StackUnderflow is Greasemonkey/Tampermonkey (or compatible) user script that aims to improve your experience with StackOverflow.com.

Once it runs, you should easily notice additional icons added to the info box of each question or answer:

New icons

  1. indicates whenever you consider this user your favourite (starred) one starred or just regular one regular user.
  2. indicates whenever user is on your blacklist blacklisted or not not blacklisted

To toggle state of each feature, simply tap corresponding icon. If unsure what would happen, hoover mouse pointer over it to see the tooltip with more information.

Note: when you blacklist starred user, s/he will be only considered blacklisted from now on, but star flag will not be be altered, which means once user is removed from blacklist, s/he become starred again. If you do not want this to take place, you must remove star manually prior blacklisting.

All questions asked by your favourite users will be visually marked:

starred user question

You also see similar notice for questions placed by blacklisted users:

blacklisted user question

If question is already answered, similar notice will be shown and accepted answer will be additionally highlighted:

accepted answer highlight


To enjoy StackUnderflow you need to

  • install user script host extension:
  • install StackUnderflow script by clicking here - script shall be automatically installed and ready to use.


As for now configuration features are limited and there's no configuration dialog yet. Some features are however configurable directly in the script, so once installed, open script for edit and you can find all cfg_.... parameters at the beginig of the script. Tweak as you need, save and reload target StackOverflow page.


I created this script with my needs in mind, however I hope you find it useful too. I am also open for new features ideas or code! If you find a bug, feel free to report it or even send pull request. If you miss a feature, use GitHub issues tracker to let me know.



Marcin Orlowski


  • v1.0.0 (2016-01-25)

    • Added option to disable user blacklist/favlist action buttons
  • v0.5 (2015-09-30)

    • Augmented question index with star, blacklisted icons (if set)
    • Augmented users' profile page
    • Fixed script not working when accesing StackOverflow on non SSL secured connection
  • v0.4 (2015-08-14)

    • Script was not working when user was not signed in to SO
  • v0.3 (2015-08-11)

    • Added "question too old" warning feature (default threshold is 30 days)
  • v0.2 (2015-08-10)

    • Added action icons
    • Fixed handling of users answering own question
  • v0.1 (2015-08-09)

    • Initial release


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