Slug Generator — Free Online Tool

What is URL Slug Generator (SEO-Friendly, Lowercase, Hyphenated)?

URL slug generator converts text (titles, names) to clean, URL-safe slugs for web addresses, permalinks, file names. Transforms: 'Hello World!' → 'hello-world', 'C++ Tutorial: Part 1' → 'c-tutorial-part-1', 'Café & Restaurant' → 'cafe-restaurant'. Rules: lowercase (Hello → hello), spaces → hyphens (Hello World → hello-world), remove special characters (! ? @ # $ → removed), transliterate accents (é → e, ñ → n), remove stop words (optional: 'the', 'and', 'or' → removed), trim hyphens (--hello-- → hello), limit length (optional: max 50 chars). Useful for: blog permalinks (example.com/blog/hello-world), CMS pages (WordPress, Drupal: /about-us), API endpoints (/api/users/john-doe), file names (my-document.pdf), SEO (clean URLs rank better, readable by users/search engines).

• Lowercase conversion: ALL TEXT → lowercase. Hello World → hello-world. URLs case-insensitive in most servers (apache, nginx), but lowercase standard (SEO, consistency).
• Spaces to hyphens: Spaces → hyphens (-). 'Hello World' → 'hello-world'. Hyphens = word separators in URLs (Google treats 'hello-world' as 2 words). Underscores less common (_).
• Remove special characters: Special chars (! ? @ # $ % ^ & * ( ) + = [ ] { } | \ : ; " ' < > , . /) → removed. 'Hello, World!' → 'hello-world'. Only letters, numbers, hyphens allowed.
• Transliterate accents: Accented letters → ASCII. é → e, ñ → n, ü → u, ç → c. 'Café' → 'cafe'. URLs should be ASCII (international domains use Punycode, but slugs = ASCII for compatibility).
• Remove stop words (optional): Common words (the, and, or, of, in, to, a, an) → removed. 'The Best Coffee' → 'best-coffee'. Shorter URLs (SEO benefit: keyword-focused). Configurable (keep stop words if needed).

Why use slug generator?

Clean URLs = better SEO, user experience, sharing. example.com/blog/hello-world (readable) vs example.com/blog?p=123 (opaque).

• SEO optimization: Google: URLs with keywords rank better. /blog/javascript-tutorial vs /blog?id=123. Slugs include keywords (javascript, tutorial). Hyphens separate words (Google treats as spaces).
• Readability: Users understand URL content. /products/blue-running-shoes (clear) vs /products/SKU12345 (obscure). Share URLs: readable slugs more trustworthy (social media, emails).
• Consistency: Automated slug generation: same rules for all URLs (no manual typos). 'About Us' → 'about-us' (not 'AboutUs', 'about_us', 'ABOUT-US'). Consistent URL structure.
• Permalink stability: Slugs don't change (permalinks). /blog/my-first-post (permanent). Avoid IDs (/blog/123: breaks if database changes). Slugs = human-readable, stable.
• Avoid encoding issues: Special chars (!, ?, spaces) in URLs → percent-encoded (%20, %21). 'Hello World!' → 'Hello%20World%21' (ugly). Slugs = clean (hello-world: no encoding).
• CMS compatibility: WordPress, Drupal, Ghost: auto-generate slugs from titles. Ensure uniqueness (append -2 if duplicate). Clean URLs out-of-box (no manual sanitization).

When to use slug generator

Use when creating URLs, permalinks, file names from text.

• Blog permalinks (post title → URL slug: /blog/hello-world).
• CMS pages (WordPress, Drupal: page name → slug).
• E-commerce (product name → URL: /products/blue-running-shoes).
• API endpoints (user name → /api/users/john-doe).
• File names (document title → my-document.pdf, no spaces/special chars).
• SEO (keyword-rich URLs for better ranking).
• URL shorteners (generate readable short codes from titles).
• GitHub repos (project name → repo-slug: my-awesome-project).

How to use slug generator

Enter text, get URL-safe slug.

1. Enter text: Type or paste title/name: 'C++ Tutorial: Part 1', 'Café & Restaurant', 'Top 10 JavaScript Tips!'. Or upload .txt file (bulk generation).
2. Configure options (optional): Lowercase: ON (default, recommended). Separator: hyphen (-) or underscore (_). Remove stop words: ON (shorter slugs: 'The Best Coffee' → 'best-coffee'). Max length: 50 chars (truncate long titles).
3. Generate slug: Click Generate or auto-generate as you type. Tool applies: lowercase, replace spaces with hyphens, remove special chars, transliterate accents, remove stop words, trim hyphens.
4. View result: Original: 'C++ Tutorial: Part 1'. Slug: 'c-tutorial-part-1'. Special chars (:, +, +) removed. Spaces → hyphens. Lowercase.
5. Copy slug: Click Copy to copy slug. Paste into: WordPress permalink, Drupal URL alias, API endpoint, file name. Or export as CSV (bulk slugs).
6. Check uniqueness (if needed): If slug exists (duplicate), append number: 'hello-world-2'. Tool can check against existing slugs (database, file list). Ensure uniqueness.
7. Preview URL: See full URL: example.com/blog/c-tutorial-part-1. Test in browser (click to open). Verify slug works (no encoding issues, readable).

Key features

• Automatic slug generation: Type title → slug generated instantly. No manual editing (spaces, special chars, lowercase). Real-time preview (see URL as you type).
• Customizable separators: Hyphen (hello-world, default, SEO-friendly) or underscore (hello_world, less common). Or custom (dot: hello.world, not recommended for URLs).
• Accent transliteration: Unicode → ASCII. é → e, ñ → n, ü → u, ø → o, ç → c. Café → cafe, Señor → senor. URLs compatible (no percent-encoding: %C3%A9 → e).
• Stop word removal: Remove: the, and, or, of, in, to, a, an, for, with. 'The Quick Brown Fox' → 'quick-brown-fox'. Shorter URLs (SEO: focus on keywords). Configurable (keep if needed).
• Length limit: Truncate to max length (50, 100, 200 chars). 'This is a very long title that exceeds the limit' → 'this-is-very-long-title-exceeds' (50 chars). Prevents overly long URLs.
• Uniqueness check: Check against existing slugs (database, file). If exists, append -2, -3, etc. 'hello-world' (exists) → 'hello-world-2'. Avoid duplicate URLs.
• Bulk generation: Upload .txt, .csv (list of titles). Generate slugs for all. Download as CSV (title, slug columns). Useful for CMS migration, bulk content.

Common use cases

• Blog post permalink: Post title: 'Top 10 JavaScript Tips for Beginners'. Slug: 'top-10-javascript-tips-beginners'. URL: example.com/blog/top-10-javascript-tips-beginners. SEO-friendly (keywords: JavaScript, tips, beginners).
• WordPress page: Page name: 'About Us & Our Team'. Slug: 'about-us-our-team'. URL: example.com/about-us-our-team. WordPress auto-generates, but tool allows preview/customization.
• E-commerce product: Product: 'Nike Air Max 270 - Blue (Size 10)'. Slug: 'nike-air-max-270-blue-size-10'. URL: shop.com/products/nike-air-max-270-blue-size-10. Descriptive, SEO-optimized.
• API endpoint: User name: 'John Doe'. Slug: 'john-doe'. Endpoint: /api/users/john-doe. Clean, predictable (no ID: /api/users/12345). RESTful URL design.
• File name: Document: 'Q4 2023 Financial Report.pdf'. Slug: 'q4-2023-financial-report.pdf'. No spaces (spaces in file names = issues in shells, URLs). Lowercase, hyphenated.
• GitHub repo: Project: 'My Awesome React App'. Slug: 'my-awesome-react-app'. GitHub repo: github.com/user/my-awesome-react-app. Lowercase, hyphenated (GitHub convention).

Examples

Text to slug conversion examples.

Top 10 JavaScript Tips for Beginners!

top-10-javascript-tips-for-beginners

Café & Restaurant: Chez François

cafe-restaurant-chez-francois

The Best Coffee in the World

best-coffee-world

C++ Tutorial: Part 1 (Advanced)

c-tutorial-part-1-advanced

This is a very long blog post title that should be truncated to fit the maximum length limit

this-is-very-long-blog-post-title-should-be-truncated-fit-maximum-length

Technical reference

Slug generation rules and best practices:

Lowercase

Convert ALL text to lowercase. Hello World → hello-world. Reason: URLs case-insensitive (Linux servers: case-sensitive, but lowercase = standard). SEO: Google treats 'Hello-World' and 'hello-world' as different (duplicate content). Always lowercase.

Separator

Spaces → hyphens (-). Hello World → hello-world. Hyphens = word separators (Google treats 'hello-world' as 2 words: 'hello', 'world'). Underscores (_): Google may treat as single word (hello_world = 'helloworld'). Use hyphens for SEO.

Special characters

Remove: ! ? @ # $ % ^ & * ( ) + = [ ] { } | \ : ; " ' < > , . / ~. Keep: letters (a-z), numbers (0-9), hyphens (-). Example: 'C++ Tutorial!' → 'c-tutorial'. URLs: only safe chars (RFC 3986).

Accents/diacritics

Transliterate to ASCII. é → e, ñ → n, ü → u, ø → o, ç → c, å → a, ä → a, ö → o. Café → cafe, Señor → senor. URLs: ASCII preferred (Unicode → percent-encoded: Café → Caf%C3%A9, ugly).

Stop words

Remove (optional): the, and, or, of, in, to, a, an, for, with, on, at, by, from, as, is, was, are, were, be, been, being. 'The Best Coffee in Town' → 'best-coffee-town'. Shorter URLs (keyword-focused).

Length limit

Recommended: 3-50 chars. Max: 200 chars (Google truncates long URLs in search results). Too short (<3): ambiguous (seo → 'seo', ok). Too long (>100): hard to read, share. Truncate if needed.

Uniqueness

Ensure unique slugs (no duplicates). If exists, append counter: hello-world → hello-world-2 → hello-world-3. Check database/file system before creating.

Trim hyphens

Remove leading/trailing hyphens. --hello-world-- → hello-world. Remove consecutive hyphens: hello---world → hello-world. Clean, professional URLs.

Reserved words

Avoid: admin, login, api, cdn, www, blog, post, page (if conflicts with site structure). Example: /blog/blog (confusing). Use /blog/blogging-tips instead.

Language-specific

German: ß → ss, ä → ae, ö → oe, ü → ue (or ß → ss, ä → a). French: œ → oe. Transliteration rules vary (configure based on language). Default: remove accents (ä → a).

Common mistakes to avoid

Using underscores instead of hyphens (SEO penalty)

Why it happens: Google: hyphens = word separators (hello-world = 'hello' 'world'). Underscores = word joiners (hello_world = 'helloworld'). SEO: hyphens better (keywords recognized separately).

How to avoid it: Always use hyphens (-) for URL slugs. Underscores (_) ok for programming (variable names), not URLs. Tool default: hyphens.

Not removing stop words (long, keyword-diluted slugs)

Why it happens: 'the-best-coffee-in-the-world' vs 'best-coffee-world'. Stop words (the, in, the) add length, no SEO value. Google ignores stop words in rankings. Shorter = better.

How to avoid it: Enable stop word removal (optional). Shorter slugs (focus on main keywords). Exception: if stop word changes meaning ('to be or not to be' → 'to-be-or-not-to-be', keep 'to').

Keeping accents/special chars (percent-encoded URLs)

Why it happens: Café → Caf%C3%A9 (ugly, hard to read). URLs with non-ASCII → percent-encoded (%XX). Search engines handle it, but users confused. Share on social media: ugly links.

How to avoid it: Transliterate accents to ASCII (é → e, ñ → n). Tool does automatically. Clean, readable URLs (cafe, senor).

Not checking uniqueness (duplicate slugs)

Why it happens: Two posts: 'Hello World' → 'hello-world'. Duplicate URL (/blog/hello-world = which post?). 404 errors, confusion. CMS: auto-append -2, but manual slugs need checking.

How to avoid it: Check database for existing slugs. If exists, append number (hello-world-2). Tool can check against slug list (input existing slugs, auto-increment).

Slugs too long (>100 chars, hard to share)

Why it happens: Long URLs: hard to read, remember, share. Google truncates in search results (>50-60 chars). Twitter/social: long URLs take character limit. SEO: shorter better.

How to avoid it: Limit slug length: 3-50 chars recommended. Truncate long titles (remove words, not chars mid-word). 'this-is-very-long-title' → 'this-is-very-long' (trim at word boundary).

Frequently asked questions

Should I use hyphens or underscores in URL slugs?

Hyphens (-). Google treats hyphens as word separators (hello-world = 2 words). Underscores = word joiners (hello_world = 1 word). SEO: hyphens better for keyword recognition.

What are stop words and should I remove them?

Stop words: the, and, or, of, in, to, a, an. Removal = shorter URLs (SEO benefit: keyword-focused). Optional: keep if changes meaning ('to be or not to be').

How long should a URL slug be?

3-50 chars recommended. Google truncates long URLs (>50-60 chars in search results). Too short (<3): ambiguous. Too long (>100): hard to read, share. Focus on main keywords.

Can I change a slug after publishing?

Possible but risky. Old URL (/blog/old-slug) → 404 (broken links, SEO penalty). If change: set up 301 redirect (old-slug → new-slug). Preserve SEO, backlinks. Avoid changing if possible.

What if my slug conflicts with an existing page?

Append counter: hello-world → hello-world-2. Or add context: hello-world-2024, hello-world-tutorial. Ensure uniqueness (check database, file system).

How do I handle non-English characters (Chinese, Arabic)?

Transliterate to ASCII (if possible: é → e). Or use Punycode (Unicode domain encoding). Or keep Unicode (modern browsers support, but less compatible). Tool: ASCII recommended (compatibility).

Should I include keywords in slugs for SEO?

Yes. Keywords in URLs = minor SEO ranking factor. /blog/javascript-tutorial (keyword: javascript) vs /blog/post-123 (no keyword). Readable, keyword-rich slugs = better SEO, click-through rate.

References

• URL Slug Best Practices
• Google URL Guidelines
• WordPress Slug Generation
• SEO-Friendly URLs