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.
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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. Slug Generation Algorithm Validation tells you whether a string is a valid slug. Generation creates a slug from arbitrary text. JavaScript Implementation The + accent mark removal step is key for non-ASCII input. NFD decomposition splits a character like into + the combining accent mark . The accent mark then falls in the range and gets removed, leaving the base character. Python Implementation --- Unicode Slugs For international…
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