UI Code Generator
Describe a page, stream its HTML, edit the code and preview phone, tablet or desktop layouts.
Development
Regex Test Tool
Test regular expressions, highlight matches and generate code
Enable JavaScript to use the interactive controls. Your guide and examples are available below.
Features
- Expression flags and highlighted matches
- Email, URL, number, date and IP presets
- Code generation and sharing
About Regex Test Tool
Test regular expressions, highlight matches and generate code
How to use it
- Paste a small source or data sample into the editor.
- Select the operation, language and formatting options offered by this tool.
- Review validation messages and inspect the output before copying or exporting it.
Try Regex Test Tool
Expression: [A-Z]{2}-\d{3}
Text: Order AB-123 is ready.Processing and limitations
Browser
Testing uses JavaScript regex semantics; generated-language differences require review.
Questions and answers
What can I do with Regex Test Tool?
Flags, presets, match highlights/count, shareable expression and five-language code generation.
Where is my input processed?
The main operations run in your browser. Device models may require a first-use download; browser storage and resource limits apply.
What should I check before using the result?
Testing uses JavaScript regex semantics; generated-language differences require review.
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