File Type Detector
Upload a file and detect its type locally in your browser.
Runs in your browser. Your input stays on this device.
Drag and drop a file here, or
Detection runs locally in your browser. Files are not uploaded.
Common questions
Quick answers before you use this tool.
Runs in your browser. Your input stays on this device.
No account is required. Open the tool and use it right away.
Yes. It checks the file’s internal signature (magic bytes), so a file named
.jpg can still be identified as a PNG if the actual data is PNG.