The Bookmarks Folder is really one data file in the user profile directory. The best thing you can do is to export your bookmarks to a HTML file. Then open that file in a editor to remove what you want.

Open the Bookmarks Manager. Press the Alt or F10 key to bring up the tool bar. Then select Bookmarks. Hot key is <Control>(Mac:<Command>) <Shift> B. Once the window is open, at the top of the page, press the button labeled Import and Backup. Select Export Bookmarks To HTML, and follow the prompts and save it to a HTML file.

You can also consider to keep the folder in Firefox, but move all the bookmarks on the Bookmarks Toolbar to a folder in the Bookmarks Menu folder or the Unsorted folder.

To: FredMcD [#answer-716496]

Thanks for your reaction. Before I do what you suggest, I'd like to know more details to avoid irreversible damage.

First clarification: 1. The critical folder from Bookmarks Toolbar contains some 20K Bookmarks, which makes Firefox work hard and lowers its responsiveness. 2. On Bookmarks Toolbar along with this folder there are also additional 20 frequently used Bookmarks, which I need to keep. 3. In addition, I have some 150+ important Bookmarks on my Bookmark menu, which I want to keep either. Obviously, the suggested operation shouldn't harm any of my Bookmarks and all of them with exception of the described folder should remain in place.

If I understood properly, you suggest to: a. Export all my Bookmarks to HTML, meaning that all Bookmarks from my Bookmarks Toolbar, as well as from the Bookmarks menu will be removed from Firefox to an HTML file b. Move this critical folder with 20K bookmarks somewhere, as another HTML file c. Import the HTML file without the 20K Bookmarks folder to Firefox. Please correct me if I'm wrong.

To: cor-el [#answer-716513]

Yes, as a matter of fact I've already done it. The reason behind the temporary removal of the folder containing some 20K Bookmarks, not so essential at this moment, is to make Firefox to be more responsive and I'm afraid that relocation of the critical folder to the Bookmarks menu folder will not help in this respect.

AnrewMac said

a. Export all my Bookmarks to HTML, meaning that all Bookmarks from my Bookmarks Toolbar, as well as from the Bookmarks menu will be removed from Firefox to an HTML file

Not correct. This will create a Copy of the current bookmarks folder.

c. Import the HTML file without the 20K Bookmarks folder to Firefox.

No. What you do is this, open the HTML file. Look for the entries you want. Now Copy those entries. Next create a new HTML file, and Paste these entries into the new file. Now you have a backup of the current bookmarks, and a file having only the special bookmarks.

Now you can "clean out" the Bookmarks Manager, and still have all of them. If you ever want to go to one of the special bookmarks, open the HTML file with a Word program, or Firefox.

Thanks for your clarification. There is one extra problem, however. You said:

What you do is this, open the HTML file. Look for the entries you want. Now Copy those entries. Next create a new HTML file, and Paste these entries into the new file. Now you have a backup of the current bookmarks, and a file having only the special bookmarks.

1. If I open new blank MS Word 97 document and leave it that way or copy&paste my bookmarks into it, and then choose Save as HTML then I get the following warning: "Word cannot start the converter HTML32." 2. If I try to use HTML template for start, then standard blank Word 97 document opens giving the same as in 1. 3. If I open Internet Explorer 11 then I don't have blank page and can't paste my bookmarks. 4. Finally, If I open a new blank document in MS Word 2010, copy & paste my bookmarks into it (with keep source formatting), and save it as Single File Web Page, then MHTML document (*.mht) is produced. Double clicking on it opens Internet Explorer with my bookmarks listed. Other two options on 'save as' are: Web page and Web page filtered, which produce: HTML document (.htm) file and a folder, and HTML document (.htm) file, repectively. I don't know which one of these three options is good for me.

You can make a copy of the bookmarks HTML backup and open that copy. Then you can remove all unneeded bookmarks and only leave the ones you need. You can copy the wanted bookmarks folder to the clipboard and clear out the three main main folders (Bookmarks Toolbar, Bookmarks Menu, Unsorted). Then you can paste the clipboard content in one of those folders and save the file. That would leave you with a bookmarks backup that only has that folder.

cor-el [#answer-718338]

Sounds nice, but your advice below:

You can make a copy of the bookmarks HTML backup and open that copy. Then you can remove all unneeded bookmarks and only leave the ones you need.

is not clear to me.

How can I remove all unneeded bookmarks in HTML? This can be done only with a HTML editor, I believe, as Delete option is inactive in HTML.

Yes, you need to open the copy of the HTML backup in a text editor or HTML editor and make the required changes and remove unwanted bookmarks to get a backup with only the wanted bookmarks.