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RegEx Tester

Common RegEx Templates

Regular Expression

Valid Expression Standard Compiled

Test Subject Text

Highlighted Matches Visualizer

Please contact support@example.com or admin.office@company.co.uk for inquiries. Invalid email addresses like hello@world, space inside@domain.com, or user@.com should not match.

Detailed Matches Breakdown

No Match Matches Found

Matches will dynamically appear as you adjust your pattern, flags, or test data.

Interactive Cheatsheet

Regex Flags Tip

g (Global): Find all matches rather than stopping at the first match.
i (Case Insensitive): Ignore capitalization when checking patterns.
m (Multiline): Make ^ and $ match start/end of every line.
s (dotAll): Allows the dot (.) wildcard to match newline characters as well.