Roomba Forecaster ( install ) ( GitHub )

Roomba Forecaster is a user-script that shows the question's status with respect to being deleted by Roomba.

This script adds a "roomba" status line under "viewed"/"active", in the top-right of question pages, which shows:

  • If Roomba will delete the question
  • How long until the question is deleted
  • Why the question won't be deleted (by default, displayed in a tooltip)
  • If you down-voting on the question or answer(s) will qualify the question for Roomba

You can click on the "roomba" status line to open an options dialog to change display settings.

The "roomba" status line

Roomba Forecaster

Where it is on the page relative to the question

Roomba Forecaster location on the page

Why it won't Roomba: tooltip (default) or always visible (optional)

The reasons the question does not qualify for the three different Roomba tasks is included in a table. The table is, by default, displayed in a tooltip when the mouse hovers over the "roomba" status line:

Alternately, the table can be always visible by selecting the appropriate display option.

Show if your down-vote(s) get the question Roomb'ed (default)

In addition, the default is to display if you down-voting on the question and/or answer(s) will qualify the question to be Roomba'ed.

downvote question will roomba

downvote answer will roomba

Number of days to deletion

If the question will be deleted by Roomba, then the number of days until it is deleted is displayed, along with if it is a daily, or weekly Roomba task.

One Roomba task runs daily:
daily roomba

Two Roomba tasks run weekly:1
weekly roomba


Clicking on the "roomba" status line will open an options dialog where you can select what is displayed. The following GIF shows how the display looks with the various different options:

Roomba Forecaster options

Clicking on the Close button will keep the selected options for use on this page only. Save will store the options for use on all pages. Cancel abandons any changes you have made to the options.

Short descriptions in the status line (optional)

The optional short descriptions in the "roomba" status line are cryptic:
short reasons

The best way to learn what they mean is to match them up against what is displayed in the larger table (either as a tooltip, or always displayed).
short reasons

Getting the code

Install from GitHub

It's a userscript. Use a userscript manager.
This is a userscript, so you will want/need Tampermonkey (closed source, most widely available), Violentmonkey (open source), or other userscript manager.

Unfortunately, I can no longer recommend Greasemonkey (open source; Firefox only). I try to make sure that my scripts are compatible with Greasemonkey 4.X (GM4), but it lacks features which some of my scripts use, but, for my scripts, I try to make it that their lack just degrades performance. The change to Greasemonkey 4.X was required by Firefox moving to only WebExtensions based add-ons. However, there were significant changes made to Greasemonkey which broke backward compatibility (and there's still a significant lack of functionality). There is no intent to fix backward compatibility. As a result, using Greasemonkey 4.X will result in ongoing issues with older scripts which have not been updated to be used with it. Thus, while I used to strongly recommend Greasemonkey 3.X due to a significantly better security environment (gone in GM4), I recommend against using Greasemonkey 4.X vs. the alternatives.

The source code is on GitHub

Please file any bugs/feature requests as issues there.


You can contact me through Stack Exchange comments or chat.

If there are problems with, or feature requests for, this userscript, please file an issue on GitHub. While GitHub issues are preferred for bugs/feature requests, making sure I get the information (e.g. comments/chat) is sufficient.


Roomba Forecaster has been tested on Chrome, Firefox, Firefox ESR, Firefox for Android, Opera, and Edge. It should also be compatible with other browsers.

Compatibility Notes

The tooltip is styled to look like a native tooltip in the browsers which were tested: Chrome, Firefox, Firefox ESR, Firefox for Android, Opera, and Edge. Thus, the tooltip will look slightly different in in each browser. The images above are from Chrome.


Roomba Forecaster's code is released under the MIT License. Earlier versions of Roomba Forecaster's code were released under CC BY-SA 4.0, the international version of the license used for all contributions to Stack Exchange.

This is a fork of RoombaForecast.

1. Actually, four Roomba tasks run weekly. The other two affect only questions which have been migrated to another Stack Exchange site (leaving a migration stub) or migrated from another site and rejected. While the script does detect these, the Stack Exchange system automatically redirects the page to the site where the question currently exists. Thus, unless something changes in how Stack Exchange displays such questions, you add the ?noredirect=1 parameter to the URL, or are a moderator on the site where the migration stub exists, it's unlikely you will see one. OTOH, you could, of course, go searching for rejected migrations which have not yet been deleted.

Note that there are some old, migrated questions that have been closed on the destination site, which should have triggered their rejection. While these fit the documented criteria for Roomba deletion, they do not get deleted. If the question has not been deleted after twice being eligible for deletion when Roomba ran, then Roomba Forecaster assumes that the question is not actually eligible to be Roomba'd. If the documentation is updated to indicate the actual criteria, then the script will be updated.

  • Related thread on Software Recommendations: Userscript or extension to indicate when a Stack Exchange question is scheduled for auto-deletion – user43888 Jul 6 '17 at 23:41
  • Does this work correctly on all Stackexchange sites? I'm guessing different Stackexchange sites may have slightly different Roomba rules? – Gaurang Tandon Mar 29 '18 at 10:31
  • @GaurangTandon, To the best of my knowledge, the Roomba is the same for all sites. It should work correctly on all English sites. However, you make me realize that it will not currently work correctly on the non-English SE sites (unless the user sets a hidden option). I will update it so it will work on those sites too. Thanks for getting me to think about that. – Makyen Mar 29 '18 at 10:58
  • @Makyen: Oh I'm glad to be of help. Though thanks to you for making this in the first place! :D – Gaurang Tandon Mar 29 '18 at 11:10
  • Oh, one thing more, I just realized that the rules for the roomba user are different on the child meta sites as compared to the corresponding main site. So does this script take those into account? Or does it work on meta questions the same way it does on main site ones (which shouldn't happen)? – Gaurang Tandon Apr 17 '18 at 3:00
  • 1
    @GaurangTandon Thank you for pointing it out. The only difference I see at this point is that the 365-day Roomba, RemoveAbandonedQuestions, is not active on Meta sites. This is a change from when the script was written (or at least it's a change in the Roomba description documentation). I will update the script to take that into account, but, no, it does not currently account for that on meta sites. – Makyen Apr 17 '18 at 4:37
  • It's always been the case that RemoveAbandonedQuestions doesn't run on meta sites. It's just never been properly referred to in the documentation until I prodded them to update it. – gparyani Jun 13 '18 at 18:58
  • @gparyani I appreciate knowing that. But, without it documented and without access to the code-base there's no way to know about such criteria, or lack thereof. I'm glad you got them to update the documentation, but from the point of view of he script, it's a change in functionality. Note that there's at least one other undocumented criteria which must be met. Because of this, if the question has not been removed by the time the question would have twice otherwise met the Roomba criteria when the Roomba ran and is still not deleted, the script assumes the question won't be Roomba'd. – Makyen Jun 13 '18 at 19:23
  • It's also worth mentioning that migration stubs do not redirect if you are a moderator on the origin site. – gparyani Jun 13 '18 at 20:28
  • How on earth do you get Chrome to let you install this!? Using defaults write com.google.Chrome ExtensionInstallSources ... didn't work. Drag-n-drop on chrome://extension didn't work. – John Hascall Jul 17 '18 at 20:03
  • @JohnHascall The easiest way is to have a userscript manager extension installed. The most common in Chrome is Tampermonkey. Once that's installed, you should just be able to click on the Roomba Forecaster install link. – Makyen Jul 17 '18 at 20:36
  • @Makyen thanks, that worked. (Dear Google, I think 15 sets of training wheels on Chrome might be quite enough.) – John Hascall Jul 17 '18 at 20:51

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