Real-time fact checking

Know what's true, as you read.

A browser extension that checks whether claims are accurate in real time, using Claude with live web search. Verify text, video audio, and files, right where you find them.

Private by design. Sign in and start checking, no setup.

One extension, five ways to check

From a highlighted sentence to a whole video, get a grounded verdict with sources.

🔎

Text and pages

Highlight any passage or scan a full article. Claims are verified with web search and rated on a true to false scale.

🎧

Live video audio

Fact-check a YouTube or any video tab while it plays. The audio is transcribed and spoken claims are checked as they happen.

📄

Documents and images

Upload a PDF, image, or text file to check the claims inside it, or ask questions grounded in the file.

🧭

Sentiment analysis

Paste comments, tweets, or reviews to read the overall mood, the positive to negative split, and the themes driving it.

🛡️

AI origin detection

Check whether an image or document was made by AI, using verifiable Content Credentials where present, with an honest likelihood otherwise.

💬

Corrections and follow-ups

False claims come with the accurate fact, and you can ask follow-up questions about any result right on the card.

See it in action

A calm, focused interface built around a single idea: is this true?

Fact-check feed with verdict cards Verdicts on a true-to-false scale, with sources.
Assets tab with AI origin detection Check documents and detect AI-made images.
Sentiment analysis result Read the mood of a pile of comments in seconds.

How it works

No account, no server in the middle. You are in control the whole way.

01

Install and go

Add the extension and open the popup. No account setup or configuration to wade through.

02

Pick what to check

Highlight text, scan a page, listen to a video, or upload a file. You choose every time.

03

Get a grounded verdict

Claude searches the web and returns a rated result with sources, and the correct fact when something is wrong.

Private by design

Your check history lives only in your browser. Content you check is used only to return your result, forwarded to the AI providers that power the checks (Anthropic, and Deepgram for audio). We never sell it, and there is no ad tracking. See the privacy policy for the full picture.