Network & Security · Local-first

CSP Header Builder / Analyzer Online

Build or audit a Content-Security-Policy header.

Free · No sign-up · Browser-based processing

What CSP Header Builder / Analyzer does

Build or audit a Content-Security-Policy header. The utility is designed for quick, focused work without requiring an account or installing another application.

Common uses

Troubleshoot network and security configurations
Check values before production changes
Generate repeatable outputs for documentation

How to use CSP Header Builder / Analyzer

Enter or paste the value you want to process in CSP Header Builder / Analyzer.
Run the tool and review the generated result for the expected format.
Copy or download the result and verify it in the system where it will be used.

Privacy: Runs locally in your browser. Input is not uploaded to the DevNet Kit server.

CSP Header Builder / Analyzer example

Try the tool with this representative input:

default-src 'self'; script-src 'self' https://cdn.example.com; object-src 'none'; base-uri 'self'

CSP Header Builder / Analyzer FAQ

Does CSP Header Builder / Analyzer require an account?

No. The tool is available without registration.

Is CSP Header Builder / Analyzer local or remote?

Processing runs in your browser and the input is not uploaded to the DevNet Kit server.

Can I use it on mobile?

Yes. The interface is responsive, although large inputs are usually easier to inspect on a desktop screen.