Why is unsafe-inline dangerous in CSP?

It allows any inline script to run, defeating XSS protection. Use nonces or hashes instead.

How do I fix SharePoint CSP refused to load errors?

Add your external script and style origins to the SharePoint Admin Center CSP allowlist under Policies → Other features → Content Security Policy.

Will CSPFixer break my site?

Always test in a staging environment first. The generated CSP is a starting point — you may need to add additional origins specific to your app.

Your CSP is either missing, broken, or too loose. CSPFixer fetches your page, finds every resource, and generates a working policy.

Live URL fetch — scans your actual scripts, styles, fonts, and images. Generates a strict CSP for Nginx, Apache, Vercel, Cloudflare, and Express.

URL

CSPFixer fetches your page and reads all resource URLs — nothing is stored

CSP header value

You might also need

    ✅CSP Validator
Validate your CSP string against W3C spec🔒HeadersFixer
Scan all security headers and get the exact fix⚠️Mixed Content Fixer
Find HTTP resources on your HTTPS page
  

Done with this tool?
20 HTTP checks before you ship — security, CORS, cache, redirects, staging.
Pre-Launch Checklist →