Fact-checking President-elect Donald Trump can be a chore, even for people paid to do it. The Washington Post wants to make it less so, with add-ons to the popular Chrome and Firefox browsers. The browser extension, RealDonaldContext, is available from the Chrome Web Store or the Mozilla Foundation. After installation, any time you click on a tweet on the @realdonaldtrump account, any fact-checking the Post may have done also will be displayed. The fact-checking includes adding context.