Regex tester
Validate regular expressions for pattern matching in text.
This tool processes all data locally on your device.
Input
Common patterns
Output
0 characters
No matches found for the current regex pattern.
No explanation available for the current regex pattern.
No valid AST structure available.
Readme
Tool description
A comprehensive online regex evaluator and JavaScript regex validator that allows you to test regular expression patterns against sample text with real-time highlighting and detailed explanations. This regex online editor provides visual feedback, AST (Abstract Syntax Tree) generation, and intelligent pattern explanations to help you understand what your regex does. Perfect for both beginners and experts working with regular expressions.
Features
- Real-time Testing: Test regex patterns against text with instant visual feedback in this online regex evaluator
- Match Highlighting: Visual highlighting of all matched text portions with distinct colors
- Pattern Explanation: Get detailed plain-language explanations answering "what does this regex do?"
Tool info
Created
Last updated
Similar Tools
Count and analyze HTML tags and elements. Get statistics on tag usage, frequency, and distribution.
Identify hash types from hash strings. Supports MD5, SHA-1, SHA-256, SHA-512, bcrypt, Argon2, and many more hash algorithms.
Convert HTML code to high-quality PNG or JPEG images. Render HTML with CSS styles and generate screenshots from web content. Perfect for creating visual previews, social media images, and documentation graphics.
Share
Embed
Embed this tool anywhere for free. Need help? Check out our guide.
325 characters
Disclaimer
The tools provided on this website are designed to assist users in solving various problems. While we strive to ensure that the tools are accurate and effective, we do not guarantee or warrant that the output of any tool will be 100% accurate or error-free. The results generated by these tools are provided as-is and should be used with caution. We recommend that users verify any important information or results with additional resources or professional advice, as we cannot be held responsible for any consequences arising from the use of these tools. By using this website, you agree to assume all risks associated with the accuracy and use of the results provided.