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Controlled server processing

Free Online Security Headers Checker

Inspect security headers returned by one public HTTPS request from this server. Header presence alone does not establish security.

Inputs are sent to this server. Uploads are processed temporarily and not retained. Network diagnostics may query public resolvers or the destination website.

Result



How to use Security Headers Checker
Inspect security headers returned by one public HTTPS request from this server. Header presence alone does not establish security.
  1. Set Target.
  2. Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Inspect security headers returned by one public HTTPS request from this server. Header presence alone does not establish security. The example below demonstrates Target.
Example input:
{
  "target": "https://example.com"
}
Result: Actual processed output or live service answers; values depend on the input and request time.
Features & result limitations
Inspect security headers returned by one public HTTPS request from this server. Header presence alone does not establish security.
Frequently asked questions
What inputs does Security Headers Checker accept?
Target
How should I interpret the Security Headers Checker result?
Inspect security headers returned by one public HTTPS request from this server. Header presence alone does not establish security.
Where does Security Headers Checker process my data?
Inputs are processed on this server. Uploads use temporary files removed at request end. Public diagnostics contact the named resolvers or website. Private text is not stored in usage counters.