Reporting a vulnerability
Report security problems privately to the security contact below. Include the page, the steps to reproduce and what you observed; do not include other people’s data.
Please give us a reasonable time to fix the problem before disclosing it.
How the site limits risk
Every page is served with a strict Content Security Policy: scripts only from this site, no inline scripts. Engines run in Web Workers and each engine file is verified against its SHA-256 before it runs. This release uploads none of your input.
Contact
Seadfeng · security@regexparser.com
Last changed 2026-09-27.