• I wasn't able to find it too in Download folder, it was in Desktop. May 26, 2015 at 6:01

The site has nothing to do with this. The file has been downloaded to a (default) pre-set location, or wherever you have told Firefox to store it in a prompt.

If this doesn't work:

You can find your pre-set download location here: Firefox Button > Options (pops up) > General Tab.

In this tab, there's a section "Downloads" where two options are displayed: (1) Save files in (2) Always ask where to store files.

In case (1), check this folder. In case (2), you have chosen a location yourself. You can use the Windows Explorer search function (if you really don't have a clue) for the file name, if you know it.

When you choose to Open a file rather than Save it, firefox saves the file in your temp directory. On Windows, you can press +R and then type %temp% to open your temp directory.

• +1 looking at his question, I figured an answer should be simple. I actually knew and would've known it was the down arrow but wouldn't have known looking at other answers. +1 'cos your picture is worth many words. Nov 13, 2013 at 3:10

If you use the mega.co.nz Firefox extension on Windows, it downloads the files to %USERPROFILE%\Desktop\

If you are using most recent versions of Firefox, now MEGA downloaded files are treated as a "blob resource" (to purposely avoid writing files using HTML5, something Chrome did when MEGA launched). Not sure if History might remember the "blob resource" address. However and from personal experience it either is a cached file or a link to an actual "process" that downloads the file as it should. Exiting Firefox does clear the "blob resource" link.

On older versions, probably a cached file, but that would also be deleted upon exit.

Mozilla & MEGA

I found all the cached files I've downloaded in C:\Users\...\AppData\Roaming\Mozilla\.

• the question is about downloaded file location,not the cache of the firefox Sep 20, 2013 at 9:31

The default location would be:

C:\Users\<YourAccountName>\AppData\Roaming\Mozilla\Firefox\Profiles\xxxxx.default\indexedDB\https+++mega.co.nz


Substitute the appropriate value for the xxxxx part.

Mega.co.nz downloads the files in a temporary folder named idb, This folder is located here: C:\Documents and Settings\user\Application Data\Mozilla\Firefox\Profiles\frxzit8g.default\indexedDB\https+++mega.co.nz\idb

In this temporary folder the download creates a lot of small files. 1 MB size per file.

No idea, how to combine these all files.

To combine the files, open a command prompt window then navigate to the folder where the files are located then use the command "copy /b file1 + file2 + ... + fileN combinedfile.ext" without quotes. It works for me.

Mega downloads the files in a temporary folder named idb, This folder is located here:

C:\Documents and Settings\user\Application Data\Mozilla\Firefox\Profiles\frxzit8g.default\indexedDB\https+++mega.co.nz\idb


\Users\nishant\AppData\Roaming\Mozilla\Firefox\Profiles\[something].default\indexedDB\https+++mega.co.nz\idb