File type detector
This tool compares the local filename and MIME declaration with signatures for common image, archive, PDF, and text formats. The complete operation runs in temporary browser memory, so the input is never uploaded or stored by LocalKit.
The input stays available if you need to adjust a setting.
How to use file type detector
- 1
Add the source values or files shown in the workbench.
- 2
Choose the settings for file type detector.
- 3
Run the tool, inspect the local result, then copy or download it.
A realistic example
Check whether a file named `.dat` begins with a PNG or PDF signature. The source and generated result remain in this browser tab throughout the operation.
Supported formats and limits
Input: any local file. Output: file facts and likely type.
- Signature detection covers common formats and is not a security scanner.
- Available memory and browser limits still apply to very large inputs.
Questions people ask
What does file type detector change?
This tool compares the local filename and MIME declaration with signatures for common image, archive, PDF, and text formats.
Is any input sent to a server?
No. LocalKit performs this operation in your current browser tab.