Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Does anyone have a solution (that doesn't involve editing the hosts file) to block a particular URL from FireFox?

Basic back story is that I'm trying to discipline myself. I'm spending FAR too much time over at Server Fault that I want to genuinely block the site from my work PC so that every time I find myself flicking to it during work time I can't see it, but I'd like to be able to disable it during my lunch break. (So I only spend 40 minutes a day there, rather than 4 hours).

That said I don't want to block it at the router, nor for anyone else.

share|improve this question

4 Answers 4

up vote 8 down vote accepted

The way I would do it is to install greasemonkey (if you don't already have it)

Then you could write your own script (right click the icon, add new user script). When it asks you where to apply it to, enter "http://*superuser.com/*"

The script contains:

window.location.href = "about:blank";

During your lunch-break you simply de-activate that script from greasemonkey

share|improve this answer
Greasemonkey... I haven't seen this one before. I'll take a look. –  Mark Henderson Aug 31 '09 at 22:23
Well, I got it working, but I've no idea what it wants by "namespace" so I entered junk, and it seems to work ;) –  Mark Henderson Aug 31 '09 at 22:27

Use AdBlock Plus to block URLs from the browser

share|improve this answer

2 firefox extensions - leechblock and blocksite

share|improve this answer

Block it using Parental Controls! :)!

share|improve this answer
He said at browser level, not system level. –  Henri Watson Aug 31 '09 at 22:51

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.