NewsGuard is a rating system for news and information websites. It is accessible via browser extensions and mobile apps. It rates the websites' trustworthiness on a scale of 0 to 100, based on whether they adhere to editorial and journalistic standards. NewsGuard Technologies Inc., the company behind the tool, also provides services such as misinformation tracking and brand safety for advertisers, search engines, social media platforms, cybersecurity firms, and government agencies.