Regex Tester & Expression Evaluator
Test regular expressions in real-time with pattern flags (g, i, m) and match highlights.
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About Regex Tester & Expression Evaluator
Evaluate JavaScript and PCRE-compatible regular expressions against sample text with live match lists and flag adjustments.
Key Features & Performance
Supported File Formats
Privacy & Data Security
All file conversions, OCR extractions, and calculations execute directly in your browser memory with zero server uploads. Your data never leaves your computer.
Frequently Asked Questions
What regex flavor is used?
It uses standard ECMAScript JavaScript Regular Expressions.
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