Picto thématique

Rule n° 202 - The server indicates each resource’s MIME type.

Indicating the MIME type of each resource allows the user's browser to retrieve correctly identified contents, and to close the door to the sending of certain dangerous contents.

#Security #Development


  • Reduce the risk of downloading dangerous hidden content.


Configure the server to address for each resource (text, image, script, etc.) the ContentType header filled with the appropriate MIME type, for example:
  • text/html;
  • application/pdf.


Using an HTTP headers inspection tool, check that the ContentType has the value corresponding to the type of resource.

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The objective of these rules and the Opquast community mission is ‘making the web better’ for your customers and for everyone! Opquast rules cover the key major areas of risk that can negatively affect website users such as privacy, ecodesign, accessibility and security.

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