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Security Headers

Grade a website's HTTP security headers and see what is missing.

Visit Security HeadersFree4.6

Built with love by Shushant Lakhyani. Building bestproductivityresources.com

What is Security Headers?

Security Headers scans any website and grades its HTTP response headers from A+ to F, showing which protections such as Content Security Policy or HSTS are present or missing. Each result explains the headers in plain terms, and the scan is free.

Pros

  • Simple letter grade
  • Explains each header
  • Free and instant

Cons

  • Covers headers only, not full security
  • Results are public by default unless hidden

Who should use Security Headers

Developers and site owners who want a quick check of basic web security.

Who may not need it

Anyone who needs a full security audit.

Security Headers alternatives

Similar resources to Security Headers, picked from the directory.

VirusTotal

Focus: malware scan, links and antivirus. Shares security with Security Headers. Rated 4.7 (Security Headers: 4.6).

Web AppFreeWeb

shadcn/ui

Focus: ui components, react and tailwind. Shares web development with Security Headers. A framework, not a web app. Rated 4.9 (Security Headers: 4.6).

FrameworkFreeWeb

Visual Studio Code

Focus: code editor, extensions and dreamweaver alternative. Shares web development with Security Headers. A desktop app, not a web app. Adds Windows, macOS and Linux. Rated 4.8 (Security Headers: 4.6).

Desktop AppFreeWindows, macOS

Agent Governance Toolkit

Focus: ai governance, agents and policy. Shares security with Security Headers. A framework, not a web app. Adds Windows, macOS and Linux. Rated 4.7 (Security Headers: 4.6).

FrameworkFreeWindows, macOS

daisyUI

Focus: tailwind css, ui components and themes. Shares web development with Security Headers. A framework, not a web app. Rated 4.7 (Security Headers: 4.6).

FrameworkFreeWeb

Free alternatives to Security Headers

Free resources that cover similar ground.

hol-guard

Focus: ai agents, prompt injection and guardrails. Shares security with Security Headers. An AI tool, not a web app. Adds macOS, Windows and Linux. Rated 4.7 (Security Headers: 4.6).

AI ToolFreemacOS, Windows

DeepTeam

Focus: red teaming, llm and ai agents. Shares security with Security Headers. An AI tool, not a web app. Rated 4.5 (Security Headers: 4.6).

AI ToolFreeCross-Platform

How To Secure A Linux Server

Focus: linux, server administration and devops. Shares security with Security Headers. A method, not a web app. Adds Linux and Offline. Rated 4.5 (Security Headers: 4.6).

MethodFreeLinux, Web

mira

Focus: code review, ai and self-hosted. Shares security with Security Headers. An AI tool, not a web app. Rated 4.5 (Security Headers: 4.6).

AI ToolFreeCross-Platform, Web

AFDocs

Focus: documentation, agent-friendly docs and cli. Shares audit with Security Headers. An AI tool, not a web app. Rated 4.4 (Security Headers: 4.6).

AI ToolFreeCross-Platform

Minimal

Focus: agent sandbox, isolation and ai agents. Shares security with Security Headers. A desktop app, not a web app. Adds macOS, Windows and Linux. Rated 4.4 (Security Headers: 4.6).

Desktop AppFreemacOS, Windows
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