Features & Capabilities

Tools for Substack!

Features:

  • Quick Templates: Easily insert donate buttons, custom linebreaks, or any other content into the post editor with the Templates toolbar (New in v1.3.0)
  • 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!
  • Note Exporter: Save all notes you've ever posted into a single file. Now supports exporting in CSV format (v1.3.0)
  • 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.

This extension also inserts a toolbar at the top of certain substack pages, like your profile page, and the post editor. You can turn these toolbars off at the click of a button in the Extension settings.

Enjoy!

User Growth & Download Statistics

Manifest V2 Add-on
By:
Futuresight
Daily users:
46 6
Rating:
4.00
(1)
Version:
1.3.0 Last updated: 2026-02-22
Version code:
6157599
Creation date:
2025-02-07
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • *.substack.com
  • substack.com
Size:
373.92KB
Email:
bl*****@kircher.tech
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-15
Compare stats and ranking:

Other platforms

Chrome
BlockedStack (v1.3.0)
264 5.00 (3)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Futuresight
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/blockedstack/
Email:
bl*****@kircher.tech
Website:
https://chemicalmind.substack.com/p/tools

Permission Change History

2026-02-22: Version 1.2.0 → 1.3.0
Add Permissions: https://*.substack.com/*

Is BlockedStack Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

BlockedStack requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
  • Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
  • Low ******* ****** ** *** ********* ******** ************
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

BlockedStack is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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