JSON-LD structured data block contains invalid JSON

JSON-LD is a block of code added to a page to describe it in a structured way that search engines and AI tools can read, for example marking up a business's opening hours or a product's price. This check validates that JSON-LD blocks are written as correct, parseable JSON. On this site, one or more JSON-LD blocks contain invalid JSON, often from a stray comma, an unquoted key, or curly "smart quotes" left over from copying and pasting text. Malformed JSON-LD is silently ignored by Google, ChatGPT, Perplexity, and Gemini, so it provides zero benefit despite the time spent adding it, and you will not get any warning that it isn't working unless you actively check it with a validator. Your developer should validate every JSON-LD block using a tool such as the schema.org validator or Google's Rich Results Test, then correct the specific syntax error it flags. This is usually a quick fix once the broken block is identified, around thirty minutes.