URL Slug Regex Pattern

Match and validate URL-friendly slugs using regex. Ensures lowercase letters, digits, and hyphens only, with no leading or trailing hyphens.

The Pattern

/^[a-z0-9]+(?:-[a-z0-9]+)*$/

Token	Meaning
`^`	Start of string
`[a-z0-9]+`	One or more lowercase letters or digits
`(?:-[a-z0-9]+)*`	Zero or more groups of a hyphen followed by lowercase letters/digits
`$`	End of string

✅hello-worldMatch

✅my-blog-post-123Match

✅simpleMatch

✅a-b-cMatch

❌Hello-WorldNo match

❌-leading-hyphenNo match

❌trailing-hyphen-No match

❌double--hyphenNo match

javascript

const slugRegex = /^[a-z0-9]+(?:-[a-z0-9]+)*$/;
const slug = "my-blog-post-123";
const isValid = slugRegex.test(slug);
console.log(isValid); // true

python

import re
slug_regex = r'^[a-z0-9]+(?:-[a-z0-9]+)*$'
slug = "my-blog-post-123"
is_valid = bool(re.match(slug_regex, slug))
print(is_valid)  # True

Want to test this pattern with your own data?