This article is intended to explain why URLs (or email addresses) are highlighted as long or polysyllabic words in the page report of the Readability feature within Quality Assurance.
How a URL should look on a page when written in the content:
"Please visit our website https://www.siteimprove.com for more information".
When a URL is written and presented within content in this way, the Readability algorithm considers this content the same way as written words. A screen reader, for example, will read the content out loud by reading the URL letter for letter in this situation. Having a URL written out in the content will make it difficult to read. Users with reading difficulties, who read letter-for-letter as opposed to word-for-word, would faint in this scenario!
How a URL hyperlink should look on a page:
"Please visit our website for more information".
Therefore, content editors should present a readable link text to the end user and not the full URL on their web pages.