Find out what a file really is, not what its name claims.
Content-based detection for 200+ file types. Drop a file, get a verdict in under a second — no upload, no account, no tracking.
Drop files here or click to browse
Supports any file type • 200+ file types detected • Multiple files supported • Runs entirely in your browser
From documents and images to executables, archives, and weird old formats nobody else handles.
Zero server uploads. All analysis happens locally in your browser via WebAssembly.
Cutting-edge AI that runs faster than reading a file extension — and is correct more often.
How It Works
Detection that doesn't trust the filename.
An extension is a hint. A MIME type is a guess. We read the bytes — that's the only thing that can't lie.
Built for the people who handle the weird files.
From security researchers to data engineers — every workflow that needs to know what's really inside.
Security Analysis & Forensics
Identify disguised malware, analyze suspicious files, and verify file authenticity for cybersecurity investigations.
Development & Debugging
Quickly identify unknown file formats in your projects, verify file types, and debug data processing workflows.
Data Management & Organization
Organize large file collections, identify unknown files, and ensure proper categorization of your digital assets.
Digital Forensics & Investigation
Analyze evidence files, recover file types from corrupted data, and investigate digital artifacts with confidence.
Quality Assurance & Testing
Validate file uploads, test data processing pipelines, and ensure your applications handle files correctly.
IT & System Administration
Audit file systems, identify unknown binaries, and keep server environments clean by verifying every file at a glance.