Regex for Slugs: Generate and Validate URL-Friendly Strings
Validate and generate URL slugs with regex. Match lowercase letters, digits, hyphens, and use replacement patterns to slugify arbitrary text.
Published:
Tags: developer-tools, regex, urls
Regex for Slugs: Generate and Validate URL-Friendly Strings A slug is a URL-safe version of a string — lowercase, hyphen-separated, no special characters. becomes . They appear in blog URLs, product pages, API endpoints, and Git branch names. This article covers slug validation patterns, the slug generation algorithm, Unicode handling, and length enforcement. --- What Makes a Valid Slug A standard ASCII slug: Lowercase letters only () Digits () Hyphens as word separators () No leading or trailing hyphens No consecutive hyphens Basic Slug Validation Pattern How it works: — starts with one or more lowercase letters or digits — followed by zero or more groups of: hyphen + one or more letters/digits — end of string This structure prevents: Leading hyphens: fails because the string doesn't…
All articles · theproductguy.in