Regex Tester
Test and debug regular expressions with real-time match highlighting and group capture. Free online regex tester.
No matches found in test string.
Adjust your regular expression or test string inputs.
Examples
(\w+)-(\d+)FormatForge-2026 is awesome-123!Frequently Asked Questions
What is a regular expression (regex)?
A regular expression is a sequence of characters that forms a search pattern. It's used for pattern matching within strings, search-and-replace, and data validation.
Which regex syntax is supported by this tester?
This tester utilizes native JavaScript RegExp engine rules, supporting standard flags like g (global search), i (case-insensitive), and m (multiline).
Is my text data safe when testing regex?
Yes. All pattern matching and text parsing execute locally inside your web browser. None of your test strings or regex patterns are sent to our servers.
Related Tools
JS Formatter
Format and beautify JavaScript code with proper indentation. Free online JS formatter with syntax highlighting.
TS Formatter
Format and beautify TypeScript code with proper indentation. Free online TypeScript formatter.
HTML Formatter
Format and beautify HTML markup with proper indentation. Free online HTML formatter with syntax highlighting.
CSS Formatter
Format and beautify CSS stylesheets with proper indentation. Free online CSS formatter.
SQL Formatter
Format and beautify SQL queries with proper indentation and keyword capitalization. Free online SQL formatter.
UUID Generator
Generate bulk random UUIDs (v4 and v1) instantly. Free online UUID / GUID generator tool.