# Check heading structure and image alt text

**Use case:** 

For every page crawled you get the H1, H2 and H3 headings in order and the count of images without alt text. That is the pair of facts most accessibility and SEO reviews start from, and both come from the page as served.

## Input

```json
{
  "startUrls": [
    {
      "url": "https://www.w3.org/"
    }
  ],
  "maxPages": 20,
  "respectRobots": true,
  "timeoutSecs": 20,
  "maxRetries": 3
}
```

## Output

```json
{
  "url": {
    "label": "URL",
    "format": "string"
  },
  "httpStatus": {
    "label": "Status",
    "format": "integer"
  },
  "analyzed": {
    "label": "Analysed",
    "format": "boolean"
  },
  "title": {
    "label": "Title",
    "format": "string"
  },
  "titleLength": {
    "label": "Title length",
    "format": "integer"
  },
  "metaDescription": {
    "label": "Meta description",
    "format": "string"
  },
  "canonical": {
    "label": "Canonical",
    "format": "string"
  },
  "canonicalIsSelf": {
    "label": "Canonical is self",
    "format": "boolean"
  },
  "noindex": {
    "label": "Noindex",
    "format": "boolean"
  },
  "h1Count": {
    "label": "H1 count",
    "format": "integer"
  },
  "imagesMissingAltAttr": {
    "label": "Images without alt",
    "format": "integer"
  },
  "internalLinks": {
    "label": "Internal links",
    "format": "integer"
  },
  "externalLinks": {
    "label": "External links",
    "format": "integer"
  },
  "jsonLdTypes": {
    "label": "JSON-LD types",
    "format": "array"
  },
  "lang": {
    "label": "Lang",
    "format": "string"
  },
  "wordCount": {
    "label": "Words",
    "format": "integer"
  },
  "redirectCount": {
    "label": "Redirects",
    "format": "integer"
  },
  "responseMs": {
    "label": "Response (ms)",
    "format": "integer"
  },
  "htmlBytes": {
    "label": "HTML bytes",
    "format": "integer"
  },
  "issueCount": {
    "label": "Issues",
    "format": "integer"
  },
  "blockingIssueCount": {
    "label": "Blocking issues",
    "format": "integer"
  },
  "reason": {
    "label": "Reason",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [Technical SEO Audit Crawler - Site, Meta, Canonical, H1, Robots](https://apify.com/neverempty/seo-site-audit.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/neverempty/seo-site-audit.md) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

This Task's input is already configured above. Use it as-is rather than inventing a new one.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/neverempty/seo-site-audit.md

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).