VirusTotal

This free online security scanning service analyzes files, URLs, IP addresses, and domains using dozens of antivirus engines and website scanners simultaneously. The file scanning accepts files up to 650 megabytes, submitting them to over seventy antivirus engines using signature-based detection, heuristic analysis, and machine learning models, with results displaying each engine verdict as clean or malicious. The URL scanning checks website addresses against blocklists from security vendors and reputation systems, also fetching and analyzing page content for malicious scripts and suspicious redirects. The domain and IP analysis provides historical detection records, passive DNS data, associated malicious files, certificate information, and WHOIS registration data valuable for security research and incident investigation. The API enables programmatic integration for automated scanning pipelines. The community feature allows security researchers to comment on analysis results. The graph view visualizes relationships between files, domains, and IP addresses for threat intelligence analysis. Designed for security analysts, IT professionals, developers, and anyone checking files or websites for safety.