Inside the app
A closer look.
About this app
Made for a clear purpose.
Headerharbor is a local response-header workbench for developers, auditors, and support teams troubleshooting browser security policy.
Turn local Raw HTTP headers evidence into a prioritized, editable review with explicit assumptions, ownership, and exportable decisions.
KEY FEATURES - Native Raw HTTP headers import and normalization - Interactive policy harbor - Editable responses with owners and evidence - Deterministic header findings scoring - Current-versus-proposed state comparison - Decision log with accountable disposition - Portable header hardening packet export - Private offline workspace with no account - Native structured-file or CSV import - Local PDF, workspace JSON, and domain-artifact export - 48 original offline technical reference plates - No account, ads, analytics, tracking, IAP, or subscription
Headerharbor reviews recorded headers and request context; browsers, caches, redirects, service workers, proxies, and origin rules may alter behavior. Confirm findings in supported browsers and on the final response path.
