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Preview of BlockedStack

BlockedStack by Futuresight

Tools to improve your Substack experience

4 (1 reviews)4 (1 reviews)
29 Users29 Users
You'll need Firefox to use this extension
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Extension Metadata

Screenshots
A screenshot of BlockedStack, showing the main pop-up screen with number of users blocking (74) and number of profile details found (40)A screenshot of BlockedStack, showing the main pop-up screen with the Notes Exporter instructions.A screenshot of BlockedStack, showing the new Notes Filter function
About this extension
Tools for Substack!

Features:
  • Note Filter: Hide notes from your feed based on certain words and phrases. Now you can finally get rid of all the Sabrina Carpenter spam! (New in v1.2.0)
  • Note Exporter: Save all notes you've ever posted into a single text file
  • Block Checker: See how many people have blocked you, for funsies

How to use:

Simply install the browser extension, and visit the Substack homepage. Once there, click the BlockedStack button on your toolbar to open it (it's a tiny pink snail), and try out the buttons. Most of these involve long-running operations, so you'll have to be patient while it does its thing.

Enjoy!
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Permissions and dataLearn more

Required permissions:

  • Download files and read and modify the browser’s download history
  • Display notifications to you
  • Access your data for substack.com
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
Version
1.2.0
Size
210.7 KB
Last updated
7 days ago (Sep 5, 2025)
Related Categories
  • Feeds, News & Blogging
  • Privacy & Security
  • Social & Communication
License
All Rights Reserved
Version History
  • See all versions
Tags
  • content blocker
  • download
  • social media
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Release notes for 1.2.0
Added a Notes Filter function, to filter out notes from your feed that match your specified keywords and phrases. Also improved overall performance, and added progress indicators for the note export function.
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