Writing SEO-Friendly Slugs: A 5-Minute Checklist

What makes a slug good

A slug is the part of the URL after the domain. Google uses it as a ranking signal and users use it to decide whether to click.

The checklist

1. Lowercase everything. Mixed case creates duplicate-content risk.
2. Use hyphens, not underscores. Google splits on hyphens.
3. Skip stop words. "the", "a", "of" add length without meaning.
4. Match the H1 intent. The slug should echo what the page is about.
5. Keep it under 60 characters. Long slugs get truncated in SERPs.

Turn any title into a slug

Paste a headline into our Slug Generator to get a clean, SEO-friendly URL in one click.

Why slugs still matter

A slug is a small ranking signal, but it is a large usability signal. It appears in the search result under the title, in the browser tab when the page has not loaded, in shared links on messaging apps, and in analytics reports where a clear slug saves you from decoding IDs. A readable URL also earns more clicks when pasted raw into a chat or an email, because the reader can tell what the link is before clicking.

Common slug mistakes

• Dates and IDs that will not age well. /2024-guide-to-title-case looks stale in 2026 and forces either a redirect or a misleading URL.
• Keyword stuffing. /title-case-converter-online-free-tool-best reads as spam and adds nothing a crawler will use.
• Mirroring folder structure. Deep paths such as /tools/text/case/converters/title add no meaning; keep hierarchy shallow.
• Stop-word soup. /how-to-convert-your-text-into-title-case-online says the same thing as /title-case-converter in three times the space.
• Trailing-slash inconsistency. Serving both /page and /page/ without a canonical creates duplicates.
• Uppercase letters. URLs are case-sensitive after the domain, so /Title-Case and /title-case are two different pages to a crawler.

Changing a slug on a live page

Never edit a published slug without a redirect. The old URL holds every link and every ranking signal the page has earned. The safe sequence is:

1. Publish the page at the new slug.
2. Add a permanent 301 redirect from the old URL to the new one.
3. Update internal links so they point at the new URL directly rather than through the redirect.
4. Update the sitemap and resubmit it.
5. Leave the redirect in place indefinitely; external links never get updated.

If the change is purely cosmetic — trimming a stop word, for example — the safest decision is usually to leave the slug alone. The gain is small and the risk is not.

Slugs in other languages

Non-Latin slugs are valid and often better for users who read that script, but they are stored as percent-encoded text and become unreadable when copied into plain-text contexts. Transliteration is the usual compromise. Whichever you choose, keep it consistent across the site and make sure the canonical tag matches the served form exactly.

A five-second final check

Read the slug aloud without the domain. If a colleague can tell you what the page is about, it is a good slug. If they cannot, no amount of keyword tuning will fix it. Generate a clean version of any headline with our Slug Generator.