What is a URL Slug?
A URL slug is the human-readable part of a URL that identifies a specific page. For example, in example.com/blog/my-first-blog-post, the slug is my-first-blog-post. Slugs are lowercase, use hyphens to separate words, and contain only letters, digits, and the chosen separator — no spaces, no special characters, no accents.
Well-crafted slugs improve SEO, make URLs easier to share, and give users a clear preview of what a page contains before they click. This free online slug generator converts any text to a clean URL slug directly in your browser.
How the URL Slug Generator Works
This tool converts text to a URL slug in the following order:
- German umlauts are replaced:
ä → ae,ö → oe,ü → ue,ß → ss - Unicode normalization (NFKD) strips accents from letters like
é → e,ñ → n,ç → c - Lowercase is applied (optional — disable with the Lowercase toggle)
- Non-alphanumeric characters are replaced with the chosen separator
- Consecutive separators are collapsed into one
- Leading and trailing separators are removed
- Max length trims the slug at the last complete word within the limit
Separator Options
| Separator | Example result | Best for |
|---|---|---|
- hyphen | my-blog-post | Blog URLs, page paths — best for SEO |
_ underscore | my_blog_post | Python identifiers, some CMS systems |
. dot | my.blog.post | Ruby gem names, legacy namespacing |
Google treats hyphens as word separators in URLs, making them the best choice for search engine optimisation. Underscores are treated as word joiners — my_blog_post is indexed as myblogpost, not three separate words.
Batch Slug Generation
The Batch tab converts an entire list at once. Paste one item per line — product names, blog titles, file names, branch names — click Convert Batch, and copy the results. Empty lines are preserved so the output aligns line-by-line with the input.
Slug to Text (Unslugify)
The Slug → Text tab reverses the process: my-first-blog-post becomes My First Blog Post. This is useful when you have slugs and need to generate readable labels for navigation menus, sitemaps, or import metadata.
Slug Best Practices
- Use hyphens as separators — they are the SEO-safe choice
- Keep slugs short: 3 to 5 words is ideal
- Put the primary keyword early in the slug
- Avoid dates, stop words (
a,the,and), and keyword stuffing - Never change a slug after a page is indexed without setting up a redirect
Privacy
All conversion runs locally in your browser. No text is sent to any server, stored, or shared. The tool works offline once the page has loaded.