
Headerharbor: Web Headers
Debug CSP, CORS and HSTS
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$2.99
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About
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.
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What's New in Headerharbor
1.0
July 29, 2026



