Security Report Summary
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Site: https://reactrouter.com/
IP Address: 151.101.65.91
Report Time: 27 Oct 2026 23:57:23 UTC
Headers:
  • Content-Security-Policy
  • X-Frame-Options
  • X-Content-Type-Options
  • Referrer-Policy
  • Permissions-Policy
  • Strict-Transport-Security
Advanced:
Ouch, you should work on your security posture immediately:
Missing Headers
Content-Security-PolicyContent Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets.
X-Frame-OptionsX-Frame-Options tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking. Recommended value "X-Frame-Options: SAMEORIGIN".
X-Content-Type-OptionsX-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is "X-Content-Type-Options: nosniff".
Referrer-PolicyReferrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.
Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
Warnings
Strict-Transport-SecurityThe "max-age" directive is too small. The minimum recommended value is 2592000 (30 days).
Raw Headers
HTTP/2200
cache-controlpublic, max-age=300, stale-while-revalidate=604800
content-encodinggzip
content-typetext/html
ratelimitlimit=1000, remaining=999, reset=120
ratelimit-policy1000;w=120
serverFly/366e4bf88 (2026-10-27)
via1.1 fly.io, 1.1 fly.io, 1.1 varnish
fly-request-id01M5ZSVMX26DV9GZ3GMSJQTJZB-cdg
accept-rangesbytes
age3031
dateTue, 27 Oct 2026 23:57:23 GMT
x-served-bycache-dub4398-DUB
x-cacheHIT
x-cache-hits0
x-timerS1793145444.598206,VS0,VE30
varycookie, accept-encoding, Accept-Encoding
strict-transport-securitymax-age=300
alt-svch3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length5488
Upcoming Headers
Cross-Origin-Embedder-PolicyCross-Origin Embedder Policy allows a site to prevent assets being loaded that do not grant permission to load them via CORS or CORP.
Cross-Origin-Opener-PolicyCross-Origin Opener Policy allows a site to opt-in to Cross-Origin Isolation in the browser.
Cross-Origin-Resource-PolicyCross-Origin Resource Policy allows a resource owner to specify who can load the resource.
Additional Information
serverServer value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".
strict-transport-securityHTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS.