{
"input": "example.com",
"url": "https://example.com/",
"host": "example.com",
"checkedAt": "2026-10-20T16:07:32+00:00",
"http": {
"finalUrl": "https://example.com/",
"status": 200,
"redirectChain": [
{
"url": "https://example.com/",
"status": 200
}
],
"responseTimeMs": 31,
"contentType": "text/html; charset=utf-8",
"bytes": 577
},
"securityHeaders": {
"present": [],
"missing": [
"HSTS",
"Content-Security-Policy",
"X-Content-Type-Options",
"X-Frame-Options",
"Referrer-Policy",
"Permissions-Policy"
],
"server": "cloudflare",
"xPoweredBy": null
},
"seo": {
"title": "Example Domain",
"titleLength": 14,
"metaDescription": null,
"metaDescriptionLength": 0,
"canonical": null,
"robotsMeta": null,
"lang": "en",
"viewport": "width=device-width,initial-scale=1",
"h1Count": 0,
"h1": [],
"imagesTotal": 0,
"imagesMissingAlt": 0,
"openGraph": {
"title": null,
"description": null,
"image": null
},
"favicon": true
},
"robotsTxt": {
"url": "https://example.com/robots.txt",
"status": 404,
"found": false,
"sitemaps": null
},
"sitemap": {
"url": "https://example.com/sitemap.xml",
"status": 404,
"found": false,
"sitemaps": null
},
"ssl": {
"host": "example.com",
"valid": true,
"tlsVersion": "TLSv1.3",
"issuer": "SSL Corporation",
"subject": "example.com",
"validFrom": "2026-09-26T22:49:11+00:00",
"validTo": "2026-12-25T22:56:35+00:00",
"daysUntilExpiry": 66,
"subjectAltNames": [
"example.com",
"*.example.com"
]
},
"dns": {
"A": [
"104.20.23.154",
"172.66.147.243"
],
"AAAA": [
"2606:4700:10::6814:179a",
"2606:4700:10::ac42:93f3"
],
"MX": [
"0 ."
],
"NS": [
"elliott.ns.cloudflare.com",
"hera.ns.cloudflare.com"
],
"CAA": [],
"spf": "v=spf1 -all",
"dmarc": "v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s",
"txtCount": 2,
"domain": "example.com"
},
"score": 62,
"issues": [
{
"severity": "high",
"code": "MISSING_HEADER",
"message": "Missing security header: HSTS"
},
{
"severity": "low",
"code": "MISSING_HEADER",
"message": "Missing security header: Content-Security-Policy"
},
{
"severity": "low",
"code": "MISSING_HEADER",
"message": "Missing security header: X-Content-Type-Options"
},
{
"severity": "low",
"code": "MISSING_HEADER",
"message": "Missing security header: X-Frame-Options"
},
{
"severity": "low",
"code": "MISSING_HEADER",
"message": "Missing security header: Referrer-Policy"
},
{
"severity": "low",
"code": "MISSING_HEADER",
"message": "Missing security header: Permissions-Policy"
},
{
"severity": "low",
"code": "NO_CAA",
"message": "No CAA record restricting certificate authorities"
},
{
"severity": "medium",
"code": "NO_META_DESCRIPTION",
"message": "No meta description"
},
{
"severity": "medium",
"code": "NO_H1",
"message": "No <h1> heading"
},
{
"severity": "low",
"code": "NO_CANONICAL",
"message": "No canonical link"
},
{
"severity": "low",
"code": "NO_ROBOTS_TXT",
"message": "robots.txt not found"
},
{
"severity": "low",
"code": "NO_SITEMAP",
"message": "No sitemap.xml found (and none declared in robots.txt)"
}
],
"issueCount": 12
}
curl --location --request GET 'https://zylalabs.com/api/14313/web+intelligence+api/35875/website+health+audit?url=example.com' --header 'Authorization: Bearer YOUR_API_KEY'
{
"input": "wordpress.org",
"checkedAt": "2026-10-20T16:08:06+00:00",
"finalUrl": "https://wordpress.org/",
"status": 200,
"redirectChain": [
{
"url": "https://wordpress.org/",
"status": 200
}
],
"certIssuer": "Let's Encrypt",
"technologyCount": 13,
"categories": [
"Blogs",
"CMS",
"Databases",
"Font scripts",
"Miscellaneous",
"Page builders",
"Performance",
"Programming languages",
"Reverse proxies",
"SSL/TLS certificate authorities",
"Security",
"Tag managers",
"Web servers",
"WordPress plugins"
],
"technologies": [
{
"name": "WordPress",
"version": "7.2",
"confidence": 100,
"categories": [
"CMS",
"Blogs"
],
"website": "https://wordpress.org",
"saas": true,
"oss": true,
"pricing": [
"low",
"recurring",
"freemium"
],
"cpe": "cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*",
"detectedVia": [
"headers",
"meta",
"scriptSrc"
]
},
{
"name": "MySQL",
"version": null,
"confidence": 100,
"categories": [
"Databases"
],
"website": "https://mysql.com",
"saas": null,
"oss": null,
"pricing": [],
"cpe": "cpe:2.3:a:mysql:mysql:*:*:*:*:*:*:*:*",
"detectedVia": [
"implied by WordPress"
]
},
{
"name": "Google Font API",
"version": null,
"confidence": 100,
"categories": [
"Font scripts"
],
"website": "https://google.com/fonts",
"saas": null,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"dom"
]
},
{
"name": "Open Graph",
"version": null,
"confidence": 100,
"categories": [
"Miscellaneous"
],
"website": "https://ogp.me",
"saas": null,
"oss": true,
"pricing": [],
"cpe": null,
"detectedVia": [
"dom"
]
},
{
"name": "RSS",
"version": null,
"confidence": 100,
"categories": [
"Miscellaneous"
],
"website": "https://www.rssboard.org/rss-specification",
"saas": null,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"dom"
]
},
{
"name": "WordPress Site Editor",
"version": null,
"confidence": 100,
"categories": [
"Page builders"
],
"website": "https://wordpress.org/documentation/article/site-editor/",
"saas": null,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"html"
]
},
{
"name": "Priority Hints",
"version": null,
"confidence": 100,
"categories": [
"Performance"
],
"website": "https://wicg.github.io/priority-hints/",
"saas": null,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"dom"
]
},
{
"name": "PHP",
"version": null,
"confidence": 100,
"categories": [
"Programming languages"
],
"website": "https://php.net",
"saas": null,
"oss": null,
"pricing": [],
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"detectedVia": [
"implied by WordPress"
]
},
{
"name": "Let's Encrypt",
"version": null,
"confidence": 100,
"categories": [
"SSL/TLS certificate authorities"
],
"website": "https://letsencrypt.org/",
"saas": null,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"certIssuer"
]
},
{
"name": "HSTS",
"version": null,
"confidence": 100,
"categories": [
"Security"
],
"website": "https://www.rfc-editor.org/rfc/rfc6797#section-6.1",
"saas": null,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"headers"
]
},
{
"name": "Google Tag Manager",
"version": null,
"confidence": 100,
"categories": [
"Tag managers"
],
"website": "https://www.google.com/tagmanager",
"saas": true,
"oss": null,
"pricing": [],
"cpe": null,
"detectedVia": [
"html"
]
},
{
"name": "Nginx",
"version": null,
"confidence": 100,
"categories": [
"Web servers",
"Reverse proxies"
],
"website": "https://nginx.org/en",
"saas": null,
"oss": null,
"pricing": [],
"cpe": "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",
"detectedVia": [
"headers"
]
},
{
"name": "Gutenberg",
"version": "24.2.0",
"confidence": 100,
"categories": [
"WordPress plugins"
],
"website": "https://github.com/WordPress/gutenberg",
"saas": null,
"oss": true,
"pricing": [],
"cpe": null,
"detectedVia": [
"dom",
"scriptSrc"
]
}
]
}
curl --location --request GET 'https://zylalabs.com/api/14313/web+intelligence+api/35876/tech+stack+detection?url=wordpress.org' --header 'Authorization: Bearer YOUR_API_KEY'
{
"url": "https://en.wikipedia.org/wiki/Markdown",
"finalUrl": "https://en.wikipedia.org/wiki/Markdown",
"statusCode": 200,
"crawledAt": "2026-10-20T16:08:02+00:00",
"title": "Markdown - Wikipedia",
"description": null,
"author": "Authority control databases International FAST National United States Israel",
"publishedDate": "2005-08-09",
"siteName": "Wikimedia Foundation, Inc.",
"language": "en",
"extractionMode": "article",
"_note": "Response truncated for documentation purposes"
}
curl --location --request GET 'https://zylalabs.com/api/14313/web+intelligence+api/35877/page+to+markdown?url=https://en.wikipedia.org/wiki/Markdown' --header 'Authorization: Bearer YOUR_API_KEY'
{
"startUrl": "crawlee.dev",
"checkedAt": "2026-10-20T16:07:58+00:00",
"summary": {
"pagesCrawled": 7,
"pagesSkippedByRobots": 0,
"linksChecked": 27,
"broken": 0,
"blocked": 2,
"ok": 25,
"stoppedEarly": false,
"robotsTxtUsed": true,
"linksFound": 169,
"linksUnchecked": 142,
"truncated": true,
"truncatedReasons": [
"max_links",
"time_budget"
],
"elapsedMs": 11295
},
"links": [
{
"url": "https://stackoverflow.com/questions/tagged/crawlee",
"verdict": "blocked",
"status": 403,
"error": null,
"finalUrl": null,
"redirects": 0,
"resourceType": "link",
"internal": false,
"foundOn": [
"https://crawlee.dev/",
"https://crawlee.dev/js",
"https://crawlee.dev/js/docs/examples",
"https://crawlee.dev/blog",
"https://crawlee.dev/js/docs/guides"
],
"anchorTexts": [
"Stack Overflow"
]
},
{
"url": "https://www.similarweb.com/website/bsky.app/",
"verdict": "blocked",
"status": 403,
"error": null,
"finalUrl": null,
"redirects": 0,
"resourceType": "link",
"internal": false,
"foundOn": [
"https://crawlee.dev/blog"
],
"anchorTexts": [
"SimilarWeb"
]
}
],
"truncated": true
}
curl --location --request GET 'https://zylalabs.com/api/14313/web+intelligence+api/35878/broken+link+finder?url=crawlee.dev&max_pages=10' --header 'Authorization: Bearer YOUR_API_KEY'
{
"url": "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf",
"bytes": 13264,
"pageCount": 1,
"ocrPages": 0,
"textLayerPages": 1,
"tableCount": 0,
"format": "markdown",
"truncated": false,
"timeBudgetExceeded": false,
"elapsedMs": 11600,
"content": "<!-- page 1 (text) -->\n\nDummy PDF file",
"pages": [
{
"page": 1,
"method": "text",
"text": "Dummy PDF file",
"tables": [],
"ocrConfidence": null
}
]
}
curl --location --request GET 'https://zylalabs.com/api/14313/web+intelligence+api/35879/pdf+and+image+text+extraction?url=https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf' --header 'Authorization: Bearer YOUR_API_KEY'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Web Intelligence API simply include your bearer token in the Authorization header.
| 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.
Web Intelligence API audits websites, detects their tech stack, converts pages to Markdown, finds broken links and extracts text from PDFs with OCR, all with one key.
Yes. Website Health Audit, Tech Stack Detection and Broken Link Finder accept either a bare domain name or a full address that starts with https.
Broken Link Finder crawls up to 50 pages and OCR processes up to 20 pages, so these calls can take 10-100 seconds. The other endpoints usually answer in a few seconds.
English (eng), Hebrew (heb), Arabic (ara), German (deu), French (fra) and Spanish (spa). Pass them comma-separated in the languages parameter. Right-to-left text is fixed automatically.
No. Only public websites are checked; private, local and internal addresses are blocked.
Yes. Links blocked by robots.txt or by the target site are reported as blocked, not as broken.
Each endpoint returns specific data: the Website Health Audit provides a health score and security details; Tech Stack Detection reveals technologies used; Page to Markdown converts web content into Markdown format; Broken Link Finder lists broken links; and PDF and Image Text Extraction outputs text and tables from documents.
Key fields include `status` (HTTP response), `finalUrl` (resolved URL), `securityHeaders` (for audits), `technologies` (for tech stack), `markdown` (for page conversion), and `content` (for PDF extraction). Each endpoint has unique fields relevant to its function.
Response data is structured in JSON format, with nested objects for detailed information. For example, the Website Health Audit includes sections for HTTP status, security headers, and SEO metrics, allowing users to easily parse and utilize the data.
The Website Health Audit provides security and SEO insights; Tech Stack Detection identifies technologies and versions; Page to Markdown offers content in Markdown format; Broken Link Finder lists broken links; and PDF Extraction retrieves text and tables from documents.
Parameters vary by endpoint. For example, the Website Health Audit accepts a URL or domain, while the PDF Extraction endpoint requires a document URL. Users can customize requests by specifying additional options, such as languages for OCR.
Users can analyze the health score from the Website Health Audit to improve site performance, use the tech stack data for compatibility checks, convert web pages to Markdown for documentation, and identify broken links to enhance user experience.
Data accuracy is maintained through automated checks and regular updates. The API uses reliable sources for technology detection and adheres to web standards, ensuring that the information provided is current and relevant.
Typical use cases include website audits for SEO and security improvements, technology stack analysis for development decisions, content conversion for documentation, link checking for site maintenance, and text extraction for data analysis from PDFs.
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