Doctype checker

Detects outdated HTML tags that should be replaced with modern alternatives.

Get the HTML language attribute from a webpage.

Check if a webpage declares its character encoding.

Checks if a webpage is set to noindex, preventing it from appearing in search engines.

Analyze the ratio of text content to HTML code for SEO and performance optimization.

Check the total size of a web page, including all resources, for performance analysis.

Check if images on a webpage have the lazy loading attribute enabled for performance optimization.