Does the file extension hold significance in relation to a MIME type? Are there other implications for a server?

How crucial is the file extension?

As an example, I have a CSS style sheet named "hi.js" and then use it while linking with its MIME type as text/CSS. Would this be effective? Is it considered against any rules?

Edit: It was just a harmless query, no intentions of actually carrying it out.

Answer №1

When it comes to HTTP, the significance of file extensions is minimal. The crucial factor is the content type sent by the server, rather than what you manually specify using the type attribute.

Nevertheless, utilizing incorrect file extensions will:

  • Complicate server configuration (as you must instruct it to send a different content-type for that particular file)
  • Result in frustration for anyone tasked with maintaining your code (including yourself down the line)

Answer №2

It's worth noting that the file extension doesn't hold much significance in the realm of HTTP.

In the world of HTTP, there is no direct correlation between "files" and requests/responses; it's all about content and headers. As long as the response header specifies the type of content being sent back, the specific URL or file extension used for the request becomes irrelevant.

For example, the URL could take many forms:

  • /style.css
  • /script.js
  • /data.txt
  • /api/endpoint?query=example
  • /random/resource
  • and so on...

Ultimately, what matters most is the actual content and metadata attached to the response, not the name or extension of the requested resource.

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