Drag and drop a file or click to upload
All file types supported
🔍 What is Hex Viewer?
Hex Viewer displays binary file data in hexadecimal (Hex) or binary format. All files are ultimately composed of byte sequences (0-255), and this tool lets you inspect them visually. It is used for file header analysis, data format verification, corrupted file debugging, and reverse engineering. All processing happens in your browser — files are never uploaded to any server.
📋 Common File Signatures (Magic Numbers)
Frequently Asked Questions
What is a file signature (magic number)?▼
A unique identifier stored in the first few bytes of a file. It identifies the actual file format regardless of the file extension. For example, PNG files always start with 89 50 4E 47.
Are files uploaded to a server?▼
No. All file processing is performed locally using the browser FileReader API. File data is never transmitted over the network.
Can I open large files?▼
Since the entire file is loaded into memory, files over several hundred MB may slow down the browser. Use the 1KB pagination to browse efficiently.
What is Hex/Binary Viewer?
View raw file bytes in hexadecimal format with ASCII representation. Useful for analyzing file headers, binary data inspection, and reverse engineering.