ESET Online Scanner
Free browser-based malware detection tool for Windows - no installation required
Download ESET Online Scanner
Free malware detection with no registration required
Filename
esetonlinescanner.exe
Type
Portable Executable
License
Freeware
About ESET Online Scanner
ESET Online Scanner provides comprehensive malware detection without requiring permanent installation on your Windows system. This free security tool performs deep scans to identify viruses, trojans, rootkits, and other malicious software that may be hiding on your computer. The scanner runs directly from your web browser, making it perfect for quick security checks on any Windows computer. It uses the same award-winning ThreatSense scanning technology and signatures as ESET Smart Security and ESET NOD32 Antivirus.
Key Features
No Installation Required
No lengthy forms or installations - just a quick, secure download. Runs directly from your browser on any Windows computer.
Advanced Threat Detection
Uses ESET's award-winning detection engine to identify both known and emerging threats that other scanners might miss.
Works with Existing Antivirus
Easy-to-use tool that runs alongside any existing antivirus. Perfect as a second-opinion scanner to verify your current security.
Completely Free
No commitment, no registration – completely free one-time scan. Provides an effective check for malware removal at no cost.
How It Works
1
Download the Scanner
Click the download button above to get the ESET Online Scanner executable - no lengthy forms or installations required.
2
Launch and Configure
Once downloaded, follow the on-screen instructions to launch the scanner. The intuitive interface guides you through each step.
3
Run Full System Scan
Initiate a full system scan. A progress bar and clear indicators show you exactly what's being scanned in real-time.
4
Review and Remove
After the scan, review detected threats in a detailed report. Choose whether to quarantine or remove each item safely.
When to Use ESET Online Scanner
Suspicious Activity
Slow performance, unexpected pop-ups or unusual behavior on your system.
Second Opinion Scan
Verify your current antivirus is catching everything with a complementary scan.
Quick Checkup
Weekly or monthly scans to maintain system health and catch threats early.
Shared Computers
Perfect for systems used by multiple people or where you can't install permanent software.
System Requirements
Windows 11/10/8.1/8/7
350-400 MB disk space
500 MB RAM
Internet connection
Online Scanner vs Full Protection
🌐 ESET Online Scanner
Free one-time scans
No installation required
Works with existing antivirus
Deep malware detection
No real-time protection
Manual scanning only
Perfect for immediate threat removal and system verification.
🛡️ ESET Full Protection
Continuous real-time protection
Advanced firewall
Password manager
Automatic updates
24/7 threat monitoring
Paid subscription
Long-term safeguard for ongoing digital security.
Frequently Asked Questions
Is ESET Online Scanner really free?
Yes. The ESET Online Scanner is completely free and provides an effective one-time check for malware removal. No payment or registration required.
How often should I run the scanner?
As a best practice, we suggest running a quick scan weekly or monthly. It's particularly useful when you suspect issues or want periodic system verification.
Can I use it with my existing antivirus?
Yes, it's an easy-to-use tool that can run alongside any existing antivirus. It's designed specifically as a complementary scanning tool.
What does it detect and remove?
The scanner finds and removes viruses, Trojans, spyware, phishing and other internet threats. It identifies harmful programs that can disrupt system operations and unwanted software that secretly monitors your activity.
Important Note
Always download ESET Online Scanner from official sources. This page provides the tool for your convenience - all scans are performed using ESET's official scanning engine.