File type inspector
Compare extension and MIME metadata with supported magic bytes.
A simple path to your result
Choose local files or enter content, set the options, then download or copy the result.
Processed in this browser tab
Good to know
Inputs are processed locally in this browser tab.
How to use file type inspector
Select a local file.
Review the available options.
Run the tool and review the result in the page.
When it helps
Compare a file extension with its recognized signature.
Formats and limits
Input: local files. Output: on-page result. Browser support and available device memory can affect large jobs.
Inputs are processed locally in this browser tab.
Privacy and local processing
The selected content is processed in this browser tab. GoldieKit loads application code and, for portrait background removal, model files from the site; the tool does not upload your input for processing. See the privacy notice for network and hosting details.
Common questions
Which formats does this tool handle?
Input: local files. Output: on-page result.
Is an account required?
No. You can use this tool in your browser without creating an account.