# FactoidL

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

Canonical page: [https://chrome-stats.com/d/factoidl](https://chrome-stats.com/d/factoidl)

## Overview

- **ID:** `factoidl`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** FactoidL
- **Category:** feeds-news-blogging,search-tools
- **Version:** 2.6.2
- **Last updated:** 2026-09-02
- **First published:** 2019-08-29
- **Size:** 146 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/factoidl/)
- **Website:** [https://github.com/AlexanderKidd/FactoidL](https://github.com/AlexanderKidd/FactoidL)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/factoidl/privacy/](https://addons.mozilla.org/firefox/addon/factoidl/privacy/)

## Description

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: <a href="/" rel="nofollow">factoidlproject@gmail.com</a>

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

Release Notes (Aristotle, FactoidL v2.6):
<ul><li>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).</li><li>Common algorithm/functionality code is now in factoidl-common.js files.</li><li>Updated visual assets to be based off of a crisper SVG logo.</li><li>Repaired broken and stalling API requests to default source (Wikipedia). Including revising service worker tasks.</li><li>Optimized topic search by weighted term set of page title + all scraped factoids, with fallbacks on first sentence and then page title.</li><li>Added verification bar that shows the amount of verified, verified false, and unverified factoids.</li><li>Various minor code fixes like upgrading dependencies and script security. Upgrade to Manifest V3 for extensions as well as fixed extension functionality between tabs.</li></ul>

## Rankings

- #139,897 — Overall
- #220 — fragment

## Permissions and access

### Permissions

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

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/factoidl)