Regex Tester
Test and debug regular expressions with real-time matching. Supports pattern matching, substitution, and includes a library of common regex patterns.
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Test String
Match Result
Matches will be highlighted here...
Match Details
0 matches
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Common Patterns
How It Works
- Enter your regular expression pattern between the forward slashes
- Select regex flags (Global, Ignore case, Multiline, Dot all) as needed
- Type or paste your test string in the left panel
- See matches highlighted in real-time with detailed match information
- Click any common pattern below to quickly test popular regex patterns
Frequently Asked Questions
What are regular expressions?
Regular expressions (regex) are patterns used to match character combinations in strings. They're powerful tools for text processing, validation, and pattern matching in programming and data processing.
Is this tool free to use?
Yes, ApexSofteck Tools's Regex Tester is completely free. Test unlimited regular expressions without any registration required.
What do the regex flags mean?
g (Global) finds all matches; i (Ignore case) makes matching case-insensitive; m (Multiline) changes ^ and $ to match line boundaries; s (Dot all) makes dot match newlines too.
Is my test data secure?
Yes, all regex testing happens entirely in your browser. Your patterns and test strings are never sent to any server.
Can I use common patterns?
Yes! We provide a library of 12 common patterns including email, URL, phone numbers, IP addresses, dates, credit cards, hex colors, and more. Click any pattern to instantly load it.