Longtime FF user who's switched to Pale Moon and is now trying to switch from Win to linux. I have heavily customised FF ESR and Pale Moon with add-ons but two essentials are not compatilble with PM on linux: Roomy Bookmarks Toolbar and Hide Caption Titlebar Plus. Multirow Bookmarks Toolbar has allowed me to hide the names on the Bookmarks bar and show icons only, but I'm looking for an add-on to let me get rid of the titlebar for more space below by putting the tabs on that bar in between the menu icon on the left and the mimimize/close buttons on the right, as I can with PM and FF on Win.

Anyone have suggestions?

Answering my own question.

Layout Plan has solved this. My tabs are not on the title bar but something I chose has removed the titlebar and put the menu and close buttons on either end of the tab bar. With the bookmarks bar on auto-hide I have much more browser space on our current horizontally compromised 16/9 screens. Now if I could just manage to get Pale Moon installed in Mint I'd be really happy. I tried a while ago but it failed. Pale Moon is in the Manjaro repository, the reason for this Manjaro KDE install.

please mark [SOLVED] (thread tools at the top).

Layout Plan seemed to work at first, then not, at least on one install. The final answer for me was to look for older versions of my extensions that were compatible with FF before version 24. These were Roomy Bookmarks Toolbar and Hide Caption Titlebar Plus. On the page for the extension, down at the bottom is a link for "version history." Clicking on that expands and produces another link, "See complete version history." That link shows all the old versions and choosing one compatible with FF before version 24 was the answer to compatibility with Pale Moon. No guarantees that this will always be compatible, but for me, for now, it worked.