How to automatically open csv files in Excel on imac

Question

I am migrating back from Google Chrome to firefox and would like to have the browser automatically open csv files to Excel on my mac desktop. The step to have them saved in the download folder and then go in an open it in Excel adds an unnecessary action. In the earlier versions of Firefox on my windows machine this worked as desired. Any help will be appreciated.

Answer 1

The Yahoo Finance server sends the file with the ''Content-Type: application/octet-stream'' header. This is a generic MIME type that doesn't describe the type of file. Therefore you will always see a download prompt, regardless of your download preferences.
* [https://developer.mozilla.org/docs/Web/Security/Securing_your_site/Configuring_server_MIME_types What are MIME types? | MDN]
To get around this issue, install the Force Content-Type add-on.
* https://addons.mozilla.org/firefox/addon/force-content-type/
In the Add-ons Manager, Extensions category, click the Options button next to Force Content-Type. Create two rules as follows:
* URL: '''(.csv)$''' Old Content-Type: '''text/plain''' New Content-Type: '''text/csv'''
* URL: '''(.csv)$''' Old Content-Type: '''application/octet-stream''' New Content-Type: '''text/csv'''
You should then be able to select what you want to do with CSV files (i.e. open them directly rather than save), and check the "Do this automatically…" option.
You're welcome.