I use Fluid to make webapps that I want open all the time function more like independant native apps, so they're not lost in a tab in my browser.

And Fluid allows for tabbed browsing, so I can choose to open another tab for a link, say, if I don't want to open it in my main (non-fluid) browser:

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But I can't find any way to save multiple tabs as the Fluid App's home page, like you can on any web browser. I want the app to automaticially open two tabs, so one fluid app can be for chat, but have a tab for two different chat rooms, one for Trello, but with tabs for a couple of boards, etc.

Am I missing some way to do this?

2 Answers 2


Developer of Fluid here. Although there's no explicit support for this, it can sorta be accomplished by:

  1. Launch your Fluid App and set up the windows and tabs you would like to appear on launch.

  2. Ensure that the following preference is enabled:

    Preferences > Behavior > On startup restore windows and tabs from last time

  3. Quit and relaunch your Fluid App, and you'll see the same windows and tabs are open.

  • you'll just need to remember to set the tabs up like you want each time you quit.
    – dwightk
    Jan 1, 2015 at 0:32
  • 2
    Todd, that's a great workaround for my needs. And not much makes me love a product more than when I see its devs actively responding to questions on our sites - thanks a ton.
    – Jaydles
    Jan 2, 2015 at 15:18
  • My new Fluid app defaulted to a whitelist, and would open the new URL I wanted in an external browser until I added it to this whitelist.
    – Dathan
    Aug 11, 2015 at 17:09
  • 4
    The Behavior option seems to be missing. Is this no longer possible?
    – Tylerc230
    Mar 22, 2019 at 0:19

So obviously a bit late here, but I found a workaround for those that really want this. You will need access to a HTTP server (it may work with file:// urls, but I have not checked).

What you will do is create a HTML file that spawns tabs with the windows you want to launch, then closes itself.


  • Add your domain to the whitelist tab, as well as the domains of the sites you want to open.
  • In the Security tab, uncheck "Block pop-ups"
  • Add a file on your server with the following content. In my case, I used it to open multiple Slack windows (yes I know they support multiple accounts, but this was better for me):

    <script type="text/javascript">
        window.open('https://a.slack.com', 'a');
        window.open('https://b.slack.com', 'b');
    <p>Loading Slack...</p>
  • Link to that file as your startup page.

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