# Find the top fixes to speed up a web page

**Use case:** 

Audits a page with Lighthouse on mobile and lists the top fixes ranked by how much load time each would save, such as unused JavaScript, oversized images or render-blocking resources (example: wikipedia.org). Good for developers, SEO audits and client reports.

## Input

```json
{
  "startUrls": [
    {
      "url": "https://www.wikipedia.org"
    }
  ],
  "maxUrls": 50,
  "devices": [
    "mobile"
  ],
  "categories": [
    "performance"
  ],
  "runsPerUrl": 1,
  "maxOpportunities": 5,
  "compareWithPrevious": false,
  "monitorName": "default",
  "scoreChangeThreshold": 10,
  "engine": "auto",
  "fieldDataLevel": "url-then-origin",
  "saveHtmlReport": false,
  "pageTimeoutSecs": 60,
  "cpuCalibration": "auto"
}
```

## Output

```json
{
  "url": {
    "label": "URL",
    "format": "link"
  },
  "device": {
    "label": "Device",
    "format": "text"
  },
  "performanceScore": {
    "label": "Performance",
    "format": "number"
  },
  "fix1": {
    "label": "Fix #1",
    "format": "text"
  },
  "fix1SavingsMs": {
    "label": "Saves (ms)",
    "format": "number"
  },
  "fix2": {
    "label": "Fix #2",
    "format": "text"
  },
  "fix2SavingsMs": {
    "label": "Saves (ms)",
    "format": "number"
  },
  "fix3": {
    "label": "Fix #3",
    "format": "text"
  },
  "fix3SavingsMs": {
    "label": "Saves (ms)",
    "format": "number"
  },
  "pageWeightKb": {
    "label": "Page weight (KB)",
    "format": "number"
  },
  "requestCount": {
    "label": "Requests",
    "format": "number"
  },
  "reportUrl": {
    "label": "HTML report",
    "format": "link"
  }
}
```

## How it works

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

The Core Web Vitals Checker: Bulk PageSpeed & Lighthouse Audit Actor is ready to run with the inputs already set for "Find the top fixes to speed up a web page". [Sign up or log in](https://console.apify.com/create-task-from-example/wWNlXpOiyTwX7B3gC) and you'll land in Apify Console with a copy of this exact task.

### 2. Start the "Find the top fixes to speed up a web page" task

The Core Web Vitals Checker: Bulk PageSpeed & Lighthouse Audit Actor will start running based on the input automatically. You can also change all the input fields, like URLs to audit, max urls, and more, to match your specific use case.

### 3. Receive the "Find the top fixes to speed up a web page" 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 URL, device, performance, 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 the top fixes to speed up a web page" task via API](https://apify.com/datacolada/lighthouse-core-web-vitals-auditor.md).

## About this Actor

This example demonstrates how to use [Core Web Vitals Checker: Bulk PageSpeed & Lighthouse Audit](https://apify.com/datacolada/lighthouse-core-web-vitals-auditor.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/datacolada/lighthouse-core-web-vitals-auditor.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/datacolada/lighthouse-core-web-vitals-auditor.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`).