DocomintGenerador de expresiones regulares
Obtén una expresión regular lista para usar en patrones comunes como email, URL, teléfono y más.
What is a Generador de expresiones regulares?
Rather than writing a regular expression for a common pattern from scratch — and getting an edge case wrong, like an email regex that rejects a valid "+" alias — this gives you a tested expression for the pattern types people search for most, plus a plain-language note on exactly what it matches (and doesn't).
How to use the Generador de expresiones regulares
- Pick the kind of pattern you need
- Press Generate
- A tested regular expression and a plain-language explanation appear instantly, on your device
Example
Picking "Email address" returns ^[\w.+-]+@[\w-]+\.[a-zA-Z]{2,}$ — good for form validation, though like most simple email regexes it won't catch every edge case the full RFC 5322 spec allows.
Frequently asked questions
Will the generated regex catch every possible edge case?
These are solid, widely-used patterns for everyday validation, but no simple regex perfectly matches the full formal spec for something like email addresses (RFC 5322) — for critical validation, pair this with a real verification step (like a confirmation email).
Is my data uploaded anywhere?
No — Generador de expresiones regulares runs entirely in your browser using JavaScript/WebAssembly. Your data is never sent to a server.
Can I tweak the generated pattern's strictness, like requiring a specific phone format?
Not through the generator's options directly — it returns one tested pattern per type. Copy the result into Regex Tester to experiment with modifications against your own sample text.