Slug Generator

A URL slug is the human-readable, URL-safe part of a web address that identifies a specific page. It appears at the end of the URL path — for example, in https://example.com/blog/how-to-bake-bread, the slug is how-to-bake-bread. Slugs replace raw titles, IDs, or query strings with clean, descriptive text that both search engines and visitors can read at a glance.

Slugs matter because search engines like Google use the words in a URL as a ranking signal. A slug that contains the target keyword is more likely to match a user's search query than a string of numbers or random characters. Beyond SEO, clean slugs improve click-through rates in search results and social shares because readers trust and recognise what they are clicking on before they arrive.

URL slugs must follow a strict character set: only lowercase letters, digits, and a separator (usually a hyphen) are allowed. Spaces, punctuation, accented characters, and symbols must all be removed or converted. This slug generator automates every one of those transformations so you get a production-ready slug with a single click.

Content management systems such as WordPress, Ghost, and Shopify generate slugs automatically, but they sometimes produce suboptimal results — for example, leaving in stop words or choosing underscores over hyphens. This tool gives you full control: choose your separator, decide whether to strip numbers, and cap the slug at a maximum character length to keep URLs tidy.

This slug generator applies a precise, ordered sequence of text transformations to convert any arbitrary input into a valid URL slug. Understanding each step helps you predict the output and choose the right settings for your use case.

1. Lowercase conversion — When the "Convert to lowercase" option is enabled, the entire input is first converted to lowercase. This is recommended for almost every use case because URLs are technically case-sensitive and a lowercase-only policy prevents duplicate-content issues.
2. Diacritic removal — The text is Unicode-normalized to NFD (Canonical Decomposition) form, which splits accented characters into a base letter plus a combining accent mark. The accent marks (code points U+0300–U+036F) are then stripped, converting letters like é → e, ñ → n, and ü → u.
3. Number removal (optional) — If the "Remove numbers" checkbox is checked, all digit characters 0–9 are deleted from the string.
4. Special character removal — All characters that are not a-z, A-Z, 0-9, or a whitespace character are stripped. This removes punctuation, symbols, and any remaining Unicode characters.
5. Space-to-separator replacement — Runs of one or more whitespace characters are collapsed and replaced with the chosen separator (hyphen, underscore, dot, or nothing).
6. Consecutive separator collapse — Multiple adjacent separators are reduced to a single separator, preventing double-hyphens that can arise when two special characters appeared side-by-side in the original text.
7. Leading/trailing separator trim — Any separator at the very start or end of the slug is removed.
8. Max-length truncation (optional) — If a maximum length greater than zero is specified, the slug is truncated to that many characters and any trailing separator created by the cut is removed.

The separator is the character placed between words in a slug. Your choice has a measurable impact on SEO, readability, and compatibility with different platforms.

For almost every web and SEO use case, the hyphen is the industry-standard choice. Google's own documentation and John Mueller have confirmed that hyphens are the preferred word separator in URLs. Reserve underscores for programming contexts such as Python module names, JavaScript variable slugs used as identifiers, or database column names where underscores are convention.

A well-crafted URL slug is one of the simplest on-page SEO wins available. Search engines read the slug, and users see it in the browser bar and in search result snippets. Follow these principles to get the most value from every URL you publish.

Include the target keyword. Place your primary keyword in the slug as close to the domain root as possible. A page at /blog/best-running-shoes signals the topic far more clearly than /blog/post-4231. This keyword appears in the URL shown in search results, which boosts click-through rate even when rankings are similar.

Keep it short. Shorter slugs are easier to read, share, and remember. Google's guidelines suggest keeping URLs concise; most SEO practitioners recommend 3–5 words. This tool's Max Length field lets you enforce a character cap automatically — a common target is 50–60 characters.

Remove stop words. Articles and prepositions like "a", "the", "of", "in", and "for" rarely add ranking value. For example, "how-to-bake-bread" is stronger than "how-to-bake-a-loaf-of-bread". Trim them from the input before generating your slug.

Use lowercase only. URLs are technically case-sensitive. /Blog/Post and /blog/post can resolve as different pages, creating duplicate-content issues. Always enable the "Convert to lowercase" option (it is on by default in this tool).

Avoid dates unless necessary. Including a year or date in the slug (e.g. /2024/how-to-do-x) makes the content appear stale when the year passes. Evergreen pages perform better without a date in the path.

Never change a live slug without a 301 redirect. Once a URL is indexed, changing its slug without a permanent redirect destroys accumulated link equity and causes 404 errors. Plan your slug carefully before publishing.

Slug generation is needed far beyond blogging. Developers, content teams, and marketers encounter slug requirements across a wide range of systems.

Content Management Systems

WordPress, Drupal, Contentful, and Sanity all use slugs as the primary URL identifier for posts and pages. While these systems auto-generate slugs, they often include stop words or choose poor separators. Generating slugs manually with precise settings gives editors more control before publishing.

E-commerce Product URLs

Shopify, WooCommerce, and Magento build product page URLs from slugs. A product titled "Nike Air Max 270 — Men's Running Shoe (White/Blue, Size 10)" needs to become something like nike-air-max-270-mens-running-shoe — concise, keyword-rich, and free of characters that break URL parsing.

JavaScript and Programming IDs

Front-end frameworks often use slugs as component keys, CSS class suffixes, or routing path segments. Generating consistent slugs from user-entered strings ensures no two records share an ID and that the ID is safe to embed in HTML attributes without escaping.

File and Folder Naming

When saving images, PDFs, or other assets to a web server, the file name becomes part of the URL. Consistent slug-style naming (e.g. product-brochure-2024.pdf) makes assets easier to discover, version, and reference in code.

API Endpoints and REST Resources

REST API design conventions favour kebab-case or snake_case slug-style paths for resource identifiers. A slug generator with underscore support makes it easy to produce names that conform to both API design guidelines and language-specific naming conventions.