FactoidL

Name: FactoidL
Author: FactoidL

By: FactoidL Add-on

Checks the accuracy of webpage content based on other web sources.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-09-08

Version:

2.6.2

Last updated: 2026-09-02

Features & Capabilities

FactoidL is committed to being an open-source tool that keeps fact-checking transparent, free, and easy to use.

For feedback or contributing to the project, please contact: factoidlproject@gmail.com

And check our GitHub page for more info and other platforms.

Release Notes (Aristotle, FactoidL v2.6):

Aristotle Strategy: Tighter specification of article/unimportant words and regex of negation. Slight co-reference resolution (2-3 fragments of text apart if original factoid can't resolve itself).
Common algorithm/functionality code is now in factoidl-common.js files.
Updated visual assets to be based off of a crisper SVG logo.
Repaired broken and stalling API requests to default source (Wikipedia). Including revising service worker tasks.
Optimized topic search by weighted term set of page title + all scraped factoids, with fallbacks on first sentence and then page title.
Added verification bar that shows the amount of verified, verified false, and unverified factoids.
Various minor code fixes like upgrading dependencies and script security. Upgrade to Manifest V3 for extensions as well as fixed extension functionality between tabs.

User Growth & Download Statistics

Add-on

By:

FactoidL

Daily users:

Version:

2.6.2 Last updated: 2026-09-02

Version code:

6455233

Creation date:

2019-08-29

Firefox add-on GUID:

{5ea406f0-f92a-474f-a4e8-c91983d87de3}

Firefox add-on numeric ID:

2596884

Firefox on Android:

Yes

Risk:

Permissions:

activeTab
https://ajax.googleapis.com/
https://*/
*://*/*

Size:

146.22KB

Email:

fa*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-09-08

Compare stats and ranking:

Ranking

# 139,897 ▼ 1,095

Other rankings

#220 in fragment keyword 10 ▼ 8

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:

FactoidL

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/factoidl/

Email:

fa*****@gmail.com

Website:

https://github.com/AlexanderKidd/FactoidL

Is FactoidL 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.

FactoidL requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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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.

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

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****