Security Headers Checker
Security Headers Checker audits key HTTP security headers, including HSTS, CSP, X-Frame-Options, and Referrer-Policy, helping you detect missing protections and reduce website security risks.
Empty Result
No Data Found
There is no data available to show right now. Please try changing your search, filter, or scan again.
Complete Guide
Relevant Space
01→
Email Security Checker
Run a combined SPF, DKIM, and DMARC audit on any domain to get a full email security health report.
Explore Space
02→
CORS Checker
Inspect Cross-Origin Resource Sharing headers on any URL and detect misconfigurations that expose security risks.
Explore Space
03→
Response Header Checker
View the complete raw HTTP response headers returned by any URL for debugging, security, and performance review.
Explore Space
04→
Mixed Content Checker
Detect insecure HTTP resources loaded on HTTPS pages that trigger browser security warnings and hurt trust.
Explore Space
05→
DMARC Checker
Fetch and analyze the DMARC policy for any domain to validate email security and deliverability configuration.
Explore Space
06→
Browser Cache Checker
Inspect Cache-Control, ETag, and Expires headers on any URL to audit browser caching configuration.
Explore Space
Related Articles
01
Robots.txt Checker: Test, Validate & Fix Your File — Free Google Tester Alternative
Your robots.txt file is the most dangerous file on your website. One stray character — a single Disallow: / left over from a staging environment — can wipe your entire site out of Google within days. And yet most people edit it blind, save it, and hope. The fix is simple: test before you trust. Paste any domain into the Robots Txt Checker and see exactly which rules are live, what they block, and whether your most important pages are reachable — instantly, with no signup. This guide covers everything: what robots.txt actually does, how to read every directive, how to fix the two Search Console errors everyone runs into, how to control AI crawlers like GPTBot and ClaudeBot, and the mistakes that quietly tank traffic.
02
Prafero: The All-in-One Website Audit Platform for SEO, Performance, Security, DNS, and Technology Insights
A successful website is not only about attractive design or good content. Behind every high-performing website, there are many technical factors that affect search rankings, user experience, security, loading speed, accessibility, and trust. If one part of your website is weak, it can reduce visibility, slow down performance, create security risks, or make users leave before they take action.
03
Does Page Speed Affect SEO? Yes — Here's Exactly How (2026)
Page speed affects SEO directly and indirectly. Google uses three Core Web Vitals metrics — LCP, INP, and CLS — as confirmed ranking signals measured from real user data. Slow pages also generate higher bounce rates and shorter dwell time, which send negative behavioural signals that compound the direct ranking penalty. In 2026, slow sites additionally lose visibility in AI search engines including Google AI Overviews, ChatGPT, and Perplexity. The short answer is yes. The full answer is that speed now affects your rankings through four separate channels simultaneously — and most sites are only optimising for one of them. Want to know where you stand right now? Run your URL through Prafero's free page speed checker — no signup, instant Core Web Vitals results.
04
How to Check Meta Tags of Any Website (Free, No Signup)
Meta tags live in the <head> section of every webpage — invisible when you load the page normally, but read by every search engine and social platform that touches that URL. If you want to see what a page's title tag, meta description, canonical, or Open Graph tags actually say, you have three options: dig through the browser's developer tools, view the raw page source, or use a tool that extracts everything in one pass. This guide walks through all three methods, what to look for once you can see the tags, and when each approach makes sense. If you just want the fastest route, skip to Method 3 and use Prafero's free Meta Tag Analyzer — paste any URL and every meta tag appears instantly with no signup required.