AI-Powered Regex Tester & Explainer

Test, debug, and understand regular expressions in real-time. Optional AI explanations available via OpenRouter.

Regex Tester

Paste pattern & test text — results update in real time.

Explanation / Tokens

Provide a regex pattern to see tokenized explanation here.

Matches Preview

Matches will be highlighted here.

Matches (JSON)

No matches

Why Choose Our AI Regex Tool?

⚡ AI-Powered Explanations

Understand complex regex instantly with human-style explanations powered by AI.

🔍 Real-Time Results

Preview regex matches and highlights live while typing, without refreshing the page.

🧠 Smart Debugging

Automatically detect common regex errors and suggest quick fixes for developers.

🔒 Privacy First

All testing happens locally in your browser. AI only runs when you choose to enable it.

🚀 Developer Friendly

Clean, minimal interface built for speed and precision with copy & download options.

🌐 Multi-Platform Ready

Works smoothly across all devices and browsers with a consistent user experience.

AI Features

  • Tokenized Regex Explanation
  • Match Highlighting & JSON Output
  • Flags toggles (g, i, m, s, u)
  • Copy & Download results
  • Optional Server-side AI explanation (OpenRouter)

What is Regex Tester & Explainer?

Regular expressions (regex) are patterns used to match text. This tool helps you create, test, and understand regex through highlights, group output, and (optionally) AI-generated explanations.

How to Use This Tool

  1. Enter or paste your regex pattern in the "Pattern" field.
  2. Toggle flags (g, i, m, s, u).
  3. Paste the text to test in the "Test Text" area.
  4. Click Test Regex to see highlighted matches and a JSON summary.
  5. Click Explain with AI to get an AI-powered explanation (requires OpenRouter API key added server-side).

Frequently Asked Questions

1. Is this tool free?

Yes! The basic regex testing and explanation features are completely free to use.

2. How do I enable AI explanations?

Simply add your OpenRouter API key to your wp-config.php file.

3. Does this tool store my regex data?

No — all regex processing happens in your browser. Nothing is saved or tracked.

4. Which programming languages’ regex does this support?

This tool follows JavaScript regex syntax. Some differences may exist with Python or PHP regex.

5. What happens if I don’t have an API key?

The tool still works — it will use a built-in rule-based regex explainer.

6. Can I use this offline?

Yes, as long as your browser has loaded the assets once. AI features need internet access.

7. Can I copy and share results?

Yes — you can copy the JSON or download match results directly with one click.

8. Is OpenRouter safe to use?

Yes, OpenRouter securely processes AI requests and never logs private user text.

9. Will there be more features?

Yes — upcoming updates will include regex visual graphs and syntax highlighting.

10. Who created this tool?

This plugin was built by Farooq with the help of ChatGPT — optimized for WordPress users.