List every JSON-LD and microdata type on a page, with parse errors flagged, so you know what structured data search engines can read.
How to use the Schema markup checker
- Enter a URL.
- Review the schema types found and any errors.
- Fix invalid JSON and add the types your page is missing.
Which schema to add
Organization or WebSite on the home page, SoftwareApplication or Product for product pages, Article for posts, FAQPage for real Q&A sections and BreadcrumbList for navigation. Only mark up what is visible on the page.
Reading the results
The stats show how many JSON-LD blocks were found, how many distinct types, how many microdata types and how many parse errors. Every type is listed as a tag, so you can see at a glance whether the page has, say, SoftwareApplication and FAQPage. Each JSON-LD block is shown formatted, with its types or an "invalid JSON" label and the error message. Any parse error is worth fixing: search engines skip a block they can't parse, so everything in it is lost. This check confirms the markup is readable; it doesn't test every property Google needs for a rich result.
Common schema mistakes
A trailing comma or an unescaped quote in a description, which breaks the whole block. Schema added by JavaScript after load, which won't show here and may be missed by some crawlers. Marking up reviews, ratings or FAQs that aren't visible on the page, which breaks Google's guidelines. Two plugins adding conflicting Organization blocks. The wrong type for the page, such as Product on a blog post. After fixing, run Google's Rich Results Test to check eligibility for specific features.