How does the security scoring system work?

Our scoring system evaluates headers in four categories: Critical Security Headers (50 points), Essential Headers (30 points), Modern Headers (12 points), and Additional Headers (3 points). HTTP/3 support adds up to 5 bonus points. The total possible score is 105 points.

What do the grades mean?

A+ (≥95): Perfect security, A (≥85): Excellent, B+ (≥75): Good, B (≥65): Adequate, C+ (≥55): Basic, C (≥45): Needs improvement, D+ (≥35): Poor, D (≥25): Very poor, F (<25): Critical issues.

What are the most important security headers?

The most critical headers are Content-Security-Policy (25 points) and Strict-Transport-Security (25 points), followed by X-Frame-Options, X-Content-Type-Options, and Referrer-Policy (10 points each).

HTTP Security Headers Analyzer

A comprehensive security tool designed to analyze, evaluate, and enhance your website's security posture through HTTP security headers implementation

Scan Site Header

Note: This tool is designed to analyze HTTP security headers of your website. It does not scan for vulnerabilities or perform real-time security testing.

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About Security Headers

What are Security Headers and HTTP/3?

HTTP Security Headers are special HTTP headers that your website can use to increase its security. They protect against common web vulnerabilities such as Cross-Site Scripting (XSS), clickjacking, and other injection attacks. Additionally, HTTP/3 is the latest version of the HTTP protocol that improves performance and security through modern features like QUIC transport protocol.

Why Security Headers Matter

Protect against common web vulnerabilities and attacks
Enhance website performance and user experience
Comply with security best practices and standards
Demonstrate commitment to security and performance

How Our Analyzer Works

Scans your website's HTTP response headers
Analyzes the presence and configuration of security headers
Evaluates headers against security best practices
Provides detailed recommendations for improvement

Key Features

Comprehensive Analysis

Thorough evaluation of all security headers

Detailed Scoring & Explanations

Clear grading system with explanations

Smart Recommendations

Actionable suggestions for improvement

Implementation Guide

Ready-to-use configuration examples

Headers Analysis

Critical Headers (50 points)

Content-Security-Policy 25 points

Prevents XSS attacks and other code injection
Strict-Transport-Security 25 points

Ensures secure HTTPS connections

Essential Headers (30 points)

X-Frame-Options 10 points

Prevents clickjacking attacks
X-Content-Type-Options 10 points

Prevents MIME type sniffing
Referrer-Policy 10 points

Controls referrer information

Modern Headers (12 points)

Cross-Origin Headers 9 points

COOP, COEP, CORP (3 points each)
Permissions-Policy 3 points

Controls browser features

Additional Headers (3 points)

Origin-Agent-Cluster 1 point
X-XSS-Protection 2 points

HTTP/3 Support (5 bonus points)

HTTP/3 & QUIC 5 points

Modern protocol support for improved performance and security

Score Evaluation

Grading Scale

A+

Score: ≥95

Perfect Security

Score: ≥85

Excellent Security

B+

Score: ≥75

Good Security

Score: ≥65

Adequate Security

C+

Score: ≥55

Basic Security

Score: ≥45

Needs Improvement

D+

Score: ≥35

Poor Security

Score: ≥25

Very Poor Security

Score: <25

Critical Security Issues

Score Components

Component	Maximum Points	Description
Critical Headers	50	CSP (25), HSTS (25)
Essential Headers	30	X-Frame-Options, X-Content-Type-Options, Referrer-Policy (10 each)
Modern Headers	12	CORP, COEP, COOP (3 each), Permissions-Policy (3
Additional Headers	3	X-XSS-Protection (2), Origin-Agent-Cluster (1)
HTTP/3 Support	5	Bonus points for HTTP/3 implementation

Frequently Asked Questions

HTTP Security Headers are special response headers that enhance website security by protecting against vulnerabilities. HTTP/3 is the latest version of the HTTP protocol that uses QUIC for improved performance and security. Together, they provide a comprehensive approach to modern web security and performance optimization.

Major websites may receive low scores due to several factors:

Legacy support requirements for older browsers
Complex infrastructure with multiple domains and services
Business requirements necessitating more permissive policies
Use of alternative security measures not visible through headers
Balancing between performance and strict security policies

HTTP/3 offers several improvements:

Faster connection establishment with QUIC protocol
Better performance on unreliable networks
Improved security through modern encryption
Reduced latency and faster page loads

Our scoring system evaluates security headers and HTTP/3 support on a 100-point scale:

Critical Headers (CSP, HSTS): 50 points
Essential Headers (X-Frame-Options, etc.): 30 points
Modern Features (HTTP/3, CORP): 15 points
Additional Headers: 5 points

To implement security headers and HTTP/3:

Configure web server with recommended security headers
Enable HTTP/3 support through your hosting provider
Follow our implementation guides for each header
Regularly test and update configurations