Lumno

Command Bar & New Tab
Open the command bar from any page, search faster, jump to URLs, switch tabs, and upgrade the new tab experience.

简体中文 | English | 日本語

Lumno is a Manifest V3 extension for Chromium browsers. It combines a focused browser command bar with a minimal new tab page, so you can search bookmarks, history, top sites, open tabs, site-search shortcuts, and AI assistants from one place.

Current version: 0.9.55

• Focused command bar: open an overlay on injectable pages to visit URLs, search keywords, switch open tabs, open browser internal pages, and jump into Lumno settings.
• Smart search results: combines bookmarks, history, top sites, browser suggestions, and open tabs, with source filters, first-result priority, selection-based ranking, pinyin matching, and blacklist filtering.
• Site search and AI search: ships with shortcuts for YouTube, Bilibili, GitHub, Google, Bing, Baidu, Zhihu, Douban, Juejin, Taobao, X, Reddit, Wikipedia, and more. AI entries include ChatGPT, Gemini, Doubao, Qianwen, Yuanbao, MiniMax, DeepSeek, and Kimi. Custom templates and aliases are supported.
• Aggregate search: combine 2–10 built-in or custom search sources into one scope and run the same query across multiple tabs. A General setting controls whether results are placed in a tab group named after the query.
• New tab page: includes a search box, recent/most-visited site cards, bookmark grids and cascading folder menus, bookmark paging, pinned/hidden recent sites, feedback links, and adjustable content width.
• Appearance and wallpapers: supports system/light/dark themes, global or new-tab-only theme scope, built-in wallpapers, local wallpaper import, overlay opacity, grain/halftone/dither/ASCII filters, search-box width, and Lumno wordmark visibility.
• Web Clip PiP: on supported HTTPS top-level pages, select part of a page and float it in a Document Picture-in-Picture window for reference and comparison.
• Auto video Picture-in-Picture: when you switch tabs while video is playing, Lumno attempts automatic video PiP on sites such as YouTube, Bilibili, Youku, Tencent Video, Douyin, TikTok, Netflix, Vimeo, Prime Video, Disney+, and Twitch.
• Browser enhancements: restore pinned web tabs after restart, fall back from restricted pages to the new tab page, copy the current page URL, and open extension shortcut/details pages.
• Localization: the extension UI supports Simplified Chinese, Traditional Chinese, English, Japanese, and browser-language mode. This README supports Simplified Chinese, English, and Japanese switching.

Browsers may reserve or limit extension shortcuts. Change them at chrome://extensions/shortcuts, edge://extensions/shortcuts, or the equivalent shortcuts page in your browser.

Install from the Chrome Web Store: Install Lumno on Chrome Web Store

For manual installation:

1. Clone or download this repository.
2. Open chrome://extensions/, or the equivalent extension management page in Edge, Brave, Vivaldi, Opera, or another Chromium browser.
3. Enable Developer mode.
4. Choose "Load unpacked" and select the repository root.
5. Optional: open Lumno settings to configure language, theme, new tab content, site search, blacklist rules, PiP, and shortcut behavior.

To use the command bar on local HTML, PDF, or file:// pages, enable "Allow access to file URLs" on the extension details page.

Development and CI use Node.js 20. If you use nvm, run nvm use to select the version declared in .nvmrc.

The React pages must be built before Chrome can load their generated assets. Before loading the development extension for the first time, and after editing react-src/, run:

npm ci
npm run build:react

Then keep Developer mode enabled in chrome://extensions/ and load the repository root as an unpacked extension. After generating new assets or changing background scripts or manifest.json, click Reload on the extensions page. Development installs do not force a second refresh when the Chrome profile starts, avoiding interruption of the startup New Tab override.

Before committing, run:

npm run verify
npm run audit:i18n
npm run audit:style
npm run package:store

Common targeted tests:

npm run test:settings
npm run test:search
npm run test:site-search-store
npm run test:message-router
npm run test:newtab-layout
npm run test:onboarding-content

npm run package:store reads the version from manifest.json and creates dist/lumno-store-v<version>.zip. It requires zip and zipinfo to be available on the system.

• Japanese localization: thanks to Humi for Japanese translation and review.
• macOS Ctrl+N / Ctrl+P suggestion navigation experiment: based on a contribution by wanghanzhen in PR #38.
• Bundled icon set: Remix Icon
• Bundled typeface: Open Sans

This project is licensed under GPL-3.0.