Slug Generator

What is a slug generator?

A slug generator turns a page title into a clean, URL-safe slug — the human-readable part of a web address, like blue-widgets in example.com/blog/blue-widgets. You type a title such as a blog headline or product name, and the tool returns a lowercase string with spaces and symbols replaced by hyphens (or underscores) and nothing left that could break a link. It saves you from hand-editing every title into a tidy URL.

This tool sits in the generators collection and runs fully in your browser. The slug updates live as you type, so you can paste a heading and copy the result in seconds.

What does this tool do?

It converts free text into a single slug using one consistent method. You give it a title and pick a separator — a hyphen (-) or an underscore (_) — and it produces a lowercase, accent-free, symbol-free string suitable for a URL path, a filename or a route key. There is no setup and no upload: the conversion happens locally and refreshes on every keystroke.

A good slug matters because it is part of the URL itself. Clean slugs are easier to read, easier to share, and they put your keywords directly in the address, which both people and search engines see. A messy URL full of %20, query symbols or capital letters is harder to read aloud, more likely to break when copied, and less descriptive in search results.

How does it work?

The generator runs a fixed pipeline on your text. The steps always happen in this order, which is what makes the output predictable:

1. Lowercase — every letter is converted to its small form, so Best Tools and BEST TOOLS both become best tools.
2. Remove accents — accented characters are reduced to their base Latin letter, so é becomes e, ñ becomes n and ü becomes u. The accent marks are stripped out entirely.
3. Replace non-alphanumeric runs — any unbroken run of characters that are not letters a-z or digits 0-9 (spaces, punctuation, symbols, emoji) is replaced by a single instance of your chosen separator. A whole run becomes one separator, not one per character.
4. Trim separators — leading and trailing separators are removed, and any duplicate separators are collapsed to one, so you never get --, a slug that starts with a hyphen, or one that ends with a dangling separator.

The separator is whichever character you select: a hyphen for web URLs or an underscore for filenames and code. Because digits are alphanumeric, numbers in your title survive untouched; only the gaps and symbols between them are converted. There is no AI and no network call — just deterministic string processing, so the same title with the same separator always gives the same slug.

Examples

Each example follows the four steps above exactly, so you can reproduce them in the tool.

Example 1 — a messy title with symbols and a year (separator = hyphen):

• Input: 10 Best Free Online Tools (2026 Edition)!
• The text is lowercased, the parentheses, exclamation mark and spaces become runs of non-alphanumeric characters, each replaced by a hyphen, and the trailing separator is trimmed.
• Output: 10-best-free-online-tools-2026-edition

Example 2 — the same title with underscores (separator = underscore):

• Input: 10 Best Free Online Tools (2026 Edition)!
• The pipeline is identical, but each separator is an underscore instead of a hyphen.
• Output: 10_best_free_online_tools_2026_edition

Example 3 — accents and stray symbols (separator = hyphen):

• Input: Café & Crème — Brûlée!!!
• Accents are stripped (é to e, è to e, û to u), the double spaces, ampersand, em dash and triple exclamation marks each form runs that collapse to single hyphens, and the leading and trailing separators are trimmed.
• Output: cafe-creme-brulee

In every case, note that long runs of spaces or symbols never create double separators, and the slug never begins or ends with one.

Slug rules reference

This table summarises how each kind of character is handled by the pipeline. It assumes a hyphen separator.

Input characters	What the tool does	Example in to out
Uppercase letters	Lowercased	Hello to hello
Digits 0 to 9	Kept as-is	2026 to 2026
Accented letters	Reduced to base letter	Über to uber
Single space	Replaced by one separator	new post to new-post
Run of spaces or symbols	Collapsed to one separator	a & b to a-b
Leading or trailing symbols	Trimmed away	!hi! to hi

The key idea is that the slug only ever contains lowercase letters, digits and your chosen separator — nothing else can survive the process.

Common uses

A slug generator is handy anywhere a title needs to become part of an address or identifier:

• Bloggers and content teams turning post headlines into clean permalinks before publishing in WordPress, Ghost or a static-site CMS.
• Developers generating route paths, file names or database keys from user-entered titles so links stay predictable and safe.
• SEO specialists crafting short, keyword-rich URL slugs that read well in search results and are easy to share.
• E-commerce managers converting product names into tidy category and product URLs without manual cleanup.
• Documentation writers building anchor IDs and page slugs from section headings so internal links never break on a stray symbol.

Tips and common mistakes

A few habits keep your slugs clean and link-friendly:

• Prefer hyphens for web pages. Search engines treat a hyphen as a word separator but read an underscore as a word joiner, so red-shoes is two words to Google while red_shoes reads as one. Reserve underscores for filenames and code.
• Keep slugs short and meaningful. Trim filler words like “the”, “a” and “of” from the title before generating, so the slug stays focused on the main keywords rather than the full headline.
• Edit slugs before they go live, not after. Changing a slug after publishing changes the URL and can break existing links and bookmarks unless you set up a redirect, so finalise it early.
• Watch removed words. Because every symbol is dropped, a title like C# vs C++ collapses toward c-vs-c, losing the distinction between the two. Rename such titles in words (for example c-sharp-vs-c-plus-plus) before generating.
• Do not rely on accents for meaning. Since accents are stripped, two titles that differ only by an accent will produce the same slug, so give them distinct wording if both must coexist.

Limitations and notes

This generator produces lowercase, ASCII-style slugs built from the Latin alphabet, digits and a single separator. It does not transliterate non-Latin scripts — text in alphabets such as Cyrillic, Greek, Arabic or CJK is treated as non-alphanumeric and collapsed away, so a fully non-Latin title can reduce to an empty slug. It also does not remove stop words automatically, enforce a maximum length, or guarantee uniqueness against slugs you already use; check for duplicates in your own CMS or database before saving. The separator choice is limited to a hyphen or an underscore, and the four-step order (lowercase, de-accent, replace, trim) is fixed. Everything runs privately in your browser: the title is processed locally in JavaScript, so nothing you type is uploaded, logged or stored, and the tool keeps working offline once the page has loaded.

For more text and content utilities, pair this with the lorem ipsum generator for placeholder copy, the random name generator for sample titles, or the password generator for secure strings, and browse the full generators collection.