AI Regex Builder
Describe what you want to match in plain English — get a regex pattern, test it, and copy it. Powered by on-device AI.
AI model (~30 MB, cached) uses semantic understanding to match your description. More accurate than keyword search.
Matching Patterns
Ready to automate?
Use SimpleDataFoundry's transform steps to apply regex patterns across millions of rows automatically in your data pipelines.
Frequently Asked Questions
How does the AI regex generation work?
The tool uses a sentence embedding model (all-MiniLM-L6-v2, ~30 MB) to understand the meaning of your description and match it against a curated library of 30+ regex patterns using semantic similarity. This means you can describe what you need in natural language and get accurate results even if you don't use exact terminology.
Is my data processed on a server?
No. The AI model runs entirely in your browser. Your descriptions and test data never leave your device.
What if the AI doesn't find a matching pattern?
The tool always returns the closest matches from its pattern library. You can also use Basic Mode, which searches by keywords and works without downloading a model. If you need a custom regex, use the test area to iterate on the suggestions.
Can I test my regex against sample text?
Yes. The built-in test area lets you paste sample text and see all matches highlighted in real time. You can modify the regex and see results update instantly.
How can SimpleDataFoundry help with regex?
SimpleDataFoundry supports regex-based transformation rules in your data pipelines. Apply find-and-replace, extraction, validation, and filtering patterns to millions of rows automatically — no manual data cleaning needed.
What regex flavors are supported?
The patterns use JavaScript regex syntax, which is compatible with most programming languages and tools. Flags like case-insensitive (i), global (g), and multiline (m) are included where appropriate.