Regular Expression Generator
Generate battle-tested regular expressions with explanation, flags, test cases, and code snippets in JavaScript, TypeScript, Python, and Go. · Updated
Options
Preset Pattern:
text
json
Draft saved locally.
Options
| Option | Description |
|---|---|
| Preset Pattern | Select a common regex pattern preset to inspect code snippets and validation test cases. |
FAQ
What code languages are supported for code snippet generation?
Every pattern provides ready-to-paste snippets for JavaScript (ES6), TypeScript, Python (`re.compile`), and Go (`regexp.MustCompile`).
Can I test these patterns with custom input?
Yes. Use our companion tool, Regular Expression Tester (`/regex-tester`), to test and debug live matches interactively.
Related tools
Regex Tester
Test, debug, and validate Regular Expressions in real-time with capturing group extraction and flag controls.
JSON Validator
Instantly validate JSON syntax, identify errors with exact line and column locations, and fix formatting bugs.
URL Parser & Params Builder
Deconstruct URLs into protocol, host, port, path, hash, and structured query parameters with full decoding.
JSON Schema Validator
Validate JSON documents against JSON Schema definitions using Ajv. Path-accurate structural error reports.