How did you change the file?

If you just renamed it, then renaming it back should work.

If you saved the bookmarks in HTML format, you can import that format.

1. In the Bookmarks menu select "Show All Bookmarks" to open the bookmarks library
2. In the bookmarks library select "Import & Backup", then "Import HTML" and follow the prompts to import from an HTML file

I renamed it. I tried renaming it to bookmarks.json but it wouldn't let me change it. Keeps going back to html. I tried importing from html and I got no result. Nothing changed at all.

Make sure that the backup file with the bookmarks has the correct file extension: .html for a HTML backup and .json for a JSON backup.
You can check that via the right-click context menu of that file and open the Properties.
If you are not sure about the file type then you can open the file in Firefox via "File > Open File"
A JSON backup will show as one long text line without line breaks and a HTML backup as a web page with clickable links.

• A JSON backup starts with: {"title":"","id":1,"dateAdded":
• An HTML backup starts with: <!DOCTYPE NETSCAPE-Bookmark-file-1>

You may need to add quotes ("") around the name to rename the file to the correct file extension.

It's a JSON file. I couldn't just change the name back. So I copied everything into note tab light. Changed it to a json file, and when I tried to restore it said it couldn't process the file.

Notepad may have added a hidden.txt file extension. You should see that if you open the Properties of that file via the right-click context menu.

Try to rename the file and add quotes around the name like I wrote above:

• "bookmarks.json"

Like I said above I already tried renaming it. With and without quotation marks. It did no good. I'm just going through the code now and copying my bookmarks over the hard way.

Just figured out by accident how to change the .html file back to a .json file. Wherever the file is on your computer, open a CMD or DOS window up. If the file name is something like "bookmarks-2011-07-15.json.html" you can rename it using CMD, but it wont work in windows. Use these commands without the quotation marks.

"rename *.json.html *.json"

Their is one space between the l and *, "rename *.json.html(space)*.json"

That should effectively get rid of the .html at the end of the file. You should also see the file has the same icon it once had before having .html put on the end of it and it taking the icon of whatever web browser you are using. In Windows, not CMD, you might have to right click on the file and rename it again to get rid of the .json if it is showing, doing so wont affect the file anyway negatively. After it's renamed you can close the CMD window.

Now you should be able to import your bookmarks using the Firefox's "Imports and Backup > Restore > Choose File" menu and would you look at that, theirs your bookmarks.

Hope this helps even though it's now two plus months since first post.