A good URL slug is lowercase, hyphen-separated, free of accents and punctuation, and short enough to read in a search result. This generator handles the transliteration and cleanup, and can optionally strip common stop words to keep the slug tight.
Hyphens. Google has stated for years that hyphens are treated as word separators while underscores join words together, so "blue-widgets" reads as two words and "blue_widgets" as one.
Short enough to stay readable — three to six meaningful words is a good target. Long slugs get truncated in search results and are harder to share.
Usually yes, when they add nothing. But keep them where removal changes meaning: "how-to-tie-a-tie" is clearer than "tie-tie".
You can, but set up a 301 redirect from the old URL to the new one. Changing a slug without redirecting loses every accumulated link and ranking signal pointing at the old address.
All free tools · Blog · About · Contact