Defensive web review
Check the headers your browser receives.
Paste an HTTP response header block to review several common browser security controls. The checker explains what it sees and gives learning-oriented suggestions.
Response headers
Paste headers as “Name: value”, one per line. No network request is made.
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controls presentInformational checklist; not a full security audit.
This tool checks only the text you provide. It does not fetch a website, test a live server, or prove that a site is secure. Review suggestions against your app’s needs before changing production settings.