Schema Markup Validator for Rich Result Preview & Structured Data Testing
Use Wranker’s schema markup checker to inspect a public URL or pasted JSON-LD. Review detected schema types, errors, warnings, and suggested fixes before or after implementation.
2 Input Modes
Public URL or pasted JSON-LD
Errors & Warnings
Detected issues and suggested fixes
Simulated Previews
Illustrative cards for supported types
Schema Markup Validator & Structured Data Checker
Use this schema markup tester to check a public URL or pasted JSON-LD. Choose the checks and feedback to include.
Types are identified automatically from the supported markup found in your input.
Validation & Result Settings
Choose which checks run and which details appear in the results.
Check detected items against Wranker’s supported type-specific requirements.
Highlight missing or incomplete recommended properties where applicable.
Explain detected issues and suggest corrections to review before implementation.
Show an illustrative preview for supported types. This does not confirm Google eligibility or display.
Review the detected structured data in the Raw Data tab.
3 free checks per day. CAPTCHA may apply.
What the Schema Markup Checker Reviews
Use Wranker’s structured data validator to review detected schema types, JSON-LD syntax, and property-level findings. Identify issues to investigate before updating or publishing your markup.
Identify Structured Data Types
Review supported types such as Product, Article, and BreadcrumbList found in the inspected page source or pasted JSON-LD.
Find JSON-LD Parsing Issues
Use the JSON-LD schema validator to review parsing errors separately from missing properties or incomplete values.
Separate Errors From Recommendations
Use the schema validation tool to review missing or invalid properties alongside applicable recommended additions, based on the checks selected.
Review Previews and Suggested Fixes
Inspect simulated cards for supported types and review suggested corrections before updating your markup. Previews are not Google approval.
Validate schema markup before search engines find the problems
Use a schema validation tool to identify markup issues and plan corrections before and after deployment. Review the findings alongside the live page: passing a code check does not confirm content accuracy or Google rich-result eligibility.
Catch Issues After Page Updates
Recheck the live page with a schema testing tool after CMS or template changes to investigate missing markup or newly introduced errors.
Give Developers Clear Fix Priorities
Separate errors from recommendations, then document the affected property and page URL so developers know what to investigate and retest.
Check That Markup Matches the Page
Manually compare marked-up prices, authors and dates with the visible page. A syntax pass alone cannot confirm that the information is correct.
How to Run a Schema Markup Check in Four Steps
Use Wranker’s schema markup tester to check a public page or pasted JSON-LD. Choose the validation coverage, run the selected checks, and review issues, guidance, and simulated previews before updating the markup.
Provide a URL or JSON-LD
Enter a public page URL for implemented markup, or paste a JSON-LD object, array, or script block to review draft code.
Choose Validation Coverage
Select required-property checks, recommended warnings, fix guidance, extracted data, and simulated previews according to the review you need.
Run the Schema Checks
The schema testing tool detects supported types, parses available markup, and applies the enabled rules. Unchecked or unsupported areas should remain clearly labelled.
Review, Fix and Retest
Prioritise errors, assess recommendations against visible page content, update the code, and rerun the live URL after implementation.
When to Use a Schema Testing Tool
Use Wranker’s schema markup validator during page audits, product updates, editorial publishing, and CMS releases to review the markup involved in each change.
Validate schema markup before website launches, content updates, product changes, CMS migrations, and technical SEO audits to detect errors early, improve structured data quality, and increase rich result readiness.
Audit Priority Page Markup
Use the website schema checker to investigate reported structured-data issues on priority URLs identified during a wider site audit.
Check Product Offers Before Promotions
Review Product markup before a promotion or stock update. Manually confirm that prices, currency, and availability match the product page.
Review Article Markup Before Publishing
Check Article and BreadcrumbList markup when publishing or refreshing content. Manually confirm authors, dates and breadcrumb links match the page.
Test CMS and Template Changes
Use this schema markup testing tool to check draft JSON-LD, then test representative live pages after CMS or template changes.
Next Steps After Schema Markup Validation
After using the schema markup validator, choose a focused Wranker tool to create JSON-LD, investigate fetch issues, review page-level SEO, or preview standard search snippets.
SCHEMA CREATION
Schema Markup Generator
Create draft JSON-LD from guided page details, then return to the validator before and after implementing the markup.
OpenFETCH DIAGNOSTICS
HTTP Header Checker
Inspect HTTP status codes, redirects, and content-type headers when URL-based schema extraction fails or returns unexpected page content.
OpenPAGE-LEVEL SEO
Website SEO Analyzer
Review one page for metadata, headings, content, links, images, and indexability to investigate issues beyond structured-data validation.
OpenSTANDARD SEARCH PREVIEW
SERP Snippet Preview Tool
Preview title and meta description drafts in desktop and mobile Google-style results, separately from schema validation and rich-result testing.
Schema Markup Validator FAQs
Find answers to common questions about schema markup validation, structured data testing, JSON-LD validation, rich result previews, schema errors, and best practices for validating structured data before publishing.
A Schema Markup Validator checks whether structured data on a webpage follows Schema.org standards. It detects invalid properties, missing required fields, syntax errors, and implementation issues so your structured data is ready for search engines and rich results.
You can validate schema markup by entering a live URL or pasting JSON-LD code into a schema markup validator tool. The validator checks required fields, recommended properties, syntax errors, and structured data quality before publishing.
A schema checker identifies available structured data, while a Schema Markup Validator goes further by validating required properties, detecting errors and warnings, and confirming whether the markup is correctly implemented.
Yes. Most modern JSON-LD schema validators allow you to paste JSON-LD code directly or fetch it from a live webpage. The validator reviews syntax, required fields, and structured data implementation.
A schema validator can detect many Schema.org types, including Product, Article, FAQPage, BreadcrumbList, Organization, Local Business, Event, Recipe, Job Posting, Video, and more, depending on the structured data found on the page.
Schema markup validation helps identify missing fields, invalid values, and implementation issues before search engines crawl your pages. Valid structured data improves technical SEO quality and increases the likelihood of rich results.
No. A successful validation confirms that your structured data is technically correct, but Google ultimately decides whether a page is eligible to display rich results based on multiple ranking and quality factors.
A schema markup tester can identify invalid properties, missing required fields, incorrect data types, syntax issues, unsupported schema properties, and recommended field warnings that may affect structured data quality.
Yes. Simply enter a public URL into a website schema checker or structured data validator. The tool extracts the implemented schema and validates it against Schema.org guidelines.
Wranker's Schema Markup Validator validates structured data from live URLs or JSON-LD code, detects schema types, identifies errors and warnings, previews rich-result layouts, and provides actionable suggestions to improve structured data before publishing.
Validate Your Schema Markup Before Publishing with Confidence
Use Wranker's Schema Markup Validator to validate structured data from a live URL or JSON-LD code. Detect schema types, perform complete schema markup validation, identify errors and warnings, preview rich results, and receive actionable recommendations before publishing.
Need saved validation history, scheduled schema monitoring and project-level structured data checks? Continue inside the Wranker dashboard.