San Francisco State University
Library Home page Welcome to your university library

J. Paul Leonard Library

Find Research Help Services About
site navigation
display graphic

LibX Firefox Extension (and Explorer and Chrome!)


We've developed a library plug-in for the FireFox web browser called LibX that allows you to search for items in the Library collections from any page, no matter where you may be browsing.

You can use it to look up books in our catalog InvestiGator, or look up our 200 databases and 60,000 electronic journals, or search Google Scholar. But wait, there's more.

LibX Toolbar

LibX embeds a link   on certain kinds of web pages, like Amazon or Barnes & Noble pages, NY Times book reviews, Google and Yahoo, Worldcat and many others. This link will search for the book on the page in InvestiGator! It enhances any ISBNs it finds to search for the book. It also enhances PMIDs and DOIs (if you know what those are) to search for the full text article among our databases. It provides contextual menus (Windows: right-click or Mac: control-click) for any selected text on any web page to search that text as a keyword, author or title in InvestiGator, Google Scholar, WorldCat and elsewhere.

Install LibX

The link below will take you to a page that will explain LibX in more detail, and allow you install it. We think it's really cool, and we sincerely hope you find it useful.

LibX for Google Chrome! August 2012: Google has changed their security policy, and LibX must be installed a new way.


Background, from:

As of 7/31, Google changed how to install extensions in Google Chrome. Previously, LibX users could click on a link with a .crx file and the extension would be downloaded and installed. According to the new policy, users can no longer simply click.

Users now have to download the .crx file, save it into a folder, and then drag-and-drop it into the extension tab.

“Steps on adding extensions from other websites”, from:

We recommend you only add extensions from other websites that you trust. In Chrome, you can follow these steps to add the extension:

  1. Download the extension file from the website and save it to your computer.
  2. Click the wrench icon on the browser toolbar.
  3. Select Tools > Extensions.
  4. Locate the extension file on your computer and drag the file onto the Extensions page.
  5. Review the list of permissions in the dialog that appears. If you would like to proceed, click Install.


1. Click the tiny LibX 2.0 button to the right of the address bar. You'll be asked to search for a version.
Type Leonard to select our version.

Type Leonard to select our version

2. Once installed, you'll see our icon Leonard Library iconto the right of the address bar. Click the icon to open the LibX extension. Click the underlined source (default is InvestiGator) to select where to search.

Click source to select where to search

3. Click on the field label below Search (Keyword is the default) to select what to search. If all the choices don't appear, click on the Preferences link on the left and the Context Menu tab on the resultant page to enable searching in all available fields.

Click field to select what to search

SF State Home
J. Paul Leonard Library, 1600 Holloway Avenue, San Francisco, CA 94132 - 415.338.1854 -
JPLL uses valid XHTML 1.0 Transitional, and valid CSS.