Regex Tester
Test and debug regular expressions instantly. Supports JavaScript regex syntax with real-time matching and highlighting.
Results
Enter a pattern and test stringQuick Examples
What is a Regular Expression (Regex)?
A regular expression (regex or regexp) is a sequence of characters that defines a search pattern. Regex is used for pattern matching, string validation, and text extraction in programming, text processing, and data analysis.
This regex tester allows you to test and debug regular expressions in real-time with syntax highlighting, match visualization, and detailed match information.
Common Use Cases
✅ Form Validation
Validate email addresses, phone numbers, URLs, and other input formats.
🔍 Text Search
Find and extract patterns from large text documents or log files.
🔄 Data Extraction
Extract specific data like dates, codes, or IDs from unstructured text.
🧹 Data Cleaning
Replace or remove unwanted patterns from text data.
100% client-side processing. Your data never leaves your browser.