How to use CSP Validator
- Paste the text you need to validate into the input box.
- Tune the Paste a Content-Security-Policy header or policy control before you validate.
- The result is computed live in your browser as you edit the input.
- When it looks right, Copy to save it.
About this tool
Everything CSP Validator does happens on your own device. CSP Validator is a free HTTP & Security Header Tools utility that runs in your browser, doing its work on the input you provide without a backend.
It is designed to do one job well and stay out of your way. It behaves the same on desktop and mobile, with nothing stored remotely.
Frequently asked questions
How do I use CSP Validator?
CSP Validator lets you validate your input right in the browser using the Paste a Content-Security-Policy header or policy control, with the result shown instantly and nothing uploaded.
Do I need an account for CSP Validator?
No — CSP Validator needs no account, sign-up or installation.
Where is my data processed by CSP Validator?
Entirely in your browser — CSP Validator keeps your data on your own machine and sends nothing anywhere.
Does CSP Validator work offline?
Once the page has loaded, CSP Validator keeps working with no network connection.