If you want a browser extension that explains legal terms as you read them, Layman Law is a good option. The extension uses AI technology to define legal terms on any website as you read them, helping you understand what's going on with legalese. It also can simplify contracts, breaking down contract details into plain language so you don't have to pay a lawyer to explain it to you.
Another option is Detangle. It's not a browser extension, but it does parse legal documents in real time and explain them. It offers one- or two-paragraph summaries, a list of questions to ask an attorney, and flags areas that might be a problem. The system also breaks down complex text into paragraphs that are easier to understand, with security and confidentiality protections built in.