JavaScript-Rendered HTML Fetcher

Use this endpoint when you need the final rendered HTML of a page that uses JavaScript frameworks (React, Vue, Angular, etc.) and a simple HTTP GET would only return the empty shell. Prefer this over raw HTTP fetch when the target content is dynamically injected by client-side scripts.

• URL is unreachable or returns a non-2xx HTTP status — likely returns an error response
• Page JavaScript throws fatal errors preventing full render — may return partial or empty HTML
• Timeout if the page takes too long to load or scripts are slow to execute
• Invalid or malformed URL input causes a 400-class error
• Page requires authentication or cookies not provided — returns login-gated HTML