Text Case in URLs – SEO Best Practices
Published 2026-02-17 · convertcase.in
URL case can affect your SEO if you get it wrong. Here are the rules every site owner and developer needs to know.
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1Rule 1: Always Lowercase
Some servers treat /Page and /page as different URLs, creating duplicate content issues. Always use lowercase URLs.
2Rule 2: Hyphens Not Underscores
Google treats hyphens as word separators. "convert-case-tool" → Google reads as 3 separate words. "convert_case_tool" → read as one word.
3Rule 3: No Spaces
Spaces in URLs become %20 which is ugly and can break. Always use hyphens instead.
4Generate URL Slugs
Use convertcase.in to convert any title to a clean, SEO-friendly URL slug.
Frequently Asked Questions
Does URL capitalisation affect SEO?
Yes — mixed case URLs can cause duplicate content issues. Stick to all-lowercase URLs.