MIME Type Detector
Upload any file to view it as-is — everything is processed on your device, never sent anywhere.
Drag & drop a file, or click to choose
The file is processed in your browser and never uploaded to a server.
Example
Example Input
mystery.dat
Example Output
declared vs content MIME
How to Use
- 1Drag & drop any file onto the upload area, or click to choose a file.
- 2Click Open.
- 3See the file rendered along with its metadata. Everything is processed on your device — the file is never uploaded.
About MIME Type Detector
MIME Type Detector compares a file's declared MIME type with the type inferred from its magic bytes, so you can tell the real file type — even if the extension is wrong.
Reads the first few bytes natively in the browser; the file is never uploaded.
FAQ
Is my file/data uploaded to a server?
No. Everything is opened and rendered in your browser with JavaScript (the File API). Nothing is uploaded, logged, or stored on our servers — safe for sensitive files.
How is this viewer different from an extractor or parser?
A viewer shows the content as-is (read-only) — you see the file/text the way it is. An extractor pulls raw data (e.g. text from a PDF) into a string, while a parser breaks input into its component structure. A viewer focuses on "see", not "transform" or "pull".