Makes it easier to read Content-Security-Policy (CSP) and Feature-Policy (FP) headers, and checks that all other related headers have been set for the HTML and linked resources (e.
It can also set a "X-Dev-Key" header on all requests to your server, where the value is typically kept as a secret, and allows your server to enable additional debug information (just as an extra precaution, your server should also check the source IP address, and ideally that you are logged in).
- Offered by craig.francis
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Dev Headers web extension integrated with the OffiDocs Chromium online