Privacy Policy

Last updated: May 27, 2026

RegexTester is designed to run JavaScript regular expressions locally in your browser. Your pattern, flags, test text, and replacement text are evaluated on your device.

Regex patterns and test text

The tool does not require uploading your test text or regex pattern to a server. Results are generated in the browser session.

Analytics and ads

This site uses Google AdSense to display advertising. Google and its partners may use cookies or similar technologies to serve ads based on your visits to this and other sites. This page should stay aligned with the live providers and messaging choices used on the site.

Local storage

This version does not store patterns, test text, replacement text, or settings in local storage.

Contact

For privacy questions, contact chenmuxing168@gmail.com.