Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Input Type from a CSV File is Recognized as Ms excel file

  • 3 replies
  • 5 have this problem
  • 1 view
  • Last reply by Grizzly

more options

In the current Version of Firefox the input field is set to the wrong filetype if select an csv file.

Open with Chrome and Firefox. Chrome set the file type to text/csv Firefox to "application/vnd.ms-excel"

Working example open the consoel to see the output: https://codepen.io/GrizzlyStu/pen/YzjZjez

In the current Version of Firefox the input field is set to the wrong filetype if select an csv file. Open with Chrome and Firefox. Chrome set the file type to text/csv Firefox to "application/vnd.ms-excel" Working example open the consoel to see the output: https://codepen.io/GrizzlyStu/pen/YzjZjez

Chosen solution

You can inspect the MIME database key with the registry editor (regedit.exe) and do a search for that MIME type (file extension) via Ctrl+F. Be cautious with editing the registry as there is NO UNDO possible: all changes are applied immediately. You can export key(s) in the registry editor before making changes. You can check specific file extension keys (e.g. .jpg) in the registry with the registry editor.

  • HKEY_CLASSES_ROOT\.xxx

You can check possibly linked MIME types in the MIME Database registry key.

  • HKEY_CLASSES_ROOT\MIME\Database\Content Type\
Read this answer in context 👍 1

All Replies (3)

more options

This Issue is only on Windows PCs. On Linux the file type is set correctly to "text/csv"

more options

Chosen Solution

You can inspect the MIME database key with the registry editor (regedit.exe) and do a search for that MIME type (file extension) via Ctrl+F. Be cautious with editing the registry as there is NO UNDO possible: all changes are applied immediately. You can export key(s) in the registry editor before making changes. You can check specific file extension keys (e.g. .jpg) in the registry with the registry editor.

  • HKEY_CLASSES_ROOT\.xxx

You can check possibly linked MIME types in the MIME Database registry key.

  • HKEY_CLASSES_ROOT\MIME\Database\Content Type\
more options

Ok thanks for that info. Could it also happen in Mac or Linux Version of Firefox?

Good to know that firefox uses the content type definitin by windows.