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How to Secure a Static Site

Protect your static website with these essential measures.
Static sites are less complex than dynamic sites, but they still require security. This guide covers HTTPS, security headers, CSP, cookie security, and other best practices for static sites. OffURL can scan any static site and identify security gaps.
150+ Security checks
16 Categories covered
30s Scan duration
100% Detection coverage
Security Score 85%

Key Findings

Missing HTTPS critical
No Security Headers high
No CSP high
Missing HSTS medium

1. HTTPS is Mandatory Even for Static Sites

Static sites often use CDNs or hosting platforms like Netlify, Vercel, or Cloudflare Pages. All of these support HTTPS. Enable HTTPS and redirect all HTTP to HTTPS. Use HSTS to enforce HTTPS on subsequent visits. OffURL checks if your static site uses HTTPS.

2. Security Headers for Static Sites

Security headers are essential even for static sites. Add: Content‑Security‑Policy (CSP) to prevent XSS, X‑Frame‑Options: DENY to prevent clickjacking, X‑Content‑Type‑Options: nosniff, and Referrer‑Policy: strict-origin-when-cross-origin. Configure these via `_headers` files (Netlify, Vercel) or server settings.

3. Content Security Policy (CSP) for Static Sites

CSP is critical for static sites that include third‑party scripts (analytics, CDN). Start with a restrictive policy: `default-src 'self'; script-src 'self' https://trusted-cdn.com; style-src 'self'`. Use report‑only mode to test. Avoid `unsafe-inline` unless absolutely necessary.

4. Secure Cookies on Static Sites

If your static site uses authentication or analytics cookies, ensure they have the `Secure`, `HttpOnly`, and `SameSite` flags. For analytics, use `SameSite=Lax`. OffURL can detect cookie security issues on static sites.

The Problem

Static sites are often overlooked for security
  • No HTTPS enabled
  • Missing security headers
  • No CSP to prevent XSS
  • Insecure cookie settings
  • Not redirecting HTTP to HTTPS

OffURL Solution

OffURL detects security issues on static sites and provides fix steps
  • Check for HTTPS and redirects
  • Scan security headers
  • Analyze CSP configuration
  • Check cookie security
  • Provide static‑site specific recommendations

Key Features

Static site detection

We detect if your site is static and check for common issues.

Header check

We scan for security headers and CSP.

LLM‑ready PDF

Get a report formatted for ingestion into your AI assistant.

Actionable fixes

Receive specific recommendations for your static site.

How do I check if my static site is secure?
Run an OffURL audit. We check for HTTPS, security headers, CSP, and cookie security. Even though your site is static, these security measures are important. You'll get a detailed report with fix steps.

Frequently Asked Questions

What is OffURL and how does it work?
OffURL is a comprehensive website security and performance audit tool. It scans your site for 150+ checks including SSL, security headers, malware, XSS, SQL injection, email security, and more.
Is the security audit really free?
Yes. Your first security report is completely free and includes premium features like detailed findings, fix steps, and the full 150+ checks.
How can I use AI to fix security issues?
Download the premium PDF report and paste it into your preferred LLM (Claude, ChatGPT, Gemini, Cursor) with a prompt asking for specific fixes for your framework.
How long does the security audit take?
Most audits complete in 10‑30 seconds. The scan includes DNS lookups, SSL analysis, HTTP requests, port scanning, and vulnerability tests.
Do I need to create an account?
No. OffURL works without registration. Your first audit is free with premium features included.
What vulnerabilities can OffURL detect?
OffURL detects XSS, SQL Injection, NoSQL Injection, LDAP Injection, XXE, SSRF, SSTI, Code Injection, Command Injection, Open Redirect, Path Traversal, LFI, RFI, CRLF Injection, Parameter Pollution, and CORS Misconfiguration.

Check your static site security – first report free.

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