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Testador de RegEx Write, Test & Debug Regular Expressions Like a Pro

Atualizado em 23 de fev de 2026

Pare de adivinhar se o seu regex funciona. O nosso Testador de RegEx gratuito fornece realce de correspondência em tempo real, detalhes de grupos de captura e uma biblioteca de padrões comuns — tudo no seu navegador.

RegEx Tester: Write, Test & Debug Regular Expressions Like a Pro 1

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You know that feeling when you stare at a regex pattern like ^(?=.*[A-Z])(?=.*\d)[A-Za-z\d@$!%*?&]{8,}$ and your brain just… leaves the chat? Yeah, same. Regular expressions are one of those things every developer needs to know but nobody enjoys debugging in production.

That’s why we built the Testador de RegEx — a free, browser-based tool that lets you write, test, and debug regex patterns in real time. No installs, no sign-ups, no existential crises. 🎯

Why You Need a RegEx Tester (Besides Sanity)

Let’s be real: writing regex without a tester is like cooking without tasting. Sure, you can do it, but the results are unpredictable and someone’s probably going to cry.

Here’s what makes a good regex tester essential:

Instant feedback — See matches highlighted as you type, not after you deploy and break everything
Capture group visibility — Actually understand what your groups are grabbing
Flag toggling — Switch between global, case-insensitive, multiline without rewriting your pattern
Error messages that help — Know porquê your pattern is wrong, not just that it is

What Can You Do With It? 🔥

O Testador de RegEx comes loaded with features that make regex less painful:

Live Match Highlighting

Type your pattern, paste your test string, and watch matches light up in real time. No “Run” button, no waiting — it just works. This alone saves you from the classic “did it match or didn’t it?” guessing game.

Common Patterns Library

Can’t remember the pattern for email validation? (Nobody can. It’s fine.) Just pick from the built-in library of common patterns: emails, URLs, phone numbers, IP addresses, and more. Use them as-is or as a starting point for your own.

Full Flag Support

Toggle regex flags with a click:

g (global) — Find all matches, not just the first
i (case-insensitive) — Because sometimes you don’t care about case
m (multiline) — Make ^ e $ work per line
s (dotall) — Let . match newlines too
u (unicode) — For when you’re working with emoji and international text 🌍

Capture Group Details

See exactly what each numbered and named capture group matched. This is a lifesaver when you’re building complex extraction patterns and need to know which group grabbed what.

Casos de Uso no Mundo Real

Not sure when you’d use regex? Here are some everyday scenarios:

Form validation — Emails, phone numbers, passwords, postal codes
Log parsing — Extract timestamps, error codes, and IPs from server logs
Data cleaning — Strip HTML tags, normalize whitespace, fix formatting
Search & replace — Find patterns in codebases (way more powerful than Ctrl+F)
Web scraping — Extract specific data from text content

Ferramentas Relacionadas Que Você Pode Gostar

If you’re working with regex, chances are you’re doing other text-wrangling too. Check these out:

Extrator de Email — Pull email addresses from any text (regex under the hood!)
Extrator de Número de Telefone — Same idea, but for phone numbers
Comparação de texto — Diff two strings to see what changed
Conversor de Caso — Convert text between camelCase, snake_case, and more
Removedor de HTML — Remove HTML tags from text in one click

Stop Guessing, Start Matching

Regex doesn’t have to be scary. With the right tool, it’s actually kind of… fun? (Okay, maybe “satisfying” is a better word.) Head over to the Testador de RegEx and take your patterns for a spin. Your future self — the one who doesn’t have to debug regex in production at 2 AM — will thank you. 💡