Link Checker
Check URL safety instantly — Verify HTTPS security, detect phishing links, analyze suspicious domains, and protect against malware threats before clicking any link
About What is a Link Checker?
A Link Checker (also known as URL checker or link safety checker) is a free online security tool that analyzes web links and URLs for potential threats, phishing attempts, malware indicators, and security vulnerabilities before you click them. Our advanced link checker performs comprehensive real-time analysis including HTTPS/SSL certificate verification, IP address domain detection, Punycode domain decoding (to detect homograph attacks), suspicious TLD identification (.xyz, .top, .click), phishing keyword pattern matching, and subdomain structure validation.
All URL security analysis happens 100% client-side in your browser using JavaScript, ensuring complete privacy and data security. Your links never leave your device, are never logged, stored, or transmitted to any server. This makes our link checker perfect for checking sensitive URLs, shortened links from bit.ly or tinyurl.com, email links, social media URLs, and suspicious links from unknown sources.
The tool works with all URL protocols (HTTP, HTTPS), all domain types (com, org, net, io, etc.), international domains with special characters, and IP-based URLs. It's compatible with all modern browsers including Chrome, Firefox, Safari, Edge, and Opera on Windows, Mac, Linux, iOS, and Android devices. No registration, signup, or download required.
Key Features of Link Checker
Everything you need for professional link checker
HTTPS/SSL Security Verification
Instantly verify SSL/TLS encryption status and check if websites use secure HTTPS protocol or vulnerable HTTP connection.
Advanced Phishing Detection
Detects phishing patterns including IP address domains, suspicious keywords, fake brand impersonation attempts, and malicious URL structures.
Punycode Domain Decoder
Automatically detects and decodes international Punycode domains to reveal actual Unicode characters and prevent homograph attacks.
Real-Time Instant Analysis
Lightning-fast URL scanning with zero latency. Get comprehensive security analysis results in milliseconds using client-side JavaScript.
Privacy-First Architecture
Complete client-side processing ensures 100% privacy. URLs never transmitted to servers, zero data logging, no tracking cookies.
Detailed Security Reports
Color-coded threat levels with detailed explanations including HTTPS status, domain analysis, suspicious pattern detection, and recommendations.
How to Use Link Checker
Follow these simple steps to get started
Enter the URL
Paste or type the suspicious link into the URL input field. Include the full URL with https:// or http://.
Click Check Link
Click the Check Link button to start the security analysis. The tool analyzes URL structure, protocol, domain, and threats.
Review Analysis
Examine the detailed security report showing HTTPS status, domain analysis, phishing indicators, and risk level.
Make Decision
Based on the security analysis, decide whether to proceed with the link or avoid it. High-risk links should never be visited.
Pro Tips
- Always check links from unknown senders or suspicious emails before clicking - even if they appear to come from trusted sources.
- Be extra cautious with shortened URLs from services like bit.ly - they hide the actual destination.
- Look for HTTPS in the URL - legitimate sites handling sensitive data should always use encrypted connections.
- If a link seems too good to be true (free prizes, urgent warnings), it probably is. Trust your instincts.
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Frequently Asked Questions
Everything you need to know about Link Checker
A Link Checker is an online security tool that analyzes URLs (web links) for potential threats, phishing attempts, and security vulnerabilities. Our link checker performs comprehensive client-side analysis including HTTPS verification, IP address domain detection, Punycode domain decoding, suspicious keyword identification, and subdomain validation. All checks are performed instantly in your browser using advanced JavaScript algorithms.
No security tool can guarantee 100% accuracy. This tool performs sophisticated client-side heuristic checks and pattern analysis to identify common threats and suspicious indicators. However, it does not connect to real-time threat databases. It should be used as a first line of defense in conjunction with other security practices.
Absolutely! Privacy is our top priority. All URL analysis happens entirely in your browser using client-side JavaScript. Your links are never transmitted to our servers, stored in any database, logged, or shared with third parties. We have zero access to the URLs you check.
Punycode is an encoding method that allows international characters (like ö, ñ, ą) to be represented in domain names using only ASCII characters (starting with 'xn--'). Cybercriminals exploit Punycode for homograph attacks, creating domains that visually resemble trusted sites (e.g., 'goọgle.com' vs 'google.com').
HTTPS (Hypertext Transfer Protocol Secure) encrypts all data transmitted between your browser and the website using SSL/TLS protocols. This encryption prevents man-in-the-middle attacks, eavesdropping, and data interception. Without HTTPS, sensitive information can be intercepted by attackers.
Do not click or visit the flagged link under any circumstances. If you received it from someone you know, contact them through a different, verified channel. Never enter personal information on high-risk sites. Report phishing attempts to your email provider or relevant authorities.
Our link checker identifies common phishing patterns, suspicious domain structures, and security red flags through heuristic analysis. However, it cannot scan for all malware types or detect zero-day threats. For comprehensive security, use this tool alongside antivirus software and browser security extensions.
Top-Level Domains (TLDs) like .xyz, .top, .click, .zip, and .mov are statistically associated with higher rates of spam, phishing, and malicious activity. While legitimate sites can use these TLDs, they warrant extra scrutiny when evaluating link safety.
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