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File Type Detection

Identify file types through content analysis. Paste text or upload files to determine their true type, even when extensions are missing or misleading.

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Features

  • Detects 100+ content types: programming languages, documents, images, archives, media files
  • Analyzes text snippets and uploaded files
  • Shows confidence scores for all identified types
  • Runs in your browser; nothing is sent to any server
  • Files and text never leave your device

How It Works

The tool analyzes content patterns to determine file types:

  • Examines byte sequences and file structure
  • Analyzes formatting and statistical patterns
  • Considers multiple indicators beyond extensions

Results include confidence scores for each file type, showing the most likely match and alternatives.

Use Cases

Security & Validation

  • Verify uploaded files match their claimed extensions
  • Detect files disguised with misleading extensions
  • Screen for malicious content

Content Management

  • Identify files with missing or incorrect extensions
  • Categorize and organize files by actual type
  • Ensure files match expected formats

Development & Testing

  • Test file type detection in applications
  • Validate content type handling
  • Debug file processing issues

Supported File Types

Detects 100+ file types, such as:

  • Programming: JavaScript, Python, Java, C++, Rust, Go, TypeScript
  • Documents: PDF, Word, Excel, PowerPoint, plain text
  • Images: JPEG, PNG, GIF, WebP, SVG, BMP, TIFF
  • Archives: ZIP, TAR, GZIP, RAR, 7z
  • Media: MP3, MP4, AVI, WebM, WAV
  • Web: HTML, CSS, JSON, XML, YAML

References