Posted by Andrew.
Updated on Jun 01, 2009: The current developer version of Chrome supports extensions since May 12, 2009. I developed a PageRank Extension for Chrome, it's a really toolbar extension that automatically shows Google PageRank of the current web page.
On Oct 2008, I developed a Javascript Plug-in that allows Google Chrome users to check the Alex Rank and Google PageRank of the page you are browsing. It's a bookmarklet(a bookmark containing JavaScript) in practice, you can also use it in FireFox, Safari, Inetnet Explorer or other browsers.
Because Google Chrome current version doesn't support for Google Toolbar and Alexa Toolbar, so it's a lot of vistors of PageRank Status Checker. Unfortunately, Alexa blocked my server IP since Dec 2008. When you check the PageRank, the page always shows Server Busy. :-(
I just modified the server script and released version 2.0, this version uses Widgets method to receive the Alexa data, it works fine now.
I also changed the report interface. The screenshot of version 1:
The screenshot of version 2:
Google Chrome Bookmarklet: PageRank Status Checker V2.0 released