Invalid Referrer-Policy value
Your Referrer-Policy header is set to a value browsers do not recognise, so they ignore it and fall back to their default.
Why it matters
Your Referrer-Policy header is set to a value browsers do not recognise, so they ignore it and fall back to their default. The header looks configured but is doing nothing — the failure mode that survives review, because a header being present is usually where checking stops.
How ShipReady detects it
Shared tables and rules for the two halves below. Split because this check was a hybrid: nine rules read the headers of a response we already have, which genuinely differ between routes, while missing-https-redirect probes the http:// equivalent of the origin — one fact, and running it per page would issue the same request ten times.
Detection is deterministic. ShipReady reports this only when it observes the condition directly, and prefers to miss a real problem over inventing one. Rule version 1.3.0.
How to fix it
This is the prompt ShipReady puts in your report — written to be pasted straight into Cursor, Claude Code, or whichever assistant built the app.
The Referrer-Policy header value ('{observed}') is not a recognized directive, so browsers ignore it and fall back to their default behavior. Use one of the standard values, e.g. strict-origin-when-cross-origin.Frequently asked questions
- What does "Invalid Referrer-Policy value" mean?
- Your Referrer-Policy header is set to a value browsers do not recognise, so they ignore it and fall back to their default.
- How serious is it?
- ShipReady rates this low. Worth fixing. Small individually, and they accumulate.
- How do I fix it?
- Paste the fix prompt on this page into Cursor, Claude Code or your AI editor. It is the same prompt ShipReady puts in your report.
- Can I check my own site?
- Yes — ShipReady scans up to ten pages of any public site for free and reports this alongside every other check.
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