Your browser,at command.

Lumno is an open-source command bar and new tab for your browser.One shortcut to search tabs, bookmarks, history, and the sites you love.

Install Lumno — it’s free

GitHub

Call it up from any page.

Your tabs, bookmarks, history, and AI, all in one search box.

Unified search

Too many tabs? Just search.

The results you pick most rise to the top.

Site search

Search inside sites, one Tab away.

Type a shortcut and press Tab to search any of 46 sites.

Ask AI

Your question, straight to AI.

Switch between ChatGPT, Gemini, and Perplexity. Hit Return to ask.

Select text. Ask AI.

Shows up only when you need it. One click, and AI answers in a background tab.

Optics, briefly

A sunbeam’s short trip

Why is the sky blue? Sunlight scatters off air molecules, and shorter wavelengths scatter the most — an effect called Rayleigh scattering. A Japanese textbook puts it this way: 青い光は波長が短いため、赤い光よりも強く散乱されます。

Opening in the background…

New tab

Make your new tab truly yours.

Painted wallpapers, film-like filters, and your bookmarks one click away. Minimal or full, your call.

Lumno new tab with a wallpaper, search box, and site cards

Wallpapers that never get old

A new one every day, a night version after dark, and eight ways to play with the one you love.

Rebuilt from pixel tiles

Something new to look at, every day

Classic paintings, Bing's photo of the day, and landscape shots, refreshed daily.

Easy on the eyes at midnight

Follows your system, with a night wallpaper to match.

Full-featured, or as minimal as you like

Shortcuts, bookmarks, and a clock, all on hand. When it’s time to focus, one command leaves just the search box.

Hundreds of bookmarks, zero digging
Three layouts keep hundreds of bookmarks within reach.
Your go-to sites, one click away
Daily sites sit under the search box and magnify like the Dock.
The time, right where you look
A clock sits right above the search box, seconds optional.
Just the search box, when you need to focus
Type /zen to tuck everything else away. Type it again to restore.

Small things that add up.

Each one has its own switch. Keep only what you use.

Web Clip
Clip any part of a page into a floating window that stays live.
Auto Picture-in-Picture
Switch tabs and the video keeps playing in a floating window.
Progress cards
Pin a show or novel to your new tab. It tracks your latest episode or chapter.
WebDAV sync
Sync settings, icons, and wallpapers across browsers.
Pinned tab recovery
Pinned web tabs come back automatically after the browser restarts.
Your language
English, 日本語, 简体中文, and 繁體中文—or follow your browser.

“The developer has fantastic taste. A beautifully crafted product that covers so many of my needs and feels great to use. Looking forward to more great designs and products!”

殷帅

“Excellent. Has the developer made anything else? I’d love to try it too.”

王二

“Really easy to use. Beautiful, practical, and does everything I need.”

郭童

“Gorgeous and genuinely useful!”

echo

“A beautiful, easy start page, and the features keep coming!”

weiyi Josscii

“Beautiful, with silky-smooth micro-animations. A real pleasure to use.”

Yashon张一瞬呀（Yashon张一瞬呀）

Private and secure, by design.

Works in Chrome, Edge, Firefox, and most Chromium-based browsers

View source on GitHub

Collects no usage data
Data Lumno collects
Browsing historyNot collected
Bookmarks & tabsNot collected
SearchesNot collected
Usage statsNot collected
LocationNot collected

Open source under GPL-3.0

Several ways to sync settings

Questions, answered.

Ask on GitHub

What is the default shortcut? Can I change it?

⌘⇧K on Mac and Ctrl + Shift + K on Windows by default. You can change it at chrome://extensions/shortcuts. In Firefox, it’s ⌃⇧K on Mac and Alt + K on Windows and Linux; change it from the gear menu in about:addons under Manage Extension Shortcuts.

Which browsers are supported?

Chromium browsers that install Chrome extensions, including Chrome, Edge, Dia, Brave, and Vivaldi, plus Firefox 140 or later and Firefox-based browsers like Zen. Safari isn’t supported yet. In Dia, you get the command bar but not Lumno’s new tab.

How is the Firefox version different?

The main features match the Chrome version. Install it from Firefox Add-ons, including in Firefox-based browsers like Zen and LibreWolf. Firefox’s limits mean Web Clip and Auto Picture-in-Picture aren’t available, and the command bar can’t open on about: pages, the add-ons site, or local files.

I’m moving from Arc. Will this feel familiar?

That’s the idea. Lumno borrows from Arc’s interactions (it isn’t affiliated with Arc), so in Dia, Chrome, or Edge you can still call up the command bar anytime, search everything in one place, and switch fast. Set the shortcut to ⌘T for the Arc feel you know.

Can I keep my current new tab and just use the command bar?

Yes. Leave Lumno on, then reinstall your other new tab extension so it takes the new tab back. The command bar isn’t affected.

Why does the address bar show an extension URL on a new tab?

That comes from “Automatically focus input”: to put your cursor straight into Lumno’s search box, the address bar shows the extension URL. Turn it off in the new tab’s appearance settings and the address bar stays empty.

Why doesn’t the command bar match my system’s light or dark mode?

In Follow system mode, the command bar also takes cues from the current page’s colors. To follow only your system, turn off “Adapt theme colors to each webpage” under Settings › Appearance.

Why doesn’t the command bar open on some pages?

Browsers block extensions on restricted pages like chrome:// settings and the Web Store, so Lumno opens search in a new tab. For local PDF and HTML files, turn on “Allow access to file URLs” on the extension’s details page.

Can I sync my settings across devices?

Yes. Settings sync through your browser account by default. Turn on WebDAV (Nutstore or your own server) to also sync icons and wallpapers between different browsers.

Does Lumno upload my browsing data?

No. Tabs, bookmarks, and history are searched locally. Only when you run a web or AI search is what you type sent to the search engine or AI site you picked.

Is Lumno free?

Completely, and it’s open source under GPL-3.0 on GitHub.