Why use a slug generator?
A slug is the readable part of a URL that identifies a page. A good slug improves SEO, facilitates sharing, and makes your URLs memorable.
Three benefits of an optimized slug:
- Better SEO → Google prefers readable URLs containing keywords
- Easier sharing → A clean URL inspires trust and generates more clicks
- Simplified maintenance → Consistent slugs make content management easier
How to use the generator in 3 steps
Step 1: Enter the title
Paste or type the title of your article, product page, or category:
Email Deliverability Audit 2025 - Complete Guide
Step 2: Generate the slug
Click "Generate". The text is automatically transformed:
- Lowercase applied
- Accents removed (é → e, ç → c)
- Spaces and hyphens converted to single hyphens
- Special characters removed
Step 3: Copy and use
Result:
email-deliverability-audit-2025-complete-guide
Copy the slug and paste it into your CMS (WordPress, Webflow, etc.) or use it directly in your code.
What is a slug?
In web development, a slug is the textual identifier of a resource in a URL. It replaces numeric identifiers with readable words.
Comparison:
| URL type | Example |
|---|---|
| With numeric ID | captaindns.com/blog/post/12345 |
| With slug | captaindns.com/blog/email-deliverability-audit |
An optimized slug:
- Contains only lowercase letters, numbers, and hyphens
- Has no special or accented characters
- Is readable by both humans and search engines
SEO best practices for slugs
| Recommendation | Example |
|---|---|
| Relevant keywords first | spf-record-check rather than check-spf-record |
| Avoid stop words | dkim-guide rather than the-guide-to-dkim |
| Keep it concise | 3-6 words maximum |
| Use hyphens | my-article (not my_article or myarticle) |
| All lowercase | dmarc-policy (not DMARC-Policy) |
Transformation examples
| Input | Generated slug |
|---|---|
What is SPF? | what-is-spf |
DKIM: Complete Guide 2025 | dkim-complete-guide-2025 |
DNS Lookup: A, AAAA, CNAME & Co. | dns-lookup-a-aaaa-cname-co |
Avoid Spam - 10 Tips | avoid-spam-10-tips |
Professional Email Hosting | professional-email-hosting |
Points to consider
| Situation | Recommendation |
|---|---|
| Duplicates | Your CMS should handle uniqueness (add -2, -3, etc.) |
| Existing URLs | Don't change a published slug without a 301 redirect |
| Non-Latin languages | Verify transliteration (Japanese, Arabic, etc.) |
| Sensitive terms | Avoid words that might be filtered |
FAQ - Frequently asked questions
Q: Does the slug affect SEO?
A: Yes. Google uses the URL as a relevance signal. A slug containing your keywords improves ranking and click-through rates in search results.
Q: Can I change a slug after publishing?
A: Technically yes, but it's not recommended. You'd lose acquired backlinks and SEO. If necessary, create a 301 redirect to the new URL.
Q: What's the maximum slug length?
A: There's no strict technical limit, but stay under 60-70 characters for better readability in search results.
Q: Are underscores acceptable?
A: Technically yes, but hyphens are preferred. Google treats hyphens as word separators, not underscores (my-article = 2 words, my_article = 1 word).
Complementary tools
| Tool | Purpose |
|---|---|
| Case Converter | Convert text to uppercase or lowercase |
| Base64 Encoder | Encode or decode a Base64 string |
| Word Counter | Count words and characters in text |
| SPF Inspector | Check your SPF record |
Privacy commitment
Your input is sent to the CaptainDNS API solely to generate the slug. No content is retained. Only anonymous technical metrics are logged (character count, processing time).