ScreenSize.net vs The Specification: Features, Pricing and Fit

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Listed product details for ScreenSize.net and The Specification
Detail	ScreenSize.net	The Specification
Overview	It clarifies the difference between the physical display size, the full pixel grid, and the CSS viewport where media queries apply, which helps when debugging responsive layouts or adjusting image sharpness and asset sizing. The detection runs entirely in the browser, and only anonymous aggregate stats are stored—no raw visits, IP addresses, or report links are kept on the servers.	The specification is built in the open under an MIT licence and covers various aspects of website development
Listed features	Not listed	Covers 10 areas of website development, including foundations, SEO, and accessibility Provides a checklist of 128 topics to ensure a website meets the required standards Allows agents to query the spec through an open MCP server and published Agent Skill Offers implementation hints for various platforms, including WordPress, Drupal, and plain HTML
Best suited to	Not listed	Web developers looking for a comprehensive guide to building a good website Teams seeking to improve their website's technical features and accessibility Individuals wanting to learn about website development and best practices
Limitations and fit	Not listed	Not listed
Pricing model	Free	Free
Listed price	Not listed	Not listed
Platforms	Browser	Browser