Summary scores rate a website’s performance of a concept on a scale from 0 to 100.

Summary scores appear at the start of most reports. They aim to summarize the overall qualities of the website as briefly as possible, providing a quick comparison of high-level concepts between websites.

These are example summary scores:

How summary scores are calculated

Each summary score is calculated as a weighted average of individual checks. For example, 15% of a summary score might be spelling, 10% broken links and so on (these are not real figures).

The precise weightings for each test vary slightly over time, as we are continually refining them based on the changing nature of the web.

Further reading