Passive Recon — 100% Browser-Based
Works on GitHub Pages with zero backend. Discovers subdomains via certificate transparency, resolves them with DNS-over-HTTPS, and pulls screenshots from URLScan.io — all from your browser.
Sources used:
🔐 crt.sh — SSL certificate transparency logs
🌐 Google DNS-over-HTTPS — live DNS resolution
📸 URLScan.io — existing screenshot database
📚 Wayback Machine CDX — historical URL archive
No backend needed
No API keys
Works on GitHub Pages
Live DNS resolution
Real screenshots
CSV / JSON / TXT export