marker lab

Generate markdown / HTML callback markers for authorized SSRF, renderer, DNS, SMTP and Blind XSS testing.

<- feed flow marker lab
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The marker lab is a Pro feature

Open a Pro listener to generate ready-to-paste markers for SSRF, DNS, Blind XSS, SMTP, template injection, Log4Shell and renderer testing — all pre-targeted to your subdomain.

✓ 14+ marker categories, hundreds of payloads
✓ Markdown, HTML, CSS, SVG, PDF & encoded variants
✓ Live filtering, copy-per-block & .txt export
✓ Pre-wired to your listener — paste & catch the callback
Upgrade to Pro → Generate a listener
Already have a key? Open the lab from your Pro dashboard.