JSON-LD Checker

Check and validate JSON-LD structured data on webpages

Must-Have Browser Extension for SEO & Structured Data: JSON-LD Checker If you frequently work with JSON-LD on web pages, troubleshoot Schema markup, or need instant validation after implementing structured data — this JSON-LD Checker extension is a real time-saver. 💡 One-Sentence Summary Directly "extract + validate + visualize" JSON-LD structured data from any webpage in your browser's side panel; plus AI-powered issue explanation and even zero-to-draft JSON-LD generation. ✨ Most Practical Features 🧲 Auto Detection: Automatically identifies JSON-LD presence on page load, with toolbar icon status 🪟 One-Click Side Panel: Tree view / Raw JSON / Validation summary 🧪 Built-in Validator: Catches missing fields, wrong data types, malformed URLs, and SEO recommendations 🤖 AI Check: Explains issues in existing markup clearly (saves tons of troubleshooting time) ✍️ AI Suggest: Generates production-ready JSON-LD drafts even when pages have none 🌍 Language Support: Auto-detects language with manual switching (System / English / 中文) 👥 Who Should Use This 📈 SEO / Technical SEO Specialists 🧑‍💻 Frontend Engineers & Content Developers (working with Schema/JSON-LD) 🏪 E-commerce / Local Business / Enterprise Sites (implementing structured data) 🧩 Anyone troubleshooting "Why isn't Google recognizing/showing rich results?" 🧠 Common Use Cases (Happens All the Time) 🔎 Client asks "I added structured data, why no results?": First verify what's actually on the page 🧱 Multiple JSON-LD blocks per page: Need to quickly switch between different blocks to locate issues 🔁 Just modified fields/types/URLs: Want instant validation feedback 📝 Page has no JSON-LD: Need a reference template to draft quickly