POST/v1/seo/onpage/instant

On-Page Instant API

Instant on-page SEO audit for any URL — meta tags, headings, schema, images, internal links, and Core Web Vitals. From $0.03/call.

Crawl and analyze any URL in real time. Returns title, meta description, headings structure, word count, internal/external links, images, page speed signals, and on-page SEO issues — all in a single call.

Full Docs Get API Key — Free $5 Credit $0.03 / call

Try it live

Fill in the fields and hit Run to see a real response.

POST/v1/seo/onpage/instantonpage-instant$0.03/call

Response

Example response — hit "Send Request" to see a live result

{
  "ok": true,
  "data": {
    "url": "https://example.com",
    "statusCode": 200,
    "title": "Example Domain",
    "metaDescription": "This is an example domain.",
    "h1": [
      "Example Domain"
    ],
    "wordCount": 450,
    "internalLinks": 12,
    "externalLinks": 5,
    "images": 3,
    "imagesWithoutAlt": 1,
    "loadTime": 1.2
  }
}

Features

✓Full on-page audit in a single API call

✓Title, meta description, headings, and content analysis

✓Internal and external link extraction

✓Image alt text and optimization checks

✓Page load time and resource counts

Use cases

SEO Audit Automation

Feed URLs into automated audit pipelines and flag on-page issues like missing meta descriptions, broken headings, or thin content.

Content QA

Validate that every published page meets on-page SEO standards before or after launch.

Quick start

Copy this snippet and start making calls.

const res = await fetch('https://api.yepapi.com/v1/seo/onpage/instant', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "url": "https://example.com"
  }),
});
const data = await res.json();
console.log(data);

What developers say

“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
Marcus T.
SEO Platform Founder

“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
Priya S.
Full-Stack Developer

“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Jake R.
Indie Hacker

Frequently asked questions

Each API call costs $0.03. No monthly minimums or subscriptions — you only pay for what you use.

Sign up for a free API key, then send a POST request to /v1/seo/onpage/instant. Check the code example above for a ready-to-use snippet in JavaScript, cURL, or Python.

YepAPI bundles SEO, AI, and web scraping APIs under one key with no monthly minimums. You get lower per-call pricing, a unified dashboard, and one billing account instead of managing multiple providers.

Ready to integrate?

Get your API key and start making calls in 30 seconds. $5 free credit on signup — no credit card required.

Get API Key — Free $5 Credit Read Docs

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