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Referrer policy checker

Paste a Referrer-Policy header and a meta referrer tag and see which one wins, with the trade-off of each policy value spelled out.
Referrer-Policy header valueMeta referrer tag or page head

Precedence here follows the standards rather than the common folklore: the browser processes the meta element before the Referrer-Policy header, so a valid meta tag wins, an invalid one is skipped, and inside a channel the last understood value applies. That last rule is why comma lists like "unsafe-url, no-referrer" exist, older browsers take the first value they know and newer ones take the last. What this checker does not do is fetch anything or judge whether your choice suits your site; the trade-off notes under each value are the whole of that advice.
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More web & auth tools

- HTTP header parser (/web/headers)
- CSP evaluator & builder (/web/csp)
All web & auth tools (/web)

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Canonical HTML: https://nutter.tools/web/referrer-policy-checker
Markdown version: https://nutter.tools/web/referrer-policy-checker.md
Plain-text version: https://nutter.tools/web/referrer-policy-checker.txt
Agent index: https://nutter.tools/llms.txt