Use cases

Here are some common ways people use Lumno, each with the steps to try it yourself.

When you have dozens of tabs open

With many tabs open, the titles get squeezed and it's hard to find the one you want. In this case, search only your open tabs:

1. Press ⌘Ctrl⇧ShiftK to open the command bar.
2. While the search box is empty, press Tab once. "Search open tabs" appears on the left.
3. Type a few letters from the page title, such as "layout", select the page you want and press ↩Enter to switch to it.

Open tabs also appear in a normal search, marked "Opened". Pressing ↩Enter switches to the tab instead of opening a duplicate. To move between the last two or three pages, ⌥AltQ is even faster.

If your tabs are slowing down your computer, you can also use Chrome's built-in Memory Saver, or collect tabs into a list with OneTab.

See Search tabs, bookmarks and history and Switch between recent tabs.

When you've moved from Arc

Since Arc stopped adding new features, many people have moved to Dia, Chrome or Edge. Lumno is inspired by Arc's command bar, recent tab switching, pinned tab restore and automatic picture-in-picture. After you install Lumno, follow these steps to set up the command bar:

1. Open chrome://extensions/shortcuts in the address bar.
2. Find Lumno and set "Open command bar" to ⌘CtrlT.
3. Press ⌘CtrlT to open the command bar, and ⌥AltQ to switch between recent tabs, like ⌃CtrlTab in Arc.

See Moving from Arc.

When you work with docs and GitHub

Type a site's shortcut and press Tab to skip the home page and search the site directly. For example, type gh, press Tab, type command palette and press ↩Enter to open GitHub's search results. Other common shortcuts include mdn, npm and sf (Stack Overflow).

• Type an address such as chrome://extensions to open it directly.
• Add your company's internal docs or issue tracker as a custom search in Lumno's settings, with a shortcut of your choice. See Add a custom search.

When you research and write

You may remember reading an article but not whether you bookmarked it or only visited it. Type a keyword in the command bar to search your bookmarks and history together. The label next to each result shows where it comes from, and bookmarks also show their folder.

When a passage is hard to follow, use selection quick actions: select the text, and a Lumno button appears next to it. Click it to choose an action such as Answer, Explain or Research, and Lumno opens the AI's answer in a new tab. Lumno first checks whether the text is likely to need help, so the button doesn't appear every time you select something. This feature is off by default; turn it on under Labs in Lumno's settings. See Selection quick actions.

When you ask AI first

Type an AI's shortcut, such as gpt (ChatGPT), gm (Gemini) or pplx (Perplexity), and press Tab. Then write your question and press ↩Enter. Lumno opens that AI's web app and sends the question for you, so you don't need to open the site and paste it yourself.

See Site search and asking AI.

When you want a calm new tab

Lumno's new tab can show only what you need:

• Wallpaper: choose a painting you like, or get a new Bing photo every day.
• Clock: show the time above the search box.
• Zen mode: when you need to focus, type /zen in the new tab's search box to keep only the search box and wallpaper.

See Change the wallpaper and Clock and Zen mode.

When you follow a show or a serial

When you watch a show or read a serialized novel, Lumno can remember which episode or chapter you're on, right on your new tab:

1. Open the episode or chapter you're on. It then appears among the site cards at the bottom of the new tab. If you don't see it, click "···" at the top right of the cards and choose "Show Recent".
2. Hover over the card and click the pin icon. When Lumno recognizes an episode or chapter page, it starts tracking your progress automatically, and the card shows a radar icon. If tracking doesn't start, right-click the card and choose "Track progress".
3. When you reach the next episode or chapter of the same title, the card updates automatically. Next time, click the card to continue where you left off.

See Frequent sites and progress cards.