RootUtils

File Inspector

Client-Side Secure

Free online File Inspector. Analyze file headers, MIME types, and metadata securely in your browser. Identify unknown file types without uploading.

Is this tool broken?

Let us know if you found a bug or have a feature request.

Online File Forensics & Metadata Viewer

Analyze files securely in your browser to identify their true type via Magic Bytes, view EXIF metadata, and detect hidden strings or malicious patterns.

Cybersecurity professionals rely on this "Hex Viewer" approach to spot file extension spoofing (e.g., an .exe disguised as a .pdf).

Entropy Analysis

Shannon Entropy measures data randomness (0-8). High entropy (7.5+) often indicates compressed data (ZIP/PNG) or encrypted malware payloads hidden inside a file.

Magic Bytes

Files start with a unique signature (e.g., FF D8 FF for JPEG). We check this signature to identify the real file format, ignoring the extension.

Strings Extraction

We scan the binary for readable text strings. Finding URLs, IP addresses, or PowerShell commands inside a seemingly innocent image is a major red flag for steganography.

FAQ

Is it safe to upload malware?

Yes. The file is analyzed locally in your browser's sandbox using JavaScript. It is never executed or uploaded to a server, so it cannot infect your computer just by being analyzed here.

What is EXIF data?

EXIF data is metadata stored in photos (Camera model, GPS location, Date taken). Our tool extracts and displays this hidden information for privacy checking.