Tabshift: Custom New Tab URL by Jai Pandya

Tabshift opens any URL as your new tab: your inbox, a team wiki, a dashboard or localhost:3000. It redirects before the page paints and leaves the cursor in the address bar, so you can type straight away.

It's built to feel like nothing at all:

• No flash. Tabshift sends you on in your theme's colours, so dark mode stays dark.
• No loops. Back from your page never throws you forward again.
• The cursor stays in the address bar, where Firefox puts it.

Keep more than one page:

• Shift between them from the toolbar in one click, by right-clicking the Tabshift button, or with a keyboard shortcut.
• Shuffle: a different page from your list each time you open a tab yourself, not when a link opens one.
• Use this page: one click makes the site you're on your new tab.
• A blank page is always there too.

It understands the addresses you actually type. notion.so gets https, and localhost:3000 and 192.168.1.1 get http. When an address can't work, like an about: or data: address, Tabshift tells you why in one sentence. Firefox doesn't let add-ons open files from your computer, so a file can't be your new tab here.

Private by design:

• No permission warnings when you add it, and no access to the sites you visit.
• No network, no account, no analytics.
• Your pages sync with Firefox Sync if you use it, and nothing is sent anywhere else.

Private windows keep Firefox's own new tab until you allow Tabshift to run in them.