Structured Data Markup Validator APIextracts and validates structured data from webpages or raw HTML.
The API handles structured data including JSON-LD extraction, Microdata extraction, RDFa extraction, structured markup type detection, structured data item counts, missing recommended fields, invalid or incomplete structured items, article markup warnings, detected structured markup types, validation status, usage status, safety notes, and disclaimer.
The API returns structured data extraction results, JSON-LD items, Microdata items, RDFa items, detected structured markup types, total item counts, format counts, validation status, errors, warnings, recommended field warnings, and technical disclaimer.
This API is useful for SEO teams, developers, SaaS builders, CMS platforms, marketing agencies, technical SEO consultants, content platforms, frontend teams, backend teams, QA teams, ecommerce platforms, publisher sites, news sites, blog platforms, product teams, web audit platforms, site monitoring services, SEO software companies, and internal tooling teams.
The API checks structured data submitted by URL or raw HTML and returns technical extraction and validation results. It does not hack, brute force, attempt logins, scan private systems, scrape restricted content, bypass robots.txt, change customer data, send emails, create calendar events, guarantee SEO ranking, guarantee special search display behavior, guarantee search platform approval, or replace professional SEO review.
{"ok":true,"formats":{"json_ld":0,"microdata":0,"rdfa":0},"schema_types":[],"counts":{"total_items":0,"json_ld":0,"microdata":0,"rdfa":0},"items":{"json_ld":[],"microdata":[],"rdfa":[]},"warnings":["No structured data detected."],"disclaimer":"Results are technical validation only and do not guarantee SEO ranking, rich results, or search engine approval."}
curl --location --request POST 'https://zylalabs.com/api/12802/structured+data+markup+validator+api/25184/extract+schema+markup' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{
"url": "https://example.com"
}'
{"ok":true,"valid":true,"formats":{"json_ld":0,"microdata":1,"rdfa":0},"schema_types":["WebPage"],"counts":{"total_items":1,"json_ld":0,"microdata":1,"rdfa":0},"errors":[],"warnings":[],"disclaimer":"Results are technical validation only and do not guarantee SEO ranking, rich results, or search engine approval."}
curl --location --request POST 'https://zylalabs.com/api/12802/structured+data+markup+validator+api/25185/validate+schema+markup' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{
"url": "https://google.com"
}'
{"ok":true,"valid":true,"items_checked":1,"schema_types":["Article"],"errors":[],"warnings":[],"results":[{"valid":true,"errors":[],"warnings":[],"schema_type":"Article"}],"disclaimer":"Results are technical validation only and do not guarantee SEO ranking, rich results, or search engine approval."}
curl --location --request POST 'https://zylalabs.com/api/12802/structured+data+markup+validator+api/25186/validate+json-ld' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{
"jsonld": {
"@context": "https://google.com",
"@type": "Article",
"headline": "Example Article"
}
}'
{"ok":true,"schema_types":["WebPage"],"counts":{"total_items":1,"types_detected":1,"formats":{"json_ld":0,"microdata":1,"rdfa":0}},"disclaimer":"Results are technical validation only and do not guarantee SEO ranking, rich results, or search engine approval."}
curl --location --request POST 'https://zylalabs.com/api/12802/structured+data+markup+validator+api/25187/detect+schema+types' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{
"url": "https://google.com"
}'
| Header | Description |
|---|---|
Authorization
|
[Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed. |
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
Each endpoint returns structured data related to structured markup, including JSON-LD, Microdata, and RDFa items. Responses may include item counts, detected structured markup types, validation status, warnings, and errors for a submitted URL or raw HTML.
Key fields in the response data include `ok` (status), `formats` (counts of JSON-LD, Microdata, RDFa), `schema_types` (detected types), `counts` (total and format-specific item counts), `items` (extracted items), `errors`, `warnings`, and a `disclaimer` regarding the results.
The response data is organized in a JSON format, with top-level keys indicating the status and details of the extraction or validation process. Nested objects provide specific counts, detected types, and lists of items, errors, and warnings, making it easy to parse and utilize programmatically.
Each endpoint provides information on structured data extraction, validation, and detection. This includes item counts, detected structured markup types, validation status, and any errors or warnings related to the structured data found in the submitted content.
Users can customize their requests by submitting different URLs or raw HTML content to the endpoints. Each endpoint is designed to handle various structured data formats, allowing users to focus on specific types of schema markup relevant to their needs.
Typical use cases include SEO audits, structured data validation for web pages, checking structured markup completeness, reviewing detected structured markup types, and identifying technical warnings or errors in submitted URL or raw HTML content.
Data reflects technical extraction and validation checks on the submitted URL or raw HTML at the time of the request. Results may vary based on page content, markup format, accessibility, redirects, and parsing behavior.
Standard data patterns include counts of detected items, detected structured markup types, format counts, validation status, warnings, and errors. Responses may indicate whether structured markup was present, missing, incomplete, or technically invalid.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
You can monitor your API usage through the response headers included with every request:
x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.
Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.
Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund
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