Secure CSP Header Generator – Online csp generator Tool
Build secure Content Security Policy (CSP) headers.
CSP Directives
Generated Header
default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; connect-src 'self'; font-src 'self'; frame-src 'none'
How to use
Content-Security-Policy: default-src 'self'; script-src...
Add this to your HTTP response headers or as a <meta> tag in your <head>.
Strengthen Your Web Security with CSP
Content Security Policy (CSP) is one of the most powerful tools in a developer's arsenal for preventing Cross-Site Scripting (XSS) and clickjacking attacks. By explicitly defining which domains are allowed to load scripts, styles, and images, you can render many common web vulnerabilities completely ineffective.
Directive Best Practices
- Start Strict: Use
default-src 'self'to block everything by default, then add specific exceptions. - Avoid 'unsafe-inline': If possible, avoid inline scripts and styles, as these are common entry points for XSS.
- Limit Sources: Only allow trusted CDNs and domains that you absolutely need.
Interactive Helper
Our CSP Header Generator simplifies the complex syntax of security policies. As you modify the directives in the editor, the header string is updated in real-time. This allows you to experiment with different configurations and see the resulting policy immediately, all within the safety of your own browser.
Frequently Asked Questions
Related Free Tools
- CSRF Token Generator — Generate secure anti-CSRF tokens in various formats.
- URL Validator — Check if a URL is correctly formatted and valid.