Does Firefox have an offline throttling mode/disable network feature?

Question

I'm doing some front end work and I need to test how the program reacts when it loses a network connection. Firefox has a "Work offline" setting but that drops the connection for every tab -- I only want to disable the network connection for a single tab. Chrome has this with an "Offline" checkbox in the Network tab of the devtools that makes this really convenient.

This is what this feature looks like in Chrome:

Answer 1

~~As of at most v97, work offline can be found by clicking File > Work Offline in the top left of the window. If you do not have the File menu, try pressing alt to make it appear.

As commentators note, this apparently allows requests to localhost, and will set all of your tabs to offline mode.~~

Greg has a much better answer

Answer 2

The best solution I've found is to use "Request Blocking". Add * to match all requests. It also blocks local requests.

Answer 3

Yes we do have the option in firefox

version: 65.01

1. Click on the setting button(hamburger)

2. Then click the web developer option

3. Then click on the work offline option

Answer 4

For at least Firefox v92 (and probably previous ones) offline mode can be found by pressing ALT to bring up the File/Edit/View etc menus, then File > Work Offline.