FactLens

About

FactLens is a live fact checker for Chrome that helps you verify claims while watching videos, listening to podcasts, following live streams, reviewing meetings, or analyzing images and social media posts. It detects factual claims, retrieves supporting evidence, and presents clear, source-backed results directly in your browser.

You choose the sources. We provide the sources.

Whether you're researching current events, following political debates, reviewing financial discussions, studying science, evaluating health claims, or watching educational content, FactLens helps you separate reliable information from misleading or unsupported claims without leaving the page.

Live Fact Checking:
FactLens listens to your active browser tab, transcribes speech, detects factual claims, and verifies them while the content is playing. Results appear in an easy-to-read panel so you can evaluate statements without interrupting your browsing.

Perfect for:
YouTube videos
Podcasts
Live streams
Interviews
Debates
Lectures
Online meetings
Webinars
Image & Social Post Verification

FactLens also verifies visual content.

Check:
Screenshots
Social media posts
News images
Charts
Infographics
Thumbnails
Memes containing factual claims

Receive evidence-backed verification to better understand whether the information is supported.

Source-Backed Evidence

FactLens doesn't just produce a verdict—it shows the evidence.

When Search is enabled, supporting sources are retrieved and attached to every fact check so you can review the original information yourself.

You choose the sources. We provide the sources.

Configure trusted domains, prioritize preferred websites, or block sources you don't want included in your results.

Flexible Search Options

Use the built-in Browser Search for free or configure your preferred search provider for broader retrieval and more comprehensive evidence.

Multiple Model Providers

Choose the provider that best fits your workflow.

Supports:
Google Gemini
OpenAI
Anthropic Claude
Compatible custom endpoints
Custom Endpoints

Connect compatible private or hosted endpoints for:

Language models
Speech-to-text transcription

Ideal for advanced users and organizations.

Multilingual Support

FactLens supports multilingual transcription and verification.

Automatic language detection
Manual language selection
Search using the selected language or English
Domain Controls

Take control of your evidence.

Prioritize trusted domains
Block unwanted websites
Customize where supporting information comes from
Speaker History

Save recognized speakers and organize previous fact checks by speaker.

Review discussions, interviews, debates, and meetings with case-insensitive speaker matching.

Privacy & Control

You decide:
Which model provider to use
Which search method to use
Which transcription provider to use
Which sources to trust

API keys are stored locally in Chrome Extension Storage. Search and transcription only use the providers and services you configure.

Why FactLens?
Live fact checking
Video fact checker
Podcast fact checker
Image fact checker
Source-backed verification
Browser-integrated claim detection
Browser Search support
Multiple model providers
Custom endpoints
Multilingual transcription
Domain controls
Research assistant for everyday browsing

Whether you're a researcher, journalist, student, educator, professional, or simply someone who wants reliable information, FactLens helps you verify claims faster with transparent, source-backed evidence directly inside Chrome.