What is Slugify String Online?
A URL slug is the human-readable part of a web address that identifies a page. Using our slugify string online tool ensures your slugs are lowercase, hyphen-separated, stripped of special characters, and contain relevant keywords. Good slugs are critical for SEO as they give search engines and users a clear indication of what the page contains. This tool converts any title or descriptive string into a well-formed slug following industry best practices. It automatically handles non-English characters via transliteration where possible and ensures that trailing or delete duplicate hyphens are cleaned up. By generating slugs in a predictable way, you can build solid routing systems in frameworks like Next.js, Gatsby, or Hugo. Slugs also make your shared links look more professional and trustworthy compared to opaque database IDs or raw query parameters.
How to Use Slugify String Online
- Type or paste your title or text.
- The slug is generated instantly below.
- Copy and use it as your URL path, file name, or database key.
Example
SEO-ready URL slug
Input
How to Deploy a Next.js App in 2025!Output
how-to-deploy-a-nextjs-app-in-2025Developer Tips
Always store your slug in your database with a `unique` constraint. If a title changes, consider implementing a 301 redirect from the old slug to the new one to preserve SEO ranking.
Frequently Asked Questions
Why use hyphens instead of underscores in URLs?
Google recommends hyphens as word separators in URLs. Underscores are treated as word-joiners, which can hurt SEO. "my-page" is preferred over "my_page".
Should URL slugs be lowercase?
Yes. Lowercase slugs prevent duplicate content issues since servers may treat "My-Page" and "my-page" as the same or different URLs, causing SEO problems.