SID Session ID:
Your session ID is recorded in a cookie. This ties together all the elements of your search session, within and between sessions, making the search process more efficient.
1 year
cookiebar This cookie is used to record your acknowledgement of our use of cookies 1 year
SESSION For remembering user preferences 1 year
SSESS Allow the page to provide you with content

Cookies for Measuring Website Usage (Google Analytics)

Library Hub Compare and Jisc use Google Analytics to gather information, which helps Jisc understand how the service is being used and identify areas for improvement. You can find details about how Google uses data at: If you wish you can opt-out of being tracked by Google Analytics across all websites, see:

Details of general Jisc cookie use is given at

_ga Used to distinguish users. 2 years
_gid Used to distinguish users. 24 hours
_gat Used by Google Analytics to minimise impact on the site's performance 1 minute