Free SEO by IBS Group
Medium impactIndexing & crawl

Uppercase URLs

Case-sensitive URLs create duplicate content. Here's how to enforce lowercase site-wide.

What it means

URLs with mixed casing (/About vs /about) treated by some servers as different pages, creating duplicates.

Why it matters

Duplicate URLs split link equity and confuse Google. Some servers (Apache, custom) are case-sensitive by default.

How to fix it

  1. Enforce lowercase at the server/CDN level via rewrite rules.
  2. 301 redirect mixed-case URLs to lowercase canonicals.
  3. Audit internal links for inconsistent casing.

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Frequently asked questions

Are uppercase URLs technically wrong?

Not invalid, but inconsistent. Pick lowercase and enforce it.

Related issues

Missing Canonical Tag
Without canonical tags, Google can index duplicate URLs and split your ranking signal. Here's how to add them right.
Duplicate Content
Identical or near-identical content on multiple URLs splits ranking signal. Here's how to resolve it.