Slug

What is a Slug?

A well-chosen slug is a small SEO lever with big impact: it contains your main keyword, builds trust in the SERP, and makes it easier for Google to categorize the topic. Plan your slug structure carefully from the start — later changes require 301 redirects and can temporarily cost ranking power. Keep slugs short, use hyphens as separators, and avoid special characters or generated IDs.

Slug refers to the readable, descriptive part of a URL after the domain name — what comes after the base address. Example: in the URL “www.example.com/seo-glossary/”, “seo-glossary” is the slug. A slug should be descriptive and keyword-relevant — not cryptic numbers or codes. The slug is a small but important on-page factor: it gives users and search engines an immediate hint about the content type and addresses keywords. A good slug supports SEO; a bad one harms the user experience.

Technically, the slug consists of URL-safe characters and is often automatically generated from the page title. Best practice: use hyphens to separate words (not underscores), keep slugs short but meaningful, use lowercase letters (HTML standard), avoid special characters. Google doesn’t treat slugs as a strong ranking signal like backlinks, but uses them as contextual information. Longer URLs with many slugs can make crawling less efficient. The slug also appears in the SERP as part of the displayed URL — a good slug looks trustworthy.

For practice: plan your URL structure carefully from the beginning — changing it later is problematic (a redirect is needed). Use consistent structural conventions. For a blog: /blog/[keyword-slug]/. For e-commerce: /products/[category]/[product-slug]/. Avoid dynamic parameters (e.g., ?id=123) where possible — descriptive URLs are better for SEO and UX. Never change slugs without 301 redirects from the old to the new URL, otherwise you lose ranking signals. A good slug is short, meaningful, and helps both humans and search engines.