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Slug Validator

Validate URL slug strings (lowercase letters, numbers, hyphens only, no special characters)

Key Facts

Category
Validation
Input Types
text, checkbox
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

The Slug Validator checks if a string is suitable for use as a URL slug, ensuring it contains only lowercase letters, numbers, and hyphens for clean, SEO-friendly links. It helps maintain consistent and safe URL structures across websites.

When to Use

  • •When creating or editing URLs for web pages, blog posts, or products to ensure they are SEO-optimized.
  • •To validate user-generated slugs in content management systems or forums before publishing.
  • •When standardizing URL formats to prevent broken links and improve site navigation.

How It Works

  • •Enter the slug string into the input field, such as 'my-blog-post' or 'product-123'.
  • •Optionally configure settings like allowing underscores or setting a maximum length.
  • •Click the validate button to instantly check if the slug meets the criteria.
  • •Receive a clear result indicating whether the slug is valid or needs correction.

Use Cases

Validating blog post permalinks to ensure they are SEO-friendly and user-readable.
Checking product page URLs in e-commerce sites for consistency and safety.
Standardizing slugs in documentation or wiki platforms to avoid special characters.

Examples

1. Validating a Blog Post Slug

Content Creator
Background
A blogger is preparing a new article and wants the URL slug to be optimized for search engines.
Problem
The draft slug 'My New Blog Post!' contains spaces and an exclamation mark, making it invalid.
How to Use
Enter 'My New Blog Post!' into the Slug field and click validate without changing any options.
Outcome
The tool flags the slug as invalid due to spaces and special characters, suggesting a corrected version like 'my-new-blog-post'.

2. Allowing Underscores in Slugs

Web Developer
Background
A developer is building a tech site where underscores are used in API endpoint slugs.
Problem
Need to validate slugs like 'api_v2_endpoint' that include underscores.
How to Use
Enter the slug, check the 'Allow Underscores' option, and validate.
Example Config
allowUnderscores: true
Outcome
Slugs with underscores are now accepted, while invalid characters like spaces are still rejected.

3. Enforcing Maximum Slug Length

SEO Specialist
Background
An SEO team aims to keep URLs short for better sharing and indexing on social media.
Problem
Some slugs are excessively long, reducing readability and shareability.
How to Use
Set the Max Length to 50 and validate slugs like 'this-is-a-very-long-slug-that-exceeds-the-limit'.
Example Config
maxLength: 50
Outcome
Slugs over 50 characters are flagged as invalid, prompting users to shorten them for optimal performance.

Try with Samples

text
URL Slug Samples
Collection of valid and invalid URL slug examples for testing (lowercase letters, numbers, hyphens, optional underscores)
title token slug
text
URL Query Analyzer Samples
Comprehensive collection of URLs with query parameters for testing URL parsing, encoding validation, and parameter extraction
matched family text
text
Test Pyramid Examples - Testing Strategy Guide
Comprehensive test pyramid implementation examples including unit tests, integration tests, E2E tests, test organization, and strategic testing patterns for balanced software quality assurance
matched family text
text
SVG Samples
Scalable Vector Graphics (SVG) samples demonstrating various SVG features and techniques
matched family text
text

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FAQ

What characters are allowed in a URL slug?

By default, only lowercase letters, numbers, and hyphens are allowed. You can optionally enable underscores.

Why is slug validation important for SEO?

Clean slugs improve readability for users and search engines, aiding in better indexing and higher rankings.

Can I set a maximum length for slugs?

Yes, you can specify a max length, with a default of 100 characters to keep URLs concise.

What happens if a slug has trailing hyphens?

Trailing hyphens are not allowed by default, but you can enable this option if your use case requires it.

Is this tool free to use?

Yes, the Slug Validator is a free online tool for validating URL slugs without any cost.

API Documentation

Request Endpoint

POST /en/api/tools/slug-validator

Request Parameters

Parameter Name Type Required Description
slug text Yes -
allowUnderscores checkbox No -
maxLength text No -
allowTrailingHyphen checkbox No -

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-slug-validator": {
      "name": "slug-validator",
      "description": "Validate URL slug strings (lowercase letters, numbers, hyphens only, no special characters)",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=slug-validator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]