PageRank Updates and Exports history
Some terminology used in this list:
- Toolbar Export: Google exports the actual PageRank values to the toolbar for public viewing once in every while.
- Directory Export: Google exports PageRank values to the Google directory every few months.
- Backlink Update: A backlink update affects the backlinks displayed in webmaster tools as well as the "link:" command.
- Alogarithm Update: A change in alogarithm will cause some changes to the overall results.
Current trends
Last update: 1 May 2008
Duration between updates: About 45 days
Next estimated PageRank update: Oct 2008
Note: There is only information dating back to 2005, with the most accurate being the times closest to today.
If you would like to suggest an update, please contact 
gmail.com
| Year | Month | Description | |
| 2008 | May | Toolbar Export | |
| 2008 | February | Toolbar Export | |
| 2008 | February | Backlink Update | |
| 2008 | February | Directory Export | |
| 2008 | January | Toolbar Export | |
| 2008 | January | Backlink Update | |
| 2007 | December | Removed supplementary index | |
| 2007 | December | Toolbar Version 5 (beta) for Internet Explorer | |
| 2007 | December | Sub-domains treated as Sub-directories | |
| 2007 | December | Backlink Update | |
| 2007 | October | Toolbar Export + Backlink update | |
| 2007 | October | Directory Export | |
| 2007 | April | Toolbar Export + Backlink update | |
| 2007 | January | Alogarithm update | |
| 2007 | January | Toolbar Export + Backlink update | |
| 2007 | January | Directory Export | |
| 2006 | December | Toolbar Version 3 (beta) for Firefox | |
| 2006 | November | Backlink update | |
| 2006 | September | Toolbar Export + Backlink update | |
| 2006 | July | Toolbar Export + Backlink update | |
| 2006 | April | Toolbar Export | |
| 2006 | April | Toolbar Version 2 for Firefox | |
| 2006 | Febuary | Toolbar Export + Backlink update | |
| 2006 | January | Toolbar Version 4 (beta) for Internet Explorer | |
| 2005 | December | Directory Export | |
| 2005 | October | Toolbar Export + Backlink update | |
| 2005 | October | Alogarithm update | |
| 2005 | September | Directory Export | |
| 2005 | July | Toolbar Export + Backlink Update | |
| 2005 | June | Directory Export | |
| 2005 | June | Backlink Update | |
| 2005 | May | Directory Export | |
| 2005 | April | Toolbar + Directory Export + Backlink Update | |
| 2005 | March | Backlink Update | |
| 2005 | March | Directory Export | |
| 2005 | February | Toolbar Version 3 for Internet Explorer | |
| 2005 | February | Directory Export | |
| 2005 | Febraury | Backlink + Alogarithm Update | |
| 2005 | January | Directory Export | |
| 2005 | January | Toolbar Export + BackLink Update |
This page shows a list of Google PageRank updates. This list only shows information about visible PageRank which is available for public eyes (i.e. from the Google Toolbar or the Google directory).