# Find Duplicate H1 Headings in Product Page HTML

**Use case:** 

Compare two synthetic public product pages: one has a single H1, the other has duplicate H1 headings and a skipped level. Review the static HTML heading audit and export findings as CSV or JSON. No login or JavaScript rendering.

## Input

```json
{
  "urls": [
    "https://api.apify.com/v2/key-value-stores/DHMHtotPcN9CAKXYj/records/h1-one-20261021.html",
    "https://api.apify.com/v2/key-value-stores/DHMHtotPcN9CAKXYj/records/h1-duplicate-20261021.html"
  ]
}
```

## Output

```json
{
  "sourceUrl": {
    "label": "Input URL",
    "format": "string"
  },
  "finalUrl": {
    "label": "Final URL",
    "format": "string"
  },
  "mode": {
    "label": "Audit mode",
    "format": "string"
  },
  "issueCount": {
    "label": "Issue count",
    "format": "integer"
  },
  "status": {
    "label": "Status",
    "format": "string"
  },
  "checkedAt": {
    "label": "Timestamp",
    "format": "string"
  }
}
```

## How it works

### 1. Sign up on Apify or log in

The PAL | H1 Heading Checker & SEO Structure Audit Actor is ready to run with the inputs already set for "Find Duplicate H1 Headings in Product Page HTML". [Sign up or log in](https://console.apify.com/create-task-from-example/pT75q6YtXx9xvKRZp) and you'll land in Apify Console with a copy of this exact task.

### 2. Start the "Find Duplicate H1 Headings in Product Page HTML" task

The PAL | H1 Heading Checker & SEO Structure Audit Actor will start running based on the input automatically. You can also change all the input fields, like public https page urls, to match your specific use case.

### 3. Receive the "Find Duplicate H1 Headings in Product Page HTML" output

Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as input url, final url, audit mode, and more.

### 4. Integrate into your workflow

The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also [run the "Find Duplicate H1 Headings in Product Page HTML" task via API](https://apify.com/practical_ai_lab_jp/pal-h1-heading-checker.md).

## About this Actor

This example demonstrates how to use [PAL | H1 Heading Checker & SEO Structure Audit](https://apify.com/practical_ai_lab_jp/pal-h1-heading-checker.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/practical_ai_lab_jp/pal-h1-heading-checker.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/practical_ai_lab_jp/pal-h1-heading-checker.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`).