CSP builder and validator
Build Content-Security-Policy online
Compose a CSP header from common directives and immediately review risky values such as wildcards and unsafe script options.
Use the result as a starting point and test it in report-only mode before enforcing it on production pages.
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The tool runs directly in the browser and is ready for quick checks without installing software.
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Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
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Use fullscreen mode when you need more space for long text, structured data or large result blocks.
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Copy buttons are available on generated output so results can be reused in code, documents or support chats.
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Most operations are deterministic: the same input and options produce the same output.
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For sensitive content, prefer local browser tools and review the result before sharing it further.
