IntegSec CSP Tester

IntegSec CSP Tester - View and Test Content Security Policies Transform your browser into a powerful Content Security Policy (CSP) analysis and testing tool. IntegSec CSP Tester is the ultimate extension for web developers, security professionals, and site administrators who need to understand, analyze, and test CSP headers on any website. 🔒 WHAT IS CONTENT SECURITY POLICY? Content Security Policy (CSP) is a critical web security standard that helps prevent cross-site scripting (XSS) attacks, data injection attacks, and other code injection vulnerabilities. CSP works by allowing website owners to specify which sources the browser should consider valid for loading resources like scripts, stylesheets, images, fonts, and more. Without proper CSP configuration, websites are vulnerable to Cross-Site Scripting (XSS) attacks, data injection attacks, clickjacking attempts, unauthorized resource loading, and mixed content vulnerabilities. 🎯 WHY USE INTEGSEC CSP TESTER? Whether you're a developer implementing CSP for the first time, a security professional auditing websites, or a site administrator troubleshooting policy violations, IntegSec CSP Tester provides the tools you need to work effectively with Content Security Policies. KEY FEATURES: 👁️ VIEW MODE - AUTOMATIC CSP ANALYSIS The extension automatically detects and analyzes CSP headers on any website you visit. No configuration needed - just browse and learn! • Automatic Detection: Instantly identifies CSP headers from HTTP responses and meta tags • Plain English Explanations: Every directive is explained in clear, understandable language • Security Scoring: Get an instant security rating (0-5) for any CSP configuration • Criticality Assessment: Understand if a CSP is Excellent, Good, Moderate, Weak, or Critical • Directive Breakdown: See exactly what each directive allows and why it matters • Raw Header Display: View the exact CSP header as sent by the server Perfect for security audits, learning how CSP works, understanding competitor security configurations, troubleshooting CSP-related issues, and compliance reviews. 🧪 TEST MODE - INJECT AND TEST YOUR CSP Test your CSP configurations before deploying them to production. This powerful feature lets you inject custom CSP headers into any website to see how they behave. • Custom CSP Injection: Paste any CSP policy and inject it into web requests • Real-Time Testing: See CSP violations immediately in the browser console • Toggle On/Off: Enable or disable CSP injection with a single click • Clipboard Integration: Easily paste CSPs from our builder tool • Cross-Site Testing: Test your CSP on any website, not just your own • Violation Reporting: View detailed violation reports in DevTools console Perfect for testing CSP configurations before deployment, debugging CSP violations, validating policy changes, training and education, and proof-of-concept demonstrations. 📊 SECURITY SCORING SYSTEM Our advanced scoring algorithm evaluates each CSP directive and provides an overall security rating: • 0-1.5: Critical - Immediate security improvements needed • 1.5-2.5: Weak - Significant improvements recommended • 2.5-3.5: Moderate - Good foundation, room for enhancement • 3.5-4.5: Good - Secure configuration following best practices • 4.5-5.0: Excellent - Highly secure, industry-leading configuration The scoring system considers use of unsafe keywords ('unsafe-inline', 'unsafe-eval'), restrictiveness of source lists, best practice compliance, and directive-specific security implications. 🔍 COMPREHENSIVE CSP DIRECTIVE SUPPORT IntegSec CSP Tester understands and explains all major CSP directives including default-src, script-src, style-src, img-src, font-src, connect-src, frame-src, object-src, media-src, frame-ancestors, base-uri, form-action, upgrade-insecure-requests, and block-all-mixed-content. Each directive is explained with what it does, why it matters for security, common use cases, and best practice recommendations. 🛠️ EASY INTEGRATION WITH CSP BUILDER Seamlessly integrated with IntegSec CSP Builder (cspbuilder.integsec.com). Build CSPs using our free online tool, copy and paste instantly, test immediately, and iterate quickly. WORKFLOW: 1. Visit cspbuilder.integsec.com 2. Configure your CSP using our intuitive builder 3. Copy the generated CSP 4. Paste into IntegSec CSP Tester 5. Test on your website 6. Review violations and adjust 7. Deploy with confidence 💡 USE CASES WEB DEVELOPERS: Implement CSP for the first time, debug CSP violations during development, test policy changes before production deployment, understand how CSP affects your application, and learn CSP best practices. SECURITY PROFESSIONALS: Audit websites for CSP implementation, assess CSP security posture, identify misconfigurations and vulnerabilities, document security configurations, and provide security recommendations. SITE ADMINISTRATORS: Troubleshoot CSP-related issues, understand existing CSP configurations, test policy changes safely, validate security improvements, and monitor CSP effectiveness. SECURITY AUDITORS: Rapidly assess CSP implementations, generate security reports, compare configurations across sites, identify security gaps, and provide actionable recommendations. EDUCATORS & STUDENTS: Learn how CSP works, understand security headers, practice with real-world examples, visualize CSP concepts, and build security knowledge. 🔐 SECURITY BENEFITS Implementing proper CSP provides significant security improvements: XSS PROTECTION: CSP is one of the most effective defenses against Cross-Site Scripting attacks. By restricting script sources, CSP prevents attackers from injecting malicious JavaScript into your pages. DATA INJECTION PREVENTION: CSP helps prevent various forms of data injection attacks by controlling which resources can be loaded and executed. CLICKJACKING PROTECTION: The frame-ancestors directive prevents your site from being embedded in malicious frames, protecting against…