What this tool covers
Inspect local file signature bytes, browser MIME type, extension, size and modification date. The result is based only on the source and settings supplied for the current run.
MIME & File Type Inspector
Inspect local file signature bytes, browser MIME type, extension, size and modification date.
Choose a local file
Browse or drop files here
Privacy: Your input is processed in the browser where supported and is not intentionally stored by this tool.
Result
Your output
Add the required input and run the tool.
How to use the result
Start with a representative input, inspect the first output, and change one option at a time. Copy or download the result only after checking it against the source.
Important limitation
A detected type does not prove a file is safe to open or execute.
About MIME & File Type Inspector
This MIME & File Type Inspector page is organised around the task described in the tool interface. Inspect local file signature bytes, browser MIME type, extension, size and modification date. The result changes when the source data or selected options change, so it is easy to run a second comparison.
For a typical workflow, use it to inspect a small representative sample before applying the same change in a production workflow. Start with a representative input, inspect the first result, then adjust one setting at a time if you need a different outcome.
Processing stays in the browser where the individual feature supports it. Live public checks use a protected, rate-limited site endpoint; avoid unnecessary sensitive data.
Using MIME & File Type Inspector well
Input
What to prepare
The code, structured data, expression, token, or sample value requested by the interface.
Result
What the tool returns
A transformed, generated, or diagnostic result for the submitted technical input.
Useful situations
- Checking data during development with MIME & File Type Inspector.
- Preparing a value for testing with MIME & File Type Inspector.
- Spotting formatting or validation problems before release with MIME & File Type Inspector.
Checks and limitations
- Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
- Check the result against the original input before using it in a live or important workflow.
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GenerateHow it works
1. Add the Required Input
The code, structured data, expression, token, or sample value requested by the interface.
2. Review MIME & File Type Inspector Options
Choose only the settings that apply to the result you need; leave optional controls unchanged when you are unsure.
3. Run MIME & File Type Inspector
Start the task and wait for the interface to return its result or a clear setup message.
4. Verify Before You Use It
Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
Frequently Asked Questions
The code, structured data, expression, token, or sample value requested by the interface. Start with a representative input and use only the options needed for your intended result.
A transformed, generated, or diagnostic result for the submitted technical input. Check the result against the original input before using it in a live or important workflow.
Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
Processing stays in the browser where the individual feature supports it. Live public checks use a protected, rate-limited site endpoint; avoid unnecessary sensitive data.
The page can be used without creating a visitor account. Your browser or device may limit unusually large files or demanding media jobs.