ScrapingBee at https://app.scrapingbee.com/api/v1/ fetches a URL for you through headless Chrome and rotating proxies, and returns the HTML (or extracted data).
Copy your key from the ScrapingBee dashboard and pass it as api_key. In the examples it's written {{SCRAPINGBEE_API_KEY}}.
Full reference: https://www.scrapingbee.com/documentation/
render_js=false skips the browser for static pages (cheaper).
curl "https://app.scrapingbee.com/api/v1/?api_key={{SCRAPINGBEE_API_KEY}}&url=https%3A%2F%2Fexample.com&render_js=false"
curl "https://app.scrapingbee.com/api/v1/?api_key={{SCRAPINGBEE_API_KEY}}&url=https%3A%2F%2Fexample.com&extract_rules=%7B%22title%22%3A%22h1%22%7D"