SEO guide
What is a URL slug?
A URL slug is the readable part of a web address that identifies a specific page. In example.com/tools/word-counter/, the slug is word-counter.
Good slug habits
A good slug is short, lowercase, and easy to read. Hyphens are usually better than underscores because they make separate words clearer for people scanning the address.
Examples
best-running-shoes is clearer than post-1847. json-formatter is clearer than tool. The slug should match the page topic without becoming a long sentence.