SEO Technical SEO Web Development

What is Slug and Why is It Important for SEO?

June 17, 2025

A slug is the part of a URL that identifies a specific page in an easy-to-read form. In SEO, a well-optimized slug plays a crucial role in how search engines and users understand what your page is about.

Table of Contents

What Is a Slug?

A URL slug is the customizable part of the link after your domain name. For example, in:

https://example.com/seo-url-slug-guide

seo-url-slug-guide” is the slug. It gives both users and search engines a hint about the page’s content.

Why Slugs Are Important for SEO

How to Create SEO-Friendly Slugs

  1. Use primary keywords
  2. Keep it short and meaningful
  3. Remove stop words (and, the, a, of, etc.)
  4. Use hyphens (-), not underscores (_)
  5. Use lowercase letters
Pro Tip!

Use Sort Lines Alphabetically to organize slug ideas or blog titles before publishing.

Common Slug Mistakes to Avoid

Tools to Help You Optimize Slugs

Here are some online tools to help create and test effective slugs:

Conclusion

Understanding and optimizing your slug is one of the simplest and most effective ways to enhance your website’s SEO. Slugs improve readability, help search engines index pages accurately, and boost organic CTR. Keep your slugs short, relevant, and keyword-rich, and always align them with your page’s core intent.

FAQs About Slugs and SEO

What is a slug in a URL?

A slug is the portion of the URL that comes after the domain name and typically reflects the page’s topic or title.

How does a slug affect SEO?

A well-optimized slug helps search engines understand page content and improves your chances of ranking higher.

Can I change a slug after publishing?

Yes, but you should set up 301 redirects to avoid broken links and preserve SEO value.

Are hyphens or underscores better for slugs?

Always use hyphens. Google treats hyphens as space but ignores underscores.