Powerful Features

Everything you need to analyze files deeply

Free

Real Format Identification

Binary-level deep analysis beyond simple magic numbers. Triple-detection model combining MIME, macOS UTI, and deep signature scanning. Identifies 97+ core formats.

Supported Formats

CAD (DWG/DXF), Encrypted archives, iWork formats, and thousands more via UTI

Free

Hidden Data Discovery

Comprehensive detection of hidden content across multiple file types.

✓ Hidden rows/sheets in Office documents
✓ White text and hidden comments
✓ Revision history and document variables
✓ VBA macros and external links
✓ PDF hidden layers and JavaScript
✓ LSB steganography in images

Free

Lightning-Fast Checksums

Industry-leading performance for hash calculations.

✓ MD5, SHA1, SHA256, SHA512, CRC32
✓ One-pass calculation (single file read)
✓ Memory mapping for files >10MB
✓ Background threading with progress
✓ 256-byte hex preview

Free

Metadata Audit

Extract comprehensive metadata from various file types.

✓ Author, edit time, app version
✓ EXIF data (camera, GPS, settings)
✓ macOS xAttr extended attributes
✓ Where From URLs (download source)
✓ Quarantine flags

Pro

Embedded Object Extraction

Extract and analyze embedded objects with unlimited depth.

✓ OLE containers (Word/Excel embedded)
✓ Multimedia resources
✓ PDF embedded files
✓ iWork internal resources
✓ Trailing/overlay data
✓ Pro Unlimited recursive analysis

Free

Anti-Spoofing Detection

Identifies true file types regardless of extension.

How It Works

Completely ignores file extensions. Analyzes magic numbers (file signatures) at the binary level to determine true file type - even when files are disguised or embedded within other files.

Free vs Pro

Feature	Free	Pro
Complete Fast Fingerprint Analysis (Hash/Hex/Format)	✓	✓
Advanced Format Recognition (CAD/iWork/Encrypted)	✓	✓
Full Metadata Extraction	✓	✓
Advanced Risk Scanning (LSB/PDF JS)	✓	✓
Hidden Content Discovery	✓	✓
Trailing Data Deep Analysis	✗	✓
Recursive Analysis (New Window)	✗	✓
Unlimited Embedded Object Extraction	✗	✓

Hidden Data Analysis Matrix

Comprehensive detection capabilities across different file types

Format Type	Hidden Content	Privacy & Security Risks
Office Word/Excel/PPT	• Hidden rows/sheets • White text • Comments & Annotations • Revision history • Document variables • VBA Macros • External links	• Personal privacy leakage • Modification trace recovery • VBA macro malware • Hidden data exfiltration
PDF	• Embedded attachments • Hidden layers (OCG) • Transparent/zero-size text • Redaction marks • JavaScript code • Comments & annotations	• Sensitive info bypass • Auto-executing JS scripts • Fake redaction risks • Hidden payload delivery
Images JPG/PNG/GIF	• EXIF data (GPS/Camera) • EOF trailing data • LSB steganography • Thumbnail data • ICC profiles	• Location tracking • Hidden file injection • Illegal info transmission • Covert channel communication
Archives ZIP/TAR/7Z	• Nested archives • Embedded executables/scripts • ZIP trailing data (Overlay) • Password-protected content • Symbolic links	• Malware payload hiding • Data exfiltration via archive • Deep nesting evasion • Archive-based attacks
Apple iWork Pages/Numbers/Keynote	• Internal Data resources • Embedded media • Property lists • Unused assets • Revision history	• Internal resource leakage • Uncleaned raw materials • Hidden content exposure • Metadata disclosure

Supported Formats

Comprehensive format support for deep analysis

Office Documents

Word (.doc, .docx)
Excel (.xls, .xlsx)
PowerPoint (.ppt, .pptx)
OLE & Modern XML

PDF Documents

Embedded attachments
Hidden layers (OCG)
JavaScript code
Redaction marks

Image Files

EXIF & GPS data
LSB Steganography
Trailing data
Thumbnail extraction

Archive Files

ZIP / TAR / 7Z
Nested archives
Overlay/trailing data
Hidden executables

Apple iWork

Pages
Numbers
Keynote
Internal resources

Ready to analyze your files?

Download File Deep Info today and discover what's hidden in your files.