Regex for URL Slug

Validates URL-friendly slugs: lowercase, digits, hyphens only.

Pattern

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

Live Tester

Enter a string to test

Examples

✓ my-blog-post

✓ hello-world

✓ page1

✗ -starts-with

✗ ends-with-

✗ has--double

Pattern Breakdown

^[a-z0-9]+ — starts with lowercase alphanumeric

(-[a-z0-9]+)* — optional hyphen-separated groups

$ — no trailing hyphen

Code Snippets

Javascript

const regex = /^[a-z0-9]+(-[a-z0-9]+)*$/;
regex.test("my-blog-post"); // true

Python

import re
pattern = r"^[a-z0-9]+(-[a-z0-9]+)*$"
bool(re.match(pattern, "my-blog-post"))  # True

Php

$pattern = '/^[a-z0-9]+(-[a-z0-9]+)*$/';
preg_match($pattern, "my-blog-post"); // 1

Related Patterns

Email Address /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/ URL /^https?:\/\/(www\.)?[a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([a-zA-Z0-9()@:%_+.~#?&/=-]*)$/ Phone Number (International) /^\+?[1-9]\d{1,14}$/ Phone Number (US) /^$?[2-9]\d{2}$?[-.\s]?\d{3}[-.\s]?\d{4}$/ Phone Number (EU) /^\+?[1-9][0-9]{0,3}[\s.-]?$?[0-9]{1,5}$?[\s.-]?[0-9]{1,5}[\s.-]?[0-9]{1,5}$/ IPv4 Address /^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$/

Frequently Asked Questions

What is the regex for URL Slug?▾

The regex pattern for URL Slug is /^[a-z0-9]+(-[a-z0-9]+)*$/. Validates URL-friendly slugs: lowercase, digits, hyphens only.

How do I use the URL Slug regex in JavaScript?▾

In JavaScript you create the pattern with a regex literal or the RegExp constructor and call .test() to check a string against it. A ready-to-copy example is shown in the Code Snippets section above, alongside Python and PHP versions.

What does the URL Slug pattern match?▾

It matches strings like my-blog-post; it rejects strings like -starts-with. See the Examples section above for the full list of matching and non-matching cases.