About CSP Builder

Generate a strict, working Content-Security-Policy in your browser. Pick what your site loads, get a copy-paste header. No signup, nothing uploaded.

Privacy

CSP Builder runs entirely in your browser. Your inputs are never sent to a server.

CSP Builder is an informational tool, not legal, financial, medical, or professional advice. Verify anything important with a qualified professional.

One of a family of free, no-signup tools. See more at Copper Bay Labs.