How to open all Safari history at once?

Solution 1:

Try to use Command + Shift + T and you will reopen the last closed browser tab or window.

Or choose an option labeled Reopen All Windows from Last Session in Safari’s History menu (at the top).

Outside of that, there is no direct way to open multiple tabs/sessions like that on Safari.

Solution 2:

1. Go to the Safari menu "History" and click on "Show all history"
2. Find the lines you're interested in and highlight them
3. Drag these lines into the tab bar and they will all open in separate tabs

Solution 3:

1. Create new folder anywhere (in Desktop for example)
2. Go to history and command-click on the pages you want to open to select them
3. Drag them to the new folder (created in step 1 )
4. Cmd-A to select all in folder.
5. Cmd-O to open them all.

I hope this solve your problem.