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 $0.03 / call

Try it live

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

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

Live testing

API Key

URL*

Response

Example response — hit "Run" 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);

Why YepAPI is cheaper

No monthly minimums. No enterprise plans. Just pay per call.

Provider	Cost / call	Catch
YepAPI	$0.03	No minimum. Pay as you go.
Screaming Frog	$0.05	Desktop-only tool
Semrush API	$0.15	Enterprise plan
DataForSEO	$0.05	$500/mo minimum

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. No credit card required.

Get Started Read Docs

More seo apis endpoints

Keywords

$0.15

Keyword research API with search volume, CPC, difficulty, competition, and 12-month trends. Up to 100 keywords per request from $0.15/call.

POST /v1/seo/keywords

Keyword Ideas

$0.03

Generate hundreds of keyword ideas from any seed keyword with volume, CPC, and difficulty scores. Content planning and topic expansion from $0.03/call.

POST /v1/seo/keywords/ideas

Related Keywords