Tool Workspace
Enter content, process with one click
1Introduction
AI regex generator: describe your matching needs in natural language, and the AI produces ready-to-use regex with plain-language explanations and positive/negative match examples. PRO members also get an online regex tester to paste test text, highlight all matches in real time, view the match list and regex structure visualization, and support JavaScript/Python/Java/PHP/grep flavors with global, case-insensitive, and multiline modes. Common templates (phone, email, URL, ID, etc.) are one click away.
2How to Use
Describe Your Needs
Describe in natural language what you want to match, such as 'match an 11-digit phone number starting with 1.'
Select Parameters
Choose a regex flavor (JavaScript / Python / Java / PHP / grep) and matching mode (global / case-insensitive / multiline).
Generate Regex
Click 'Generate Regex' and the AI returns the expression, plain-language explanation, and match examples.
Test Online
PRO members can fill the tester with one click, paste test text to highlight matches in real time, and view the regex structure visualization and match list.
3FAQ
What's the difference between this tool and just asking an AI?
Besides generating regex, this tool has an online tester: paste text to highlight all matches in real time, see the position of each match, and view the regex structure graphically. You can verify immediately after generation without opening another tool for debugging.
What's the difference between the free and PRO versions?
The free version lets you generate regex and explanations daily after logging in (with copy support). PRO unlocks the online tester, common template library, regex structure visualization, and multilingual adaptation, with unlimited usage.
Which regex flavors are supported?
Five flavors are supported: JavaScript, Python, Java, PHP, and grep. The AI generates according to the syntax differences of the selected flavor (e.g., assertion syntax, named groups).
How do matching modes work?
Global (g) matches all occurrences, case-insensitive (i) ignores letter case, and multiline (m) makes ^ and $ match the start and end of each line.
How do I test the generated regex?
PRO members click 'Run Test' in the result area, and the regex is automatically filled into the tester. After pasting test text below, click 'Test' to highlight matches. Clicking a match in the list quickly locates it.
