Slugify String

How to use this slugify tool

1. Type any title, sentence, or phrase.
2. It's converted to lowercase, accents removed, spaces replaced with hyphens.
3. Use the result as a URL path, filename, or database identifier.

What is a slug?

A slug is the URL-friendly version of a string — no spaces, no special characters, all lowercase. It's what you see after the domain in a blog post URL, like example.com/my-awesome-blog-post.

How accent stripping actually works — Unicode normalization

Removing accents from a character like "é" isn't done through a simple lookup table mapping each accented letter to its plain equivalent — it relies on a specific Unicode feature called normalization. Unicode's NFD (Normalization Form Decomposed) form can represent an accented character as two separate pieces: the base letter (e) plus a separate, invisible "combining diacritical mark" character representing just the accent. Once text is decomposed this way, stripping accents becomes straightforward: simply filter out every character in the combining-marks Unicode category, leaving only the plain base letters behind. This is precisely why accent removal works correctly and consistently across virtually any accented Latin character (é, ñ, ü, ç, and many others) rather than needing a separate, manually maintained rule for each individual accented letter.

Why slug quality is a genuine, measurable SEO factor

A URL's slug isn't purely cosmetic — search engines do factor readable, keyword-relevant URLs into how they understand and rank a page, and slug quality is one of the more overlooked, easy technical SEO wins available. A slug like /best-budget-laptops-2026 gives both users and search engines an immediate, accurate signal about the page's actual topic before they've even clicked through, while an auto-generated slug like /post?id=48291 conveys no topical information whatsoever. Beyond the ranking signal itself, a descriptive, readable slug also measurably improves click-through rate from search results, since it appears directly in the URL line shown alongside the page's title and description in search listings, giving searchers one more concrete, legible signal about relevance before deciding whether to click.

Why changing a published slug is a bigger decision than it seems

Once a slug has actually been published and indexed by search engines or linked to from other sites, changing it later is a meaningfully bigger decision than simply editing a title, because the URL itself becomes the permanent address other things depend on. Changing a live slug without a proper redirect breaks every existing external link and bookmark pointing to the old URL, and it also resets whatever search ranking history and backlink equity had already accumulated at that specific URL, effectively starting over from zero for search engines. The standard, correct practice when a slug genuinely must change is setting up a 301 permanent redirect from the old URL to the new one, which preserves the bulk of the accumulated SEO value while still allowing the actual URL text to be updated — this is exactly why getting a slug right from the start, before publishing, is worth the small extra care it takes.

Why slugs need a collision strategy, unlike auto-incrementing database IDs

Unlike a simple auto-incrementing numeric database ID, which is guaranteed unique by definition since the database itself assigns the next available number, a slug is derived from human-written, unpredictable text — and two different pieces of content can very plausibly generate the identical slug (two separate blog posts both titled "Getting Started," for instance). Systems that rely on slugs as unique identifiers need an explicit strategy for this collision case, commonly appending a short numeric suffix ("getting-started-2") or the underlying database ID itself to the slug when a duplicate is detected. This is a genuinely important consideration to plan for upfront in any system using slugs as identifiers, rather than an edge case that can be safely ignored until it unexpectedly happens in production.

Limitations of this tool

This tool converts a string to lowercase, strips accents using the Unicode normalization approach described above, and replaces spaces and unsafe characters with hyphens, producing a URL-safe slug entirely in your browser. It doesn't check whether a generated slug already exists elsewhere in your specific system or database — that collision detection, as covered above, needs to happen in your own application logic, since this tool has no knowledge of your existing content. It also doesn't translate non-Latin scripts (like Cyrillic, Arabic, or Chinese characters) into a Latin-alphabet phonetic slug — it strips accents from Latin-based characters but doesn't perform transliteration between entirely different writing systems.