Regex Tester & Matcher
Write patterns, test matches, and preview regex search-replace operations instantly in your browser.
Processed locally in your browser — nothing is uploaded.
How to Use
- Enter your regular expression pattern and choose flags.
- Paste your test string in the text container.
- Review matches, capture groups, and replacement text.
FAQ
What flags are supported?
Supports global (g) matching, case-insensitive (i) matching, and multi-line (m) modes.
Is my matching input private?
Yes, Toolkit evaluates all regular expressions locally inside your browser.