You can set whatever homepage you want including a blank page.

https://support.mozilla.org/en-US/kb/how-to-set-the-home-page

Hi lsk123, Firefox still can do that, but it's not available on the Options page for some reason. Here's how you modify it "under the hood":

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste startup and pause while the list is filtered

(3) Double-click the browser.startup.page preference to display a dialog where you can enter the desired value:

• 0 => blank page
• 1 => your home page(s) {default}
• 2 => the last page viewed in Firefox
• 3 => previous session windows and tabs

Then click OK to save the change.

Added screenshot comparing Firefox 52 and Firefox 62

Hi lsk123, did the above reply (https://support.mozilla.org/questions/1236645#answer-1162723) resolve the issue for you? Since you are posting here today, please update us! Thanks.

See also this pref on the about:config page.

• browser.startup.blankWindow