How to Write SEO-Friendly URL Slugs

URLs are often overlooked in SEO, but they matter for both search engines and users. A clean, descriptive URL signals relevance and builds trust. Here's how to write slugs that help your pages rank.

What Makes a Good URL?

Compare these two URLs:

❌ example.com/p?id=12345&cat=7&ref=home
✅ example.com/blog/seo-friendly-urls-guide

The second URL tells users exactly what they'll find. It's readable, shareable, and includes relevant keywords.

URL Slug Best Practices

1. Keep It Short

Aim for 3-5 words or 50-60 characters. Shorter URLs are easier to read, share, and remember. They also display fully in search results.

❌ /how-to-create-the-best-seo-friendly-url-slugs-for-your-website
✅ /seo-friendly-url-guide

2. Include Your Target Keyword

The URL is a ranking factor, albeit a minor one. Including your primary keyword helps confirm relevance. Don't stuff keywords — one or two is enough.

3. Use Hyphens, Not Underscores

Google treats hyphens as word separators but reads underscores as word joiners. "my-page" is read as "my" and "page"; "my_page" is read as "mypage."

❌ /my_blog_post
✅ /my-blog-post

4. Use Lowercase Only

URLs are case-sensitive on many servers. /About-Us and /about-us might serve different pages — or create duplicate content issues. Stick to lowercase.

5. Remove Stop Words (Usually)

Words like "a," "the," "and," "of" add length without value. Remove them unless they're essential for meaning.

❌ /a-guide-to-the-best-practices-for-urls
✅ /url-best-practices-guide

6. Avoid Special Characters

Stick to alphanumeric characters and hyphens. Avoid spaces, ampersands, question marks, and other symbols that require URL encoding.

7. Make It Timeless

Avoid dates in URLs unless the content is genuinely time-specific (news articles, event pages). /seo-tips-2024 becomes outdated; /seo-tips remains evergreen.

Case Standards: When to Use CamelCase, snake_case, and kebab-case

Choosing the right casing for your URLs matters—not just for aesthetics, but for consistency, readability, and SEO. While search engines like Google now handle different cases similarly, users still perceive kebab-case (e.g., /seo-friendly-urls) as more readable and professional for web URLs. CamelCase (e.g., /seoFriendlyUrls) and snake_case (e.g., /seo_friendly_urls) are more common in programming or internal systems, but can appear less natural in public-facing URLs. For most content sites, especially those targeting general users, kebab-case is the recommended standard. It aligns with common web conventions (e.g., medium.com, dev.to, and most CMS outputs) and avoids confusion. Consistency across your site is key: once you choose a case style, stick with it across all URLs to prevent duplicate content issues and improve internal linking hygiene.

Avoiding Common URL Slug Mistakes

Even well-intentioned slugs can harm SEO and usability if they include common pitfalls. Avoid special characters (like !, @, #, %, &, etc.), as they may be URL-encoded and break readability or cause server errors. Steer clear of stop words (e.g., 'the', 'and', 'of') unless they significantly improve clarity—'best-seo-guide' is cleaner than 'the-best-seo-guide-for-beginners'. Also, don’t include dates in slugs unless the content is time-sensitive (e.g., news, events), as outdated URLs can erode trust over time. Finally, never reuse slugs for different pages on the same domain—this causes indexing confusion and canonicalization issues. Always double-check for accidental duplicates before publishing new content.

How URLs Fit Into Broader Accessibility and Inclusive Web Writing

Well-structured URLs contribute to accessible and inclusive web experiences—not just for users, but for assistive technologies. Screen readers often announce URL slugs verbatim; a clean, hyphen-separated slug like '/guides/alt-text-best-practices' is far more intelligible than '/p?post=876'. Additionally, when sharing links in text-based formats (e.g., emails, forums, print), readable slugs reduce cognitive load and prevent errors when users retype them. For teams writing accessible content, URL slugs should be reviewed alongside alt text, heading hierarchy, and plain-language copy. Tools like TextTools’ URL generator can help validate slugs against SEO, readability, and accessibility guidelines in real time, ensuring consistency across your content ecosystem.

4. Avoid Special Characters and Stop Words

Special characters like !, @, #, or spaces can break URLs and confuse search engines. Stick to letters, numbers, and hyphens. Also, remove common stop words (e.g., 'a', 'the', 'and') unless they're part of a brand name.

❌ /the-best-seo-practices-tips
✅ /best-seo-practices

Clean URLs feel more professional and load faster due to reduced complexity.

5. Structure URLs for Content Hierarchy

Organize slugs to reflect your site's structure. For instance,/blog/seo-tips/creating-url-slugs shows both the content type and location in your site. This helps search engines understand context and improves navigation.

❌ /category/subcategory/post
✅ /blog/seo-tips/creating-url-slugs

Avoid overly nested structures (e.g., /category/subcategory/post) unless necessary, as they can become unwieldy. Balance clarity with brevity to maintain readability.

Testing and Tools for URL Optimization

Use tools like Google's URL Inspector or third-party SEO platforms to test slug performance. Check for broken links and ensure slugs match page content.

TextTools.app offers a URL slug generator that automatically converts titles to SEO-friendly formats. Regularly audit your URLs using site crawlers to identify opportunities for simplification or keyword alignment. A/B testing different slugs can also reveal which versions perform best in search and user engagement.

Common URL Mistakes

• Dynamic parameters: ?id=123 is ugly and meaningless to users
• Category repetition: /blog/posts/article/my-post — pick one level
• Changing URLs: Once published, don't change without redirects
• Keyword stuffing: /buy-cheap-shoes-best-shoes-discount-shoes
• Trailing slashes inconsistency: Pick /page or /page/ and stick to it

URL Structure for Site Architecture

Your URL structure should reflect your site hierarchy:

example.com/category/subcategory/page
example.com/blog/topic/article-title
example.com/products/category/product-name

Keep hierarchy shallow — no more than 3 levels deep when possible.