QuickTruth

QuickTruth adds small fact-check buttons next to Facebook posts so you can check a claim before you share it. THREE TOOLS, ONE CLICK EACH • Check for known rumors — looks up the post in Cofacts and the Taiwan FactCheck Center and shows an existing fact-check when one matches (matches are filtered for relevance, so unrelated reports are not shown). • AI quick verify — a short three-point check (core claim, fact check, verdict) written by Chrome's built-in AI. • AI semantic analysis — a fact-check category plus an emotional-manipulation profile across seven dimensions. You can copy the result card as an image to share. PRIVATE BY DESIGN • The two AI tools run on your own computer using Chrome's built-in on-device AI (Gemini Nano). Post text is not sent to any server. • The rumor lookup only runs when you click the button, and sends the post text to Cofacts and the Taiwan FactCheck Center — nothing else, and no account information. • No sign-in, no ads, no analytics. The developer runs no servers. REQUIREMENTS • Chrome 138 or later with Chrome's built-in AI (Prompt API / Gemini Nano) available. The AI tools need a supported computer; the first use may download the model. The rumor lookup works without it. • The interface follows your Chrome language: Traditional Chinese or English. TIPS • Expand the full post ("See more") before checking for better results. • AI output can be wrong, especially on small on-device models. Treat it as a hint, not a ruling, and follow the links to the original fact-checks. SOURCES Fact-checks come from Cofacts (https://cofacts.tw, CC BY-SA 4.0) and the Taiwan FactCheck Center (https://tfc-taiwan.org.tw). Sources are credited in the extension. QuickTruth is an independent extension and is not affiliated with, endorsed by or sponsored by Facebook, Meta, Cofacts, the Taiwan FactCheck Center or Google. Facebook is a trademark of Meta Platforms, Inc.