Question 1

What is a URL slug?

Accepted Answer

A URL slug is the human-readable part of a URL that identifies a specific page. For example, in https://example.com/blog/hello-world, the slug is 'hello-world'. Slugs are lowercase, use hyphens instead of spaces, and contain only URL-safe characters. They improve SEO by making URLs descriptive and readable for both users and search engines.

Question 2

How does the slugify tool handle Unicode and special characters?

Accepted Answer

The tool transliterates Unicode characters to their ASCII equivalents where possible — for example, 'café' becomes 'cafe', 'über' becomes 'uber', and 'naïve' becomes 'naive'. Special characters like punctuation, symbols, and characters with no ASCII equivalent are removed when strict mode is enabled, or replaced with the separator otherwise. This ensures slugs are universally compatible with all web servers and browsers.

Question 3

What is strict mode in slug generation?

Accepted Answer

Strict mode removes all characters that are not alphanumeric or the chosen separator, producing the cleanest possible slugs. With strict mode off, some special characters may be retained if they are URL-safe. For most SEO and permalink use cases, strict mode is recommended to ensure maximum compatibility and consistency across different systems and languages.

Question 4

Which separator should I use for URL slugs?

Accepted Answer

Hyphens (-) are the recommended separator for URL slugs according to Google's SEO guidelines — search engines treat hyphens as word separators, improving keyword recognition. Underscores (_) are treated as word joiners by some search engines, making 'hello_world' a single token rather than two words. Dots (.) are used in some CMS systems but can be confused with file extensions. Use hyphens unless your platform requires a different convention.

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