Free website security scanner that checks HTTP headers, TLS/SSL, DNS security, CSP violations reporting and web server hardening with actionable fix guidance.


Observatory is described as 'Collect and curate your astronomical images. Search 10+ professional image archives simultaneously. Create master bias, dark and flat frames. Calibrate, register, stack and adjust your FITS, XISF (PixInsight), SBIG and RAW images, all nondestructively' and is an app in the education & reference category. There are 1 alternatives to Observatory for Web-based. The best Observatory alternative is SiteSecurityScore, which is free.
Free website security scanner that checks HTTP headers, TLS/SSL, DNS security, CSP violations reporting and web server hardening with actionable fix guidance.

