Compared to Firefox 2, Firefox 3 uses a new bookmark manager. Bookmarks are not stored in the bookmarks.html file (in the directory of your Firefox profile), rather they are stored in ?SQLite database (places.sqlite).
If the performance is much better, we can not directly read this file (e.g. in another browser). However, you can ask Firefox 3 automatically export bookmarks to bookmarks.html.
Here’s how:
In the address bar of Firefox 3, type about: config
A warning will appear: Click on “I will care, I promise!”
In “Filter”, type autoexport, then double-click the “browser.bookmarks.autoExportHTML” to pass the value to true.
Firefox can now automatically export your bookmarks to the bookmarks.html file for each closure Firefox
Oh okay, thats for doing it on regular purpose, I just checked the Bookmark Manager and found out that I could export it as HTML but yeah thanks for the tip, it becomes really easy to take backups when sometimes you can’t access the browser.
You can use FEBE addon which takes the backup of everything in your firefox which includes addons, bookmarks, history, passwords etc. Everything into one file. It makes it real easy to take the backup of Firefox