Metadata Forensics

Metadata Forensics gives you an instant, 100% offline view of any file real metadata - directly in your Firefox sidebar.

Only what actually works - reliably, every time. No internal system “creation dates” that the browser can’t see.

Features: • Drop any file (or many) => instant analysis. • Filesystem lastModified (the only timestamp the browser can provide). • SHA-256 hash for forensic integrity. • Deep text file inspection: encoding, line endings, shebang, preview. • Full audio tag extraction (title, artist, album, year, duration). • Batch comparison table when multiple files are loaded. • “Copy all as JSON” with one click. • Export all tables → clean CSV. • Warning for empty file or modified date in future. • Dark mode (follows system preference). • Works on air-gapped systems.

Supported formats: • Full analysis: All text/source files + MP3, M4A, FLAC, WAV, OGG, Opus, MP4/MKV audio tags. • Basic info (size, lastModified, SHA-256): Images, PDFs, Office docs, archives, binaries. • 100% accurate - never lies about what it can or cannot see.

🔒 Security-First Design: • No permissions. • No network connections. • No tracking. • No data collection.

Perfect for: • Digital forensics & incident response. • Security analysts verifying file integrity. • Developers inspecting logs, scripts, or assets. • Anyone who prefers not to upload files to online “metadata viewers”.

Unlike some web tools that lie about timestamps, track you, or require interne, Metadata Forensics tells the truth, stays private, and works forever and offline.

Built for people who value accuracy and privacy above all.