URL Slug Generator

What does the URL Slug Generator do?

The URL Slug Generator & Text Slugifier transforms titles, headlines, product names, and multiline text lists into clean, SEO-optimized URL slugs. It automatically transliterates Unicode accented characters (such as converting café to cafe), removes illegal URI symbols, normalizes spacing with customizable delimiters (-, _, .), strips filler stop words (a, the, and, or), and enforces word-safe maximum character length constraints.

Core Concepts

Key principles for SEO-friendly URL permalinks:

• Unicode Transliteration & Normalization: Strips accents, umlauts, and diacritics via Unicode NFKD normalization to prevent broken links and URL encoding bloat (e.g. %C3%A9).
• Hyphen Standardization: Major search engines treat hyphens (-) as standard word separators in web addresses, whereas underscores (_) join words together into a single term.
• Stop Words Optimization: Removing filler words like in, for, the, and with produces cleaner, shorter URLs with higher keyword density.
• Word-Safe Truncation: Truncating URLs at exact character limits without splitting words prevents broken keywords at the end of a slug.

How to use the tool?

1. Enter Text or Headlines: Type or paste a single headline or multiple lines of text into the editor.
2. Configure Options: Choose your preferred word separator (- or _), casing mode, toggle stop-words removal, or set a maximum character length limit.
3. Copy or Download: Click Generate URL Slug to copy the generated permalink or download a batch list of slugs.

Related Developer Utilities

If you work with text processing, SEO optimization, and web URLs, explore these complementary tools:

• URL Encoder: Encode reserved URI characters and query parameters into standard percent-encoding.
• URL Decoder: Decode percent-encoded URLs and query string parameters.
• Text Case Converter: Convert strings between camelCase, snake_case, PascalCase, and kebab-case.
• Whitespace & Blank Line Cleaner: Clean irregular whitespace and trailing spaces from text blocks.

REST API Integration

Blueutils provides a free REST API endpoint (POST https://blueutils.com/api/text/slug-generator) to programmatically generate clean URL slugs for headless CMS publishing, CI/CD build scripts, and automated AI agent workflows.

API Request Parameters

API Request Payload Examples

cURL

curl -X POST https://blueutils.com/api/text/slug-generator \
  -H "Content-Type: application/json" \
  -d '{
    "rawText": "The 10 Best Practices for Building Modern Web Applications & APIs in 2026!",
    "options": {
      "separator": "-",
      "removeStopWords": true,
      "maxLength": 60
    }
  }'

Python

import requests

url = "https://blueutils.com/api/text/slug-generator"
payload = {
    "rawText": "The 10 Best Practices for Building Modern Web Applications & APIs in 2026!",
    "options": {
        "separator": "-",
        "removeStopWords": True
    }
}
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.json())

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        String jsonPayload = """
            {
                "rawText": "The 10 Best Practices for Building Modern Web Applications & APIs in 2026!",
                "options": {
                    "separator": "-",
                    "removeStopWords": true
                }
            }
            """;

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://blueutils.com/api/text/slug-generator"))
            .header("Content-Type", "application/json")
            .POST(HttpRequest.BodyPublishers.ofString(jsonPayload))
            .build();

        HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

API Response Parameters

API Response Payload Examples

Success Response (HTTP 200 OK)

{
  "isValid": true,
  "isBatch": false,
  "total": 1,
  "slug": "10-best-practices-building-modern-web-applications-and-apis-2026",
  "slugs": [
    {
      "line": 1,
      "input": "The 10 Best Practices for Building Modern Web Applications & APIs in 2026!",
      "slug": "10-best-practices-building-modern-web-applications-and-apis-2026"
    }
  ]
}

Validation Failure Response (HTTP 400 Bad Request)

{
  "isValid": false,
  "error": "Input text cannot be empty."
}

Rate Limit Exceeded Response (HTTP 429 Too Many Requests)

{
  "error": "API rate limit exceeded. Please wait or contact support@blueutils.com."
}

Why use an API to generate URL slugs?

Integrating the URL Slug Generator API into headless CMS platforms, static site generation pipelines, or AI agents provides key benefits:

• Headless CMS & Microservice Permalinks: Standardizes permalink generation across polyglot microservice backends (Go, Python, Java, Rust) without maintaining separate slugify libraries in each language.
• AI Agent Content Generation: Ensures AI blogging and documentation agents produce valid, deterministic, SEO-friendly permalinks without illegal symbols.
• Static Site Build Hooks: Automatically generates permalinks from frontmatter titles during CI/CD markdown compilation (Hugo, Astro, Eleventy).

Native Usage

How to generate URL slugs natively across various environments:

Linux / Unix (Bash with sed & tr)

# Generate URL slug in Bash
TITLE="The 10 Best Practices for Building Web Apps in 2026!"
echo "$TITLE" | tr '[:upper:]' '[:lower:]' | sed -E 's/[^a-z0-9]+/-/g' | sed -E 's/^-+|-+$//g'

Windows (PowerShell)

# Generate URL slug in PowerShell
$title = "The 10 Best Practices for Building Web Apps in 2026!"
$slug = ($title.ToLower() -replace '[^a-z0-9]+', '-').Trim('-')
Write-Host $slug

Windows (Command Prompt)

:: Quick PowerShell one-liner in Command Prompt
powershell -Command "('The 10 Best Practices in 2026!'.ToLower() -replace '[^a-z0-9]+', '-').Trim('-')"

Python

import re
import unicodedata

def slugify(text, separator='-'):
    text = unicodedata.normalize('NFKD', text).encode('ascii', 'ignore').decode('utf-8')
    text = re.sub(r'[^a-zA-Z0-9\s_-]', '', text).lower()
    return re.sub(r'[\s_-]+', separator, text).strip(separator)

print(slugify("The 10 Best Practices for Web Apps!"))

Java

import java.text.Normalizer;

public class SlugifyExample {
    public static String toSlug(String input) {
        String normalized = Normalizer.normalize(input, Normalizer.Form.NFD);
        return normalized.replaceAll("\\p{InCombiningDiacriticalMarks}+", "")
            .toLowerCase()
            .replaceAll("[^a-z0-9\\s-]", "")
            .trim()
            .replaceAll("[\\s-]+", "-");
    }
}