FactLens

Live evidence backed fact checking for videos, podcasts, streams, meetings, and images.

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.