Why Tools Ku
- 100% free, no signup
- Live match highlights
- Capture groups
- For logs and ETL
Avoid pasting sensitive logs into random regex sites—test in your browser.
JavaScript RegExp dialect applies.
Steps
- Enter pattern and flags
- Paste sample text
- Review matches
- Tune pattern
FAQ
- Uploaded?
- No.
- Engine?
- Typically JavaScript.
- Hang on big input?
- Simplify catastrophic patterns.
- Replace preview?
- If the UI includes replace.
- Multiline?
- Use m flag or [\s\S].
- Signup?
- No.