A "slug" is just the readable part of a web address — the bit after the domain name. Compare yoursite.com/p?id=48291 to yoursite.com/best-coffee-makers-2025. Same destination, very different first impression.
What Makes a Slug "Clean"
- All lowercase — mixed case can create duplicate-looking URLs
- Words separated by hyphens, not underscores or spaces (
best-coffee-makers, notbest_coffee_makersorbest%20coffee%20makers) - Short and descriptive — enough to tell a human what the page is about at a glance
- No stop words that add no meaning ("a," "the," "of") unless they're needed for clarity
Why It's Not Just Cosmetic
A readable slug shows up in search results and gives users a preview of the page before they click. It also gets shared as-is on social media and in emails, so a slug like /article-id-48291 looks far less trustworthy than /how-to-choose-running-shoes — even if both lead to the same content.
Common Mistakes
Changing a slug after a page has been live and indexed for a while can cause it to temporarily drop in search rankings, so it's worth getting it right early rather than renaming pages repeatedly. Stuffing a slug with repeated keywords ("best-best-running-shoes-shoes-buy") also reads as spam rather than helpful — one clear phrase beats a crowded one.
Generate One in Seconds
Typing out a clean slug by hand for every title gets tedious fast. Paste your title into our Text-to-Slug tool and it instantly converts it to a clean, hyphenated, lowercase URL slug.