Regex TesterLocal Regex Debugger

Test and debug regular expressions instantly in your browser. 100% local, privacy-first.

Regex Tester

Test and debug regular expressions instantly in your browser. 100% local, privacy-first.

Regular Expression

Flags

Test String

Common Patterns

Email Address

Match email addresses

[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}

URL

Match HTTP/HTTPS URLs

https?:\/\/[\w\-._~:/?#[\]@!$&'()*+,;=%]+

Phone Number

Match phone numbers

\+?[\d\s\-().]{10,}

IPv4 Address

Match IPv4 addresses

\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b

Date (YYYY-MM-DD)

Match dates in ISO format

\d{4}-\d{2}-\d{2}

Time (HH:MM:SS)

Match time in 24-hour format

(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d

Hex Color

Match hex color codes

#(?:[0-9a-fA-F]{3}){1,2}\b

Username

Match usernames (3-16 chars, starts with letter)

^[a-zA-Z][a-zA-Z0-9_]{2,15}$

Strong Password

Match strong passwords (8+ chars, upper, lower, number, special)

^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$

Credit Card

Match credit card numbers

\b(?:\d{4}[- ]?){3}\d{4}\b

Česta Pitanja

Sve što trebate znati.

Is this secure?

Yes. All regex testing happens locally in your browser. No data is sent to any server.

What flags are supported?

We support global (g), case-insensitive (i), multiline (m), dotAll (s), and unicode (u) flags.

Privatno i Sigurno

Obrada se odvija 100% u vašem pregledniku. Datoteke se nikada ne učitavaju na poslužitelj.

Munjevito Brzo

Pokreće WebAssembly za performanse slične nativnima.

Bez Instalacije

Radi na bilo kojem uređaju izravno u Chrome/Edge/Firefox pregledniku.

Regex TesterLocal Regex Debugger

Test and debug regular expressions instantly in your browser. 100% local, privacy-first.

Regex Tester

Test and debug regular expressions instantly in your browser. 100% local, privacy-first.

Regular Expression

Flags

Test String

Common Patterns

Email Address

Match email addresses

[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}

URL

Match HTTP/HTTPS URLs

https?:\/\/[\w\-._~:/?#[\]@!$&'()*+,;=%]+

Phone Number

Match phone numbers

\+?[\d\s\-().]{10,}

IPv4 Address

Match IPv4 addresses

\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b

Date (YYYY-MM-DD)

Match dates in ISO format

\d{4}-\d{2}-\d{2}

Time (HH:MM:SS)

Match time in 24-hour format

(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d

Hex Color

Match hex color codes

#(?:[0-9a-fA-F]{3}){1,2}\b

Username

Match usernames (3-16 chars, starts with letter)

^[a-zA-Z][a-zA-Z0-9_]{2,15}$

Strong Password

Match strong passwords (8+ chars, upper, lower, number, special)

^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$

Credit Card

Match credit card numbers

\b(?:\d{4}[- ]?){3}\d{4}\b

Česta Pitanja

Sve što trebate znati.

Is this secure?

Yes. All regex testing happens locally in your browser. No data is sent to any server.

What flags are supported?

We support global (g), case-insensitive (i), multiline (m), dotAll (s), and unicode (u) flags.

Privatno i Sigurno

Obrada se odvija 100% u vašem pregledniku. Datoteke se nikada ne učitavaju na poslužitelj.

Munjevito Brzo

Pokreće WebAssembly za performanse slične nativnima.

Bez Instalacije

Radi na bilo kojem uređaju izravno u Chrome/Edge/Firefox pregledniku.