Regex Generator
Build regular expressions from common presets or custom patterns
Build regular expressions from common presets or custom patterns. Key features include Common pattern presets and Custom regex input. Use it for inspecting and transforming structured data. All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Encrypted with HTTPSProcessed in your browser
All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Actions:
How to Use
- Select a pattern type (email, phone, URL, etc.) or enter a custom regex
- Choose the regex flags (g, i, m, s, u)
- Test the pattern against sample text
- Copy the regex, JS, or literal form
Features
- Common pattern presets
- Custom regex input
- Test against sample text
- Live match highlighting
- Copy regex, JS, or literal forms
Frequently Asked Questions
What types of patterns can it generate?
Email addresses, phone numbers, URLs, dates, IP addresses, credit card numbers, and custom patterns.
How accurate are the generated patterns?
Generated patterns match common formats but may need refinement for edge cases and specific requirements.
Can I test the generated regex?
Yes. The tool includes a test area to verify the regex matches your expected input.
What data tools are available?
We offer CSV viewer, JSON viewer, XML viewer, data validator, CSV to JSON converter, and more for working with structured data.
Are these data tools free?
Yes. All data tools are free with no sign-up, no file size restrictions, and no usage limits.
Is my data private?
Yes. All data processing happens in your browser. Your data is never uploaded to any server.
Privacy & Security
All processing happens entirely in your browser using client-side JavaScript. Your files and text are not uploaded to Tool-web's server.
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