URL Slug Generator
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Détails techniques
How the URL Slug Generator Works
What the Tool Does
The Slug Generator converts arbitrary text into URL-friendly slugs by lowercasing the input, replacing spaces and special characters with hyphens, removing characters that are not alphanumeric or hyphens, and collapsing consecutive hyphens. The result is a clean, readable string safe for use in URLs, file names, and CSS class names. For example, "Hello World! (2024)" becomes "hello-world-2024".
Common Developer Use Cases
Developers use slug generators when building CMS platforms, blog engines, or e-commerce sites that derive URL paths from user-supplied titles. Consistent slugging ensures that page URLs are stable, human-readable, and free of characters that require percent-encoding. It is also useful for generating CSS class names, database column values, and file system paths from dynamic content.
Data Formats, Types, or Variants
Basic slugs use only ASCII lowercase letters, digits, and hyphens. Extended slugging can preserve Unicode letters (e.g., accented characters transliterated to ASCII equivalents) for multilingual content. Some implementations allow underscores instead of hyphens. The maximum safe slug length for URLs is typically 75–100 characters, though this varies by platform.
Common Pitfalls and Edge Cases
Two different titles can produce the same slug (e.g., "Foo Bar" and "Foo-Bar" both become "foo-bar"), so applications must handle slug collisions by appending a numeric suffix. Non-Latin scripts require transliteration before slugging or the output will be empty. Leading and trailing hyphens should be trimmed. Changing the slug of a published page breaks inbound links, so slugs should be treated as immutable after publication.
When to Use This Tool vs Code
Use this browser tool for quick one-off slug generation during content creation or prototyping. For production applications, generate slugs programmatically using libraries like slugify (JavaScript/Python) or Stringex (Ruby) so collision detection, Unicode transliteration, and length limits are handled consistently in your application logic.