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I am using dolphin as my file manager and when I download something via firefox, I right click the download dialog and choose "open folder", I always get nautilus.

Why doesn't firefox open the folder with dolphin? Thanks

Note: I tried adding the tag "dolphin" but because of my low rep I can't create new tags :(

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I have added the dolphin tag for you. – Richard Holloway Aug 17 '10 at 16:15
@Richard Thanks :) – AntonioCS Aug 17 '10 at 21:41
up vote 3 down vote accepted

To get Dolphin in the file-picker dialog, install the package "kmozillahelper" from the standard repositories.

sudo apt-get install kmozillahelper

Set the filepicker-variable in in Firefox by visiting the URL about:config.

More information here

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This worked :) Thanks!!! – AntonioCS Aug 18 '10 at 9:47
The More Information link is dead. – alpha1 Apr 27 '15 at 16:47
sudo apt-get install kmozillahelper

is not more available.

How to use dolphin to open folder in firefox

When I installed KDE and Firefox this feature actually worked – I downloaded a file, clicked on “open containing folder”, and Dolphin would happily pop with the respective folder open.

However, when I installed a few more apps, Firefox started calling Gwent or other app to “open the folder”.


In the file /usr/share/applications/mimeinfo.cache, find inode/directory and make kde4-dolphin.desktop on first such as:

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After installing Firefox in Kubuntu there was not default file manager associated with the browser.

  1. Pressing the grey/green "Display the progress of ongoing downloads" arrow, just next to the search engine box in the head (right hand/top) of the browser (my Firefox version is 25.0.1), "Show All Downloads" menu was displayed.

  2. When I pressed it "Library" window opened and I pressed on "Open Containing Folder" button.

  3. Then "Launch Application" dialogue pops up with "Choose and Application" suggestion.

  4. Pressing "Choose..." I selected /usr/bin/ folder and chose dolphin. Dolphin can be selected as default application using the check box.

By the way - trying to install kmozillahelper in Kubuntu I got "E: Unable to locate package kmozillahelper". That's right - it's not available any more.

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As user162413 stated, kmozillahelper is no longer avaliable. His solution however did not work for me.

Instead, one from dragly did the trick:

Open up /usr/share/applications/defaults.list and change line inode/directory=nautilus.desktop to inode/directory=kde4/dolphin.desktop. Works without need to restart Firefox.

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Didn't work for me either. Is there another possible solution? – Ben Aug 18 '15 at 19:29
Not working as well. Can you please post the version of OS and application? – Tik0 Oct 6 '15 at 11:44

For those still having this issue, I found a slightly easier way:

  1. Open the Default Applications control module (KDE menu -> search for Default)
  2. Select the File Manager list
  3. Ensure that Dolphin is selected
    • if it is already selected, reselect by clicking on another option then back to Dolphin
  4. click Apply
  5. test

This worked for me. YMMV, but this would be a much better solution rather than editing the MIME configuration manually.

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