Is RegEx Tester & Explainer free for developers?▾
Yes, completely free. No API key, no rate limits, no signup required.
Is the data I paste into RegEx Tester & Explainer sent to any server?▾
No. RegEx Tester & Explainer processes everything locally in your browser. Your code and data stay private.
Can I use RegEx Tester & Explainer as part of my workflow?▾
Absolutely. RegEx Tester & Explainer is designed to be a quick, frictionless part of your development workflow.
Does RegEx Tester & Explainer work without internet?▾
Once the page is loaded, most features of RegEx Tester & Explainer work offline since processing is browser-based.
Is RegEx Tester & Explainer open source?▾
The tool runs in your browser using open web standards. No proprietary black-box servers are involved.