Credibility Analyzer
Fact-check pages, selections, and shared text across browsers and apps
Credibility Analyzer fact-checks the page you are reading, a passage you highlight, or text you share from other apps.
On Chrome and Firefox it runs as a browser extension. On iPhone and Mac it is a native client with a Share Extension — select text in Safari, Messages, News, or almost any app and share it to Credibility Analyzer. Android has a native client as well.
You get a credibility score from 1 to 10, a short verdict, and claim-by-claim findings labeled verified, partially verified, unverified, or false/misleading. If Media Bias/Fact Check has a rating for the publisher, that appears as background — it never replaces the claim check.
Bring your own API key. Gemini Flash can ground the analysis in live search. Claude and GPT-6 Sol reason from their training knowledge. On Chrome you can also run Gemini Nano on-device so the text never leaves your machine.
Features
- Chrome and Firefox browser extensions
- iPhone and Mac apps with Share Extension — fact-check from Safari or any app
- Android app on Google Play
- Toolbar or selection analysis in the browser; share selected text on iOS and Mac
- 1–10 credibility score with a short verdict
- Claim-by-claim findings with verified, partially verified, unverified, or false/misleading labels
- Source links when Gemini web grounding returns citations
- Optional Media Bias/Fact Check publisher rating
- Results in the same language as the page when possible
- Bring your own Gemini, Claude, or OpenAI API key — no account with us
- Chrome-only option: on-device Gemini Nano for local analysis
Cloud models use your own API keys and are billed by Google, Anthropic, or OpenAI. Gemini Nano is Chrome-only.
Screenshots
