The Onion Notifier

Name: The Onion Notifier
Rating: 3 (2 reviews)
Author: Stefan Sundin

Notify you when you visit a website that offer an .onion domain. Only intended for use with the Tor Browser based on Firefox 52 (version 7.0a3 and later).

Download

Install

Features & Capabilities

There is a default database, but it can be edited by going to the addon options.

Suggest changes to the default database by filing an issue at: https://github.com/stefansundin/the-onion-notifier

To stop notifications for the duckduckgo search engine, consider installing this search engine that directly uses DDG's onion domain: https://addons.mozilla.org/firefox/addon/ddg-onion/

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

0.1.1resigned1 Last updated: 2024-04-25

Version code:

5728202

Creation date:

2017-05-22

Risk:

Permissions:

Size:

22.26KB

Email:

fi*****@stefansundin.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 30,546 ▼ 1,142

Other rankings

#104 in notion keyword 54 ▼ 3

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Stefan Sundin

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/the-onion-notifier/

Email:

fi*****@stefansundin.com

Website:

https://github.com/stefansundin/the-onion-notifier

User Reviews

The add-on ignores the http-equiv="Onion-Location" meta tag in the HTML head and uses a static collection of manually collected onion addresses instead. So, you're only notified of very few websites' onion services. Moreover, the few notifications that you receive are unhelpful because they suggest you v2 onion domains which were deprecated years ago and don't work anymore (which the add-on doesn't know). That means, the add-on is completely useless currently.

by Pi*****, 2026-04-27

View all user reviews ›

Is The Onion Notifier 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.

The Onion Notifier requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******

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.

The Onion Notifier 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.
Medium **** ********* *** *** **** *******
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