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Why don't bookmarked sites open in a full window?

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When I go to a bookmarked site...sometimes it will open in a full tab...but some sites only open in a small section on the left side of the currently open tab...it's only like an inch wide. I'd like new pages I visit to open in a full sized tab.

When I go to a bookmarked site...sometimes it will open in a full tab...but some sites only open in a small section on the left side of the currently open tab...it's only like an inch wide. I'd like new pages I visit to open in a full sized tab.

Chosen solution

With the bookmarks that open in the Sidebar (small section of the browser on the left), right-click those bookmarks and select Properties. Un-check Load this bookmark in the sidebar, them click Save.

That box becomes check-marked when the user uses a button on a web page for "Bookmark this Page". Best to use the Bookmark this Page feature within Firefox, rather than buttons on web pages.

How do I create a bookmark
You can also use {Ctrl + D} from the key board.

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Chosen Solution

With the bookmarks that open in the Sidebar (small section of the browser on the left), right-click those bookmarks and select Properties. Un-check Load this bookmark in the sidebar, them click Save.

That box becomes check-marked when the user uses a button on a web page for "Bookmark this Page". Best to use the Bookmark this Page feature within Firefox, rather than buttons on web pages.

How do I create a bookmark
You can also use {Ctrl + D} from the key board.