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Comprobador de tipo MIME
Upload a file to check its MIME type and compare it with the extension and file header.
Check the MIME type reported for a file and compare it with the extension and file header.
MIME Type Checker
Arrastra y suelta tu archivo aquí.
Los resultados aparecerán aquí
Choose a file to see the result.
Siguiente paso sugerido
These tools are the most likely next step after the page you are on now.
Qué revisa esta herramienta
Use this page when a file looks mislabeled, refuses to upload, or behaves differently from what its name suggests.
- The checker reads the MIME type exposed by the browser, compares it with the filename extension, and pairs the result with a simple signature check when possible.
- That helps you tell the difference between what a file is called and what it appears to be.
For many common files, the file stays on your device while the tool runs. No account is required.
Cómo usarla
- 1Upload the file
- 2Compare the reported MIME type with the extension and signature
- 3Use a related tool if you need a deeper file check
Qué muestran los resultados
- A mismatch between extension and MIME type can signal a renamed file or a broken export.
- Unknown MIME means the browser could not classify the file confidently.
Key terms
Preguntas frecuentes
¿Cuál es la diferencia entre un tipo MIME y una firma de archivo?
A MIME type is a content classification label, while a file signature is a byte-level header pattern that can help identify a format.
¿Qué formatos de archivo acepta esta herramienta?
Comprobador de tipo MIME funciona con: Most common file types.
¿Para qué sirve esta herramienta?
Úsala para: Investigate a mislabeled file, Confirm a content type before upload y Understand why an application may reject a file.