Blog · 2026-03-10

Slugs in URLs: filesystem limits, Unicode, and SEO pragmatism

Lowercase, hyphens, and length caps keep routes portable across CDNs, Git branches, and analytics exports.

routingseoslug

Avoid surprise collisions

Reserved words (`api`, `admin`, locale codes) should be blocked automatically when generating marketing paths.

Keep redirects when renaming

Rename slugs with 301 maps so external bookmarks and newsletter links survive content refreshes.

Try these tools next

  • Slug Generator — Turn headlines into clean URL slugs.
  • Branch Name Slugger — Client-side branch name slugger — runs locally in your browser for speed and privacy.
  • Slug Collision Checker — Client-side slug collision checker — runs locally in your browser for speed and privacy.

Back to all tools or browse the blog index.