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SiteScanAPI VS HTTP Header Spy

Compare SiteScanAPI VS HTTP Header Spy and see what are their differences

SiteScanAPI

Automate your security headers check with our website security scanner API. Instant header checker for HSTS, CSP, securityheader rules, and header security.

Rating
0 reviews
Pricing
Free
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Alternatives Is it good?
HTT
HTTP Header Spy

HTTP Header Spy is a browser extension that allows you to inspect the request and response header of any website URL.

Rating
0 reviews
Promote on VibeVoted
Alternatives Is it good?
Captain Compliance
Leader in data privacy software to automate privacy compliance requirements. Our team of privacy experts provide enterprise grade solutions at a mid-market price with white glove service to help with complex privacy requirements. sponsored

Which is more popular?

Developer Tools popularity
26% vs 74%
alternatives listed
16 vs 11

Base details

Website, pricing, platforms and company facts side by side.

SiteScanAPI
HTT
HTTP Header Spy
Website sitescanapi.com donationbasedhosting.org
Pricing
Free Official pricing
—
Platforms
Web REST API SaaS Cloud +1
—
Listed in
Website Security Web Security Developer Tools APIs Vulnerability Scanners DevSecOps Monitoring Tools Website Monitoring Security & Privacy Cyber Security Vulnerability Scanner Web Application Security +9
Development Developer Tools SEO Tools SEO +1

About SiteScanAPI and HTTP Header Spy

In their own words, as submitted to SaaSHub.

SiteScanAPI
HTT
HTTP Header Spy

SiteScanAPI is a fast, developer-first website security scanner and edge REST API engineered to audit defensive HTTP headers, DNS configurations, and perimeter security posture in under 250ms. Unlike heavy, intrusive vulnerability scanners that risk production downtime, SiteScanAPI performs 100%...

Read more about SiteScanAPI

No description of HTTP Header Spy yet.

Features and specs

What each product offers, as listed by its team.

SiteScanAPI 5 features
HTT
HTTP Header Spy 4 features
  • Security headers audit
    Deterministic checks for HSTS preloading, CSP, X-Frame-Options, Referrer, and Permissions policies.
  • Developer REST API
    Zero-authentication JSON endpoint with <250ms edge latency for CI/CD pipelines and DevSecOps.
  • DNS & Email Security
    Real-time DNS-over-HTTPS (DoH) verification for RFC-compliant SPF and DMARC records.
  • Automated Fix Generation
    Ready-to-paste remediation snippets for Nginx, Apache, Caddy, and Cloudflare rules.
  • Origin Isolation & Leaks
    Verifies COOP/COEP isolation and detects server stack fingerprint leaks (Server, X-Powered-By).
  • Ease of Use
    HTTP Header Spy is designed with a user-friendly interface that allows users to easily inspect HTTP headers without requiring advanced technical knowledge.
  • Quick Accessibility
    As a browser extension, it is quickly accessible and integrates seamlessly into the user's browser, allowing for fast header inspections during browsing.
  • Lightweight
    The extension is lightweight, ensuring that it does not require extensive system resources or slow down browser performance.
  • Free to Use
    The tool is available for free, following a donation-based model, which makes it accessible to a wide range of users without financial constraints.

Possible disadvantages

  • Limited Advanced Features
    It may lack advanced features that professional developers or network analysts might require, limiting its utility for more complex tasks.
  • Dependency on Browser
    As a browser extension, its functionality is tied to the browser's stability and compatibility, potentially limiting its usage across different platforms or environments.
  • Privacy Concerns
    Users might be concerned about the extension's permissions and data handling practices, although these concerns are common with many browser extensions.
  • Support and Updates
    Being a donation-based project, there might be limitations in terms of regular updates, features, and dedicated customer support compared to commercial software.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
SiteScanAPI
HTT
HTTP Header Spy
26% 26%
Developer Tools
74% 74%
100% 100%
Web Security
0% 0%
0% 0%
Development
100% 100%
100% 100%
Monitoring Tools
0% 0%

Questions & Answers

As answered by people managing SiteScanAPI and HTTP Header Spy.

What makes your product unique?

SiteScanAPI's answer

SiteScanAPI bridges the gap between manual header checkers and complex, heavy vulnerability scanners. It is 100% passive, zero-auth, and runs entirely on global edge infrastructure (Cloudflare Workers) to deliver deterministic perimeter security audits in under 250 milliseconds.

Unlike traditional tools that only look at a handful of legacy HTTP headers, SiteScanAPI inspects the complete perimeter: • Comprehensive Headers: Strict-Transport-Security with preload validation, Content-Security-Policy (CSP), X-Frame-Options, and Referrer-Policy. • Next-Gen Origin Isolation: Verification of COOP, COEP, and CORP browser sandboxing boundaries. • DNS-over-HTTPS (DoH) Security: Real-time email authentication audits for RFC-compliant SPF and DMARC records. • Information Leak Detection: Stripping server banners (Server, X-Powered-By). • RFC 9116 Compliance: Verification of /.well-known/security.txt disclosure files. • Automated Remediation: Generates instant copy-paste configuration directives for Nginx, Apache, Caddy, Cloudflare, and modern frameworks.

Why should a person choose your product over its competitors?

SiteScanAPI's answer

Most competing security scanners suffer from three major drawbacks: they are slow (waiting in multi-second queues), lack a developer REST API, or require cumbersome account signups with paywalled API keys.

Developers and security teams choose SiteScanAPI because: 1. Zero-Auth REST API: You can query https://sitescanapi.com/api/scan?url=yourdomain.com right from curl, CI/CD pipelines, or monitoring bots without API keys, tokens, or sign-up walls. 2. Edge Performance (<250ms): Audits complete almost instantly from the closest global edge node. 3. Non-Intrusive & Zero Downtime Risk: 100% passive HTTP and DNS interrogation ensures your firewalls aren't tripped and production uptime is never jeopardized. 4. Ready-to-Paste Fixes: Instead of just reporting warnings, SiteScanAPI produces exact server configuration snippets so you can fix failing grades in minutes.

How would you describe the primary audience of your product?

SiteScanAPI's answer

The primary audience consists of: • Web Developers & Full-Stack Engineers: Who want to verify that production deployments enforce modern defensive headers like HSTS and CSP. • DevOps & DevSecOps Engineers: Who need a lightweight, zero-key REST API to gate release builds in GitHub Actions, GitLab CI, or deployment webhooks. • Security Analysts & Penetration Testers: Looking for instant, passive reconnaissance on target domains before conducting in-depth assessments. • Digital Agencies & Webmasters: Auditing client web applications for SSL/TLS, email spoofing (SPF/DMARC), and vulnerability disclosure compliance.

Which are the primary technologies used for building your product?

SiteScanAPI's answer

SiteScanAPI is engineered for ultra-low latency, resilience, and minimal client overhead using: • Cloudflare Workers / Edge Runtime: Powers both the globally distributed scanning engine and the sub-250ms REST API. • Astro (v7): Delivers zero-JS editorial performance, rapid static rendering, and server-side edge rendering. • TypeScript: Type-safe RFC evaluation logic and deterministic scoring algorithms. • React 19: Powers the real-time interactive Scanner Dashboard island. • Tailwind CSS (v4): Custom editorial design system engineered for visual clarity and accessibility. • DNS-over-HTTPS (DoH): Cryptographic DNS queries for real-time SPF and DMARC email security validation.

What's the story behind your product?

SiteScanAPI's answer

Over 60% of production websites fail basic defensive security audits—not because engineering teams don't care about security, but because perimeter configurations are fragmented across dozens of RFCs, W3C drafts, and server syntaxes.

Existing diagnostic tools were built a decade ago: they were clunky, loaded with ads, slow to respond, and lacked a simple API that could easily fail a build in modern CI/CD pipelines.

SiteScanAPI was built with a clear mission: to democratize perimeter web security. By leveraging modern edge computing, we made defensive security audits instant, deterministic, developer-first, and completely accessible to every engineer without friction or cost barriers.

Who are some of the biggest customers of your product?

SiteScanAPI's answer

  • Independent SaaS Founders & Startups
  • Digital Web Agencies & Managed Service Providers
  • DevSecOps Teams Automating CI/CD Release Gates
  • Open-Source Project Maintainers
  • Cloudflare & Vercel Edge Application Developers
  • Cybersecurity Consultants & Penetration Testers

User comments

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Alternatives to SiteScanAPI and HTTP Header Spy

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