MIME Type Checker
Check a likely MIME type from a filename or inspect browser-reported metadata from an uploaded file.
This page estimates MIME type from extension and browser metadata. It does not perform deep binary sniffing.
| Metric | Value |
|---|
Privacy: checks run locally in your browser. Files are not uploaded or transmitted.
How it works
This page looks at the filename extension and compares it to a built-in MIME mapping.
If you upload a file, it also shows browser-reported metadata such as File.type and size.
Examples
- document.pdf → application/pdf
- photo.jpg → image/jpeg
- data.json → application/json
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- What does this MIME type checker do?
It estimates a file MIME type from a filename extension and can also read browser-reported metadata from an uploaded file.
- Does it inspect raw file bytes?
No. This page does not do full binary signature analysis. It uses filename extension mapping and browser file metadata when available.
- Why can MIME type results differ across tools?
Different tools may rely on different sources such as file extensions, browser metadata, OS file associations, or binary sniffing.
- Is my file uploaded to a server?
No. File inspection runs locally in your browser and no file is uploaded or transmitted.