DNS Gurus
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22 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000
Content-Security-Policy
Basic
default-src; script-src; style-src; +8 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Vary
Performance
Origin

Caching Headers

3 headers
Cache-Control
Caching
public, max-age=0
Etag
Caching
W/"1de7-19c0093b898"
Last-Modified
Caching
Tue, 27 Jan 2026 17:50:07 GMT

Content Headers

2 headers
Content-Length
Content
7655
Content-Type
Content
text/html; charset=UTF-8

Server Headers

2 headers
Server
Server
Heroku
X-Powered-By
Server
Express

CORS Headers

2 headers
Access-Control-Allow-Credentials
Cors
true
Access-Control-Allow-Origin
Cors
http://localhost:13268

Cookies Headers

0 headers
No cookies headers found

Other Headers

5 headers
Date
Other
Thu, 05 Feb 2026 00:56:06 GMT
Nel
Other
{"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
Report-To
Other
{"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=6zDoAwt0xM%2BgXcx2WShU54%2F5%2FJ1TcgpzhpR6NCLU87g%3D\u0026sid=c46efe9b-d3d2-4a0c-8c76-bfafa16c5add\u0026ts=1770252966"}],"max_age":3600}
Reporting-Endpoints
Other
heroku-nel="https://nel.heroku.com/reports?s=6zDoAwt0xM%2BgXcx2WShU54%2F5%2FJ1TcgpzhpR6NCLU87g%3D&sid=c46efe9b-d3d2-4a0c-8c76-bfafa16c5add&ts=1770252966"
Via
Other
1.1 heroku-router

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology