![]() ![]() You can save a backup of the list (with clickable links) as a "Plan B" in case the file won't restore. To identify the best file to try, you can use this tool on my website: drag and drop a file onto the box and generate a list of the windows and tabs in that file. When Firefox is closed and shuts down normally, your session is saved at the main level of the profile folder under the name sessionstore.jsonlz4 and the recovery.jsonlz4/recovery.baklz4 are removed from the sessionstore-backups folder.Īnd now to the main issue: how to restore the file you want to restore. It now compresses the files, which is why you see jsonlz4 and baklz4 file extensions. Hold on, first step, copy all of the contents of sessionstore-backups to a safe location so Firefox doesn't delete or cycle them out. So, what are these recovery files, how do I use them, and why were they not there when ff was not running? After restarting and finding I could not restore, I terminated ff by clicking on the red X then foundĭirectory of C:\Users\wayne\AppData\Roaming\Mozilla\Firefox\Profiles\bdndcxx3.d Even if it was, the restore files are not present. When doing so, it did a upgrade then when start it goes to every time, so session restore is not available. But as it is, I should have previous.js and pevious.bak but I don’t. ![]() This would be something to fix, that is to be able to restore the previous session at any time. Failures would occur if a tab is opened before I can attempt to restore the session which sometimes happens without my doing anything, thus making session restore unavailable. Previously I would copy previous.js from sessionstore-backups while firefox is running as protection against session restore failures. into_iter ().Firefox always chokes it’s self if I let it run long enough, and the session restore is unusable. ×!") // uncomment this to show all URLs.Let's look at the file contents: $ hexyl recovery.jsonlz4 | head -n7 This means that the uncompressed length is likely to be easily accessible. Recovery.jsonlz4: Mozilla lz4 compressed data, originally 145030214 bytesįile recognizes thousands of file formats, but it's relatively shallow. The jsonlz4 extension is a good hint, but a good first step is to run the file utility, which tries to guess the type of a file: $ file recovery.jsonlz4 Looking at the last modified dates, it appears that the most recent one is called recovery.jsonlz4. I don't know the specifics, but these are backup versions, more or less recent, some of them saved during browser upgrades. In there, there should be a directory called sessionstore-backups, with a couple of files: $ ls sessionstore-backups Of course, the better way is to open about:support and copy the path from there. The default profile is marked as such in the two INI files. Under ~/.mozilla/firefox on Linux, or %APPDATA%\Mozilla\Firefox on Windows, you should have a profiles.ini, an installs.ini and one or more randomly-named subdirectories. I've previously used lz4json to decode them, but it's a good prompt for a post, and I'd rather not keep an extra AUR package anyway. Unfortunately, last time I checked, there wasn't much information available about the session restore format. If you're using Firefox (and you should), you might have wanted to read its session restore files, perhaps to recover some lost tabs, re-import an old session after a refresh, or even track your tab hoarding habit. ![]()
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