Validate slug

Check whether a URL slug uses lowercase letters, numbers, and safe hyphens.

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ToolSlug Validator
Input
Output
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How it works

The string is trimmed and checked for lowercase ASCII letters, digits, single hyphens, and non-empty boundaries. Separate findings identify uppercase characters, whitespace, punctuation, edge hyphens, and doubled hyphens.

  • Lowercase ASCII avoids case-sensitive duplicate paths.
  • Every detected issue is reported together.

Worked example

Valid Slug
Validate a well-formed URL slug
Input
											my-awesome-blog-post
Output
												Valid slug: my-awesome-blog-post

When to use this

CMS permalinks, static-site routes, and SEO URL audits validate slugs.

Edge cases

  • Accented characters are rejected rather than transliterated.
  • A leading or trailing hyphen is invalid even though internal hyphens are allowed.
  • Adjacent hyphens are reported separately from other punctuation.