Free Slug Generator
Convert strings into SEO-friendly URL slugs. Free online tool for bloggers.
Free Slug Generator — Create SEO-Friendly URL Slugs Instantly
Convert any article title, heading, or string into a clean, SEO-friendly URL slug in one click. Choose your separator, remove stop words, and generate slugs that search engines and readers both understand. Free, instant, and no signup needed.
What Is a URL Slug?
A URL slug is the part of a web address that comes after the domain name and identifies a specific page. For example, in the URL:
https://ultimatetools.tech/free-slug-generator
The slug is: free-slug-generator
Slugs are typically lowercase, use hyphens instead of spaces, and strip out special characters and punctuation. They tell both the reader and the search engine exactly what a page is about before they even open it.
How to Use the Slug Generator
- Type or paste your article title or heading into the input box.
- Select your preferred Separator: Hyphen (-) is the standard for SEO and the recommended default.
- Keep Remove Stop Words checked if you want a clean, keyword-focused slug, or uncheck it if you need every word preserved.
- Click Generate SEO Slug and copy the result into your CMS or URL field.
Hyphen vs. Underscore: Which Separator Should You Use?
This is one of the most common questions about URL formatting, and Google has actually addressed it directly. Hyphens are treated as word separators, meaning "free-slug-generator" is read as three separate words: "free", "slug", and "generator." Underscores, on the other hand, are treated as connectors, meaning "free_slug_generator" is read as one single compound word.
For SEO purposes, always use hyphens unless you have a specific technical reason not to. The hyphen default in this tool follows that best practice automatically.
| Separator | How Google Reads It | Recommended For |
|---|---|---|
| Hyphen (-) | Treats each word separately | All standard blog posts, landing pages, and product pages |
| Underscore (_) | Treats the whole phrase as one word | Specific technical contexts, legacy URL structures already using underscores |
What Are Stop Words and Should You Remove Them?
Stop words are common, low-value words that search engines largely ignore when reading URLs. Words like "a," "the," "and," "in," "for," "is," and "of" add length to a slug without adding keyword relevance.
For example:
- Title: How to Create a Better Website in 2026
- Slug with stop words: how-to-create-a-better-website-in-2026
- Slug without stop words: create-better-website-2026
The shorter version is cleaner, easier to read, and focuses on the actual keywords. Removing stop words is generally the right choice for blog posts and landing pages. Keep them only when removing them changes the meaning of the slug or makes it confusing to read.
What Makes a Good URL Slug?
Google's own documentation recommends using simple, descriptive, readable URLs. Here are the key rules every good slug follows:
- Lowercase letters only — uppercase characters can cause duplicate content issues on some servers
- Words separated by hyphens, not spaces or underscores
- No special characters, punctuation, or symbols
- Short and descriptive, ideally between 3 and 5 words
- Contains the main keyword for the page
- No dates or numbers unless they're genuinely relevant, as they make slugs harder to update later
Good slug: /best-free-seo-tools
Bad slug: /the-10-best-and-most-useful-free-seo-tools-you-should-try-in-2026
Real-World Examples
| Article Title | Generated Slug |
|---|---|
| How to Bake Sourdough Bread at Home | how-to-bake-sourdough-bread-at-home |
| 10 Best Free SEO Tools for Bloggers | best-free-seo-tools-bloggers |
| What Is Machine Learning? | what-is-machine-learning |
| How to Create a Better Website 2026 | create-better-website-2026 |
Who Uses a Slug Generator?
- Bloggers and content creators generating consistent, keyword-rich URLs for every post without having to manually format them
- Web developers creating clean slugs for database entries, routes, or CMS page titles during build
- SEO specialists auditing and reformatting messy legacy URLs across a website
- E-commerce managers creating readable, keyword-relevant product and category page URLs
Frequently Asked Questions
What is a URL slug?
A URL slug is the part of a web address that identifies a specific page, appearing after the domain name. For example, in "ultimatetools.tech/free-slug-generator," the slug is "free-slug-generator." It should be lowercase, use hyphens to separate words, and clearly describe the page content.
Why should I use hyphens and not underscores in a URL slug?
Google treats hyphens as word separators and underscores as word connectors. A slug using underscores is read as a single compound word by search engines, which reduces keyword visibility. Hyphens are the SEO standard and the recommended format for all standard web pages.
What are stop words and why remove them?
Stop words are common words like "a," "the," "and," "in," and "for" that search engines largely ignore in URLs. Removing them produces shorter, more keyword-focused slugs that are easier to read and share.
Does a URL slug affect Google rankings?
Yes, to a meaningful extent. Including your target keyword in the slug helps both search engines and users understand what the page is about before visiting it. Google's documentation recommends descriptive, simple URLs as part of good SEO practice.
How long should a URL slug be?
Aim for 3 to 5 words, generally around 30 to 60 characters. Short slugs are easier to read, share, and remember. Overly long slugs dilute keyword focus and look unprofessional.
Can I change a slug after publishing?
Yes, but doing so requires setting up a 301 redirect from the old URL to the new one, otherwise any links pointing to the original page will break and you'll lose the SEO value those links carried.
Is this Slug Generator free?
Yes, completely free with no signup, no usage limits, and no hidden charges.