URL-Friendly String Converter
Convert complex text into clean, SEO-friendly URLs. Supports custom separators, transliteration, and path modes. Free and client-side.
About
This tool transforms raw text strings into safe, URL-friendly formats - often called slugs. Unlike simple search-and-replace scripts, this engine uses a multi-stage cleaning process. It first normalizes unicode characters (separating letters from diacritics), applies a custom transliteration map for non-Latin scripts (like Cyrillic or Germanic), and finally sanitizes the structure based on RFC-3986 standards.
Valid URLs are critical for SEO (Search Engine Optimization) and user readability. A dirty URL like /Product Name (New!) can break server routing or look unprofessional. This converter ensures your links are deterministic, clean, and safe for browsers.
Formulas
The conversion pipeline follows a strictly ordered set of operations to ensure data integrity:
Where the normalization process is defined as:
This separates combined graphemes (like é) into their base letter (e) and combining mark (´), allowing the regex engine to discard the mark while keeping the legible character.
Reference Data
| Character Type | Input Example | Clean Output | Logic Applied |
|---|---|---|---|
| Diacritics | Crème Brûlée | creme-brulee | NFD Normalization |
| Germanic | Großglockner | grossglockner | Literal Expansion |
| Cyrillic | Привет мир | privet-mir | Transliteration Map |
| Symbols | C++ & C# | c-plus-plus-and-c-sharp | Smart Replacement |
| Path Handling | blog / 2024 / new | blog/2024/new | Preserve Slashes (Optional) |