Developer Utilities

Live Regex Tester & Debugger

Test, debug, and validate regular expressions in real-time with capture groups breakdown, flag toggles, and multi-language code snippets.

//g
Regex Flags:
2 matches found
95 characters
Extracted Matches & Capture Groups
Match #1index: 8..31 (23 chars)
support@vitalsaudit.com
Match #2index: 35..57 (22 chars)
john.doe@company.co.uk

About this tool

Comprehensive documentation & audit utility guide
Verified Utility

Regular expressions (RegEx) are pattern-matching sequences used for search, data validation, string replacement, and lexical parsing across all programming languages. This tool executes client-side RegExp engines safely in your browser, highlighting matches, breaking down capture groups, simulating substitutions, and generating multi-language integration code.

How it works
1
Write Pattern & Flags

Enter your regular expression string and toggle global (g), case-insensitive (i), and multiline (m) flags.

2
Test Input Text

Paste your target string or pick from verified presets for emails, URLs, dates, and IP addresses.

3
Inspect Matches & Export

Review capture groups, test string substitutions, and copy ready-to-use snippets in JavaScript, Python, PHP, or Go.

What it checks
Real-time syntax validation with detailed error hints
Capture groups extraction ($1, $2 breakdown)
Dynamic string substitution and replacement preview
Pre-built regex library (Emails, URLs, IP addresses, Slugs, Hex codes)
Multi-language code generator for JavaScript, Python, PHP, and Go