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Vérificateur de type 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.

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MIME Type Checker

Glissez-déposez votre fichier ici.

Les résultats apparaîtront ici

Choose a file to see the result.

Étape suivante suggérée

These tools are the most likely next step after the page you are on now.

Ouvrir l’outil

Vérificateur de signature de fichier

Continue with a focused tool for the next part of the job.

Check metadata

Voir les métadonnées

Open the full metadata view and inspect the file in more detail.

Ce que vérifie cet outil

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.

Comment l’utiliser

  1. 1Upload the file
  2. 2Compare the reported MIME type with the extension and signature
  3. 3Use a related tool if you need a deeper file check

Ce que montrent les résultats

  • 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

MIME type

A MIME type is a label that describes the kind of content in a file, such as image/jpeg or application/pdf.

File signature

A file signature is a recognizable byte pattern near the start of a file.

Questions fréquentes

Quelle est la différence entre un type MIME et une signature de fichier ?

A MIME type is a content classification label, while a file signature is a byte-level header pattern that can help identify a format.

Quels formats de fichier cet outil accepte-t-il ?

Vérificateur de type MIME fonctionne avec : Most common file types.

À quoi sert cet outil ?

À utiliser pour : Investigate a mislabeled file, Confirm a content type before upload et Understand why an application may reject a file.

Articles associés

Qu’est-ce qu’un type MIME ?

Learn what a MIME type is, where it appears, and why it matters when a file is uploaded, downloaded, or previewed online.

Qu’est-ce qu’une signature de fichier ?

Learn what a file signature is, how it differs from an extension, and why it helps confirm the real format of a file.

Vérificateur de type MIME | FileMetaHub