JSON-LD Validator — Structured Data Tester Online
Validate and preview JSON-LD structured data schemas. Check for errors, format the JSON, and copy the script tag.
Frequently Asked Questions about JSON-LD / Structured Data
- Is JSON-LD / Structured Data completely free to use?
- Yes, JSON-LD / Structured Data is 100% free with no sign-up, no watermarks, and no usage limits.
- Is my data private?
- JSON-LD / Structured Data runs entirely in your browser — no data is ever sent to our servers. Your content stays on your device.
- Does it work offline?
- Once the page has loaded, JSON-LD / Structured Data works fully offline in your browser — no internet connection is required.
- Can I analyse multiple pages or URLs?
- Yes, you can use the tool for as many pages or URLs as you need — there are no daily or monthly usage limits.
- Does JSON-LD / Structured Data work on mobile and tablet?
- Yes, JSON-LD / Structured Data is fully responsive and works in all modern browsers on desktop, tablet, and mobile.
This tool runs entirely in your browser. No data is ever sent to our servers.