PRUUF Score Firefox

PRUUF Score

PRUUF scores the article you're reading on eight measures of how it presents the truth — factual accuracy, sourcing, omission, manipulation and more. Every score shows the claims it checked and the sources it used, so you can judge the judgment.

Features & Capabilities

Most tools tell you a source is trustworthy. PRUUF tells you what this article does.

Click the icon on any news article and you get a score out of 100, plus the reasoning behind it.

WHAT IT MEASURES

Eight criteria, scored independently and weighted into one result:

• Factual accuracy — claims checked against sources found on the live web • Source veracity and transparency — who is cited, and can you follow it • Omission of relevant facts — what a reader would need that isn't here • Manipulative techniques — loaded framing, false urgency, selective quotation • Logical integrity — do the conclusions follow from what's presented • Internal consistency — does the article contradict itself • Fact vs. opinion — is the line between them clear • Authorial intent — is this reporting, persuasion, or something else

WHY YOU CAN TRUST THE NUMBER

Because you can check it. Every analysis shows which claims were examined, which sources were consulted, and where the reasoning holds or breaks down. Claims that couldn't be verified are marked as unverified rather than quietly counted as true.

Research runs at the moment you ask, against the live web — not recalled from a model's training data. Recent events are handled correctly.

WHAT IT WON'T DO

PRUUF doesn't tell you what to believe, and it doesn't rate outlets. A careful piece in a partisan outlet scores well; a sloppy one in a respected outlet doesn't. It reads the article in front of it.

PRIVACY

Article text is sent to PRUUF's servers to be analysed — that's how the scoring works. Nothing else about your browsing is collected, and nothing is read until you click the icon.

Free to use with a daily limit. PRUUF Pro removes the cap.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Truespire Systems
Daily users:
1
Version:
1.33.0 Last updated: 2026-09-05
Version code:
6457241
Creation date:
2026-06-11
Firefox add-on GUID:
dygscore@truespire.ai
Firefox add-on numeric ID:
3024815
Firefox on Android:
No
Risk:
Moderate risk impact High risk likelihood
Permissions:
Host permissions:
  • <all_urls>
  • https://truespireindex.web.app/*
Content scripts matches:
  • <all_urls>
Size:
150.82KB
Email:
he*****@truespire.ai
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-07
Compare stats and ranking:

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:
Truespire Systems
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/pruuf-score/
Email:
he*****@truespire.ai
Website:
https://www.truespire.ai

Is PRUUF Score 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.

PRUUF Score requires a few sensitive permissions. 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.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • 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.

PRUUF Score is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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