A media type (also referred to as a content type or MIME type) tells what kind of app is needed to process the content of a file.
Every PageSeeder document or configuration file has a media type.
To help you identify the media type quickly, documents titles or file names are almost always preceded by a media icon in the user interface.
A media type has two main parts separated by a '/'. The first part defines the general category such as audio content, executable program, image, text message, video stream, etc. The second part provides a specific subtype defined by the file format.
There is an official register of media types maintained by IANA.
PageSeeder also defines a vendor-specific media type for PSML:
application/vnd.pageseeder.psml+xml
PageSeeder doesn’t inspect the content of every file. In most situations, it relies on the file extension to determine what the media type is. For that reason, it is important that files uploaded into PageSeeder use file extensions consistently.
Prefer using lower case extension “.png” to the upper case version. Although, it might work in some circumstances, avoid using a mixed case “.Jpeg”.
You can access PageSeeder media type mapping to file extensions in the server properties page. There is no need to change this mapping – it is provided for your information only.
Contact support, if you require an IANA registered media type to be mapped to a file extension.
The PageSeeder user manual
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