Use our free Regex Tester to test regular expressions. All calculations and processing are performed directly in your browser for maximum privacy and speed. No data is sent to any server, and no information is stored or logged. No account or signup required — just open the tool and get started instantly.
Yes, Regex Tester is completely free to use. There are no hidden charges, no premium tiers, and no usage limits. Use it as many times as you need.
Yes. All processing happens directly in your browser using JavaScript. No data is uploaded to any server, no files leave your device, and nothing is stored or logged.
Yes, all output generated by our developer tools is yours to use freely in any project, commercial or personal. There are no licensing restrictions on the generated code or formatted output.
No, absolutely not. No account, no email, no signup of any kind is required. Just open the tool and start using it immediately. We believe tools should be accessible to everyone without barriers.
Yes, Regex Tester is fully responsive and works on all devices including smartphones, tablets, laptops, and desktops. It works in any modern browser including Chrome, Firefox, Safari, and Edge.