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Regex Playground

Test regular expressions against sample text in real time. Supports flags, shows match groups, and highlights results inline. All processing stays in your browser.

Pattern

/ /

Test text

Hello World! Contact support@revendum.com or visit https://tools.revendum.com
Phone: +1 (555) 123-4567 — Server errors: ERROR_503, ERROR_404
Timestamps: 2026-06-26 14:30:00, 2026-06-25 09:15:00

Matches

Click Test to see matches highlighted here.

🤖 AI Prompt

Ask an AI to build or explain a regex pattern:

Write a regex pattern that: 1) Matches IPv4 addresses (e.g. 192.168.1.1) 2) Also matches IPv6 addresses 3) Excludes private/reserved ranges 4) Captures each octet/group separately. Explain each component of the pattern and note any edge cases it might miss.