File Type Detector

Product Introduction

File Type Detector is a powerful pure frontend tool that accurately identifies the real file format by reading binary file header signatures (Magic Number). Unlike tools that rely only on file extensions or browser MIME types, our tool directly analyzes the binary content of files to ensure accurate identification results. All detection processes are completed in your browser without uploading any files to servers, fully protecting your privacy and data security.

Features

• Accurate identification of 40+ file formats
• Detection based on file header Magic Number signatures
• Comparison between browser detection and signature detection
• Displays hex signatures for advanced analysis
• Checks if file extension matches actual type
• Batch file detection support
• Pure frontend processing, no files uploaded to server
• Zero-latency detection with instant results
• Supports images, audio, video, documents, archives, fonts, executables
• Responsive design for desktop and mobile

How to Use

1. 1Click the upload area to select files, or drag and drop files into the upload area
2. 2The system automatically reads file header binary data and matches signatures
3. 3Detection results are displayed instantly, including file type, MIME type, hex signature
4. 4Compare browser detection type with signature detection type to identify mislabeled or spoofed files
5. 5To detect other files, continue uploading or click clear button to reset results

Common File Magic Numbers