Upload your mysterious .DAT files and discover what's inside.
No registration required • 100% client-side • Privacy-first
or click to browse files
Automatically identifies if your file is CSV, binary, plain text, or unknown format using advanced pattern recognition.
Preview your file content with proper formatting, table view for CSV files, and smart encoding detection.
Examine binary data with hex dump view, detect file encoding, and analyze internal structure patterns.
WhatsInDat can analyze various .DAT file formats
Spreadsheet data with any delimiter
Log files, configuration files
Images, executables, databases
We'll help you figure it out!