Add Schema Checker to your device

Use your browser menu to install this website as an app or add it to your home screen.

Phase 4A • Browser-local tools

Free Schema & JSON-LD tools

Sixteen free browser-local tools for generating, converting, comparing and checking structured data and metadata. No login or data upload.

🔒 Browser-local: pasted data and uploaded CSV files stay on this device. These tools do not submit your input to a server, create an account, or save your source code in a database. “Check this result” transfers output within the current browser tab and removes it after loading.
Generate

JSON-LD Generator

Build JSON-LD for eleven Schema.org types using real field values, see live local checker feedback, and copy or download the output.

Open tool →
Generate

Schema Type Finder

Describe your page or choose a subject to find offline Schema.org types, with optional Google feature and rich-result candidate filters.

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Report

@graph / @id Visualizer

View labeled JSON-LD nodes, directed @id relationships, duplicate IDs, unresolved references and isolated nodes in a browser-local diagram.

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Report

SERP Preview Tool

Preview page titles and descriptions on desktop or mobile with advisory length and pixel-width checks; no Google appearance guarantee.

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Report

Agency Report Generator

Build branded, browser-local client audit reports from supplied findings with Before/After notes, printable HTML and PDF via browser print.

Open tool →

Connected to the existing Schema Checker

Generate or convert structured data on its own dedicated page, then choose Check this result to send it to the main checker in the same tab. This temporary handoff is not sent to a server or saved to an account. Use the checker for syntax, dated Google guidance and cautious safe-fix previews. A successful local check does not certify a rich result.

How these tools differ

Choose from JSON-LD generators and converters, schema diagnostics, meta/social tag checks, SERP preview, robots.txt testing, XML sitemap tools and llms.txt generation and validation. Choose the workflow that matches your task rather than trying to turn every input into a Product.

We are here to help

Need help with a tool?

Found a bug, unexpected result, or problem downloading a corrected file? Contact our support team. We welcome clear reports and suggestions.

Have a suggestion for improving or changing any of our tools? Please don't hesitate to contact our support team. We'd be happy to hear from you. Thank you for your feedback!

Get Edge ExtensionMicrosoft Edge · Coming Soon
Get it fromMicrosoft StoreComing Soon for Windows

Schema Support Checker Edge extension and Windows app are coming soon.

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From the same owner

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Imran Saeed
Developed by Imran Saeed

Independent tools for freelancers, developers and website owners.

Find structured data issues, understand Google guidance and apply safe fixes on your device.

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