浏览器减负+免费Chrome本地AI插件 | Browser Diet + Build Free Local Chrome AI

Chrome像塞满零食的背包，越背越慢；清理几个隐藏开关后立刻轻装上阵。再让AI帮你做插件，现在不会写代码也能拥有专属工具。Gemini Nano直接住进浏览器，很多任务本地完成，不花API钱。唯一的小脾气是偶尔会偷偷长胖，占点硬盘空间，但总体属于“吃得多、干活也多”的优秀员工。
Chrome can feel like a backpack stuffed with snacks—useful, but heavy. Trim a few hidden settings and it runs much faster. Add AI-powered extension building, and even non-coders can create useful tools. Gemini Nano brings AI directly into the browser, often without API costs. Its only quirk? It likes to occupy a bit of storage, but it works hard enough to earn its desk space.

🛠 极简实操步骤 / Step-by-Step Guide

  1. 优化 Chrome 浏览器提速 / Optimize Chrome Browser Speed 关闭后台运行、自动预加载、不必要同步及无用扩展程序。 / Turn off background running, preloading, unnecessary sync, and unused extensions.

  2. 开启本地 Gemini Nano 大脑 / Enable Built-in Gemini Nano AI 在地址栏输入并启用 Prompt API, Summarizer API, Translator API。 / Navigate to the address below and enable Prompt, Summarizer, and Translator APIs. chrome://flags

  3. 建立浏览器插件目录 / Create Extension Directory Structure 在本地创建项目文件夹，包含 manifest.json, popup.html, popup.js, icon.png。 / Create a local folder containing manifest.json, popup.html, popup.js, and icon.png.

  4. Python 自动生成 Manifest 配置文件 / Auto-generate Manifest via Python Script 运行以下 Python 脚本，一键秒级生成插件的核心结构。 / Run the following Python snippet to instantly bootstrap your Extension Manifest V3.

from pathlib import Path

Path("ai-summary-extension").mkdir(exist_ok=True)

manifest = """

{

  "manifest_version": 3,

  "name": "Local AI Summarizer",

  "version": "1.0",

  "action": {

    "default_popup": "popup.html"

  },

  "permissions": ["activeTab"]

}

"""

Path("ai-summary-extension/manifest.json").write_text(manifest)

print("done")


  1. 开发者模式加载自定义插件 / Load Unpacked Extension via Developer Mode 前往扩展程序页面，右上角开启“开发者模式”，点击“加载已解压的扩展程序”。 / Open extensions management, toggle Developer Mode, and click Load Unpacked. chrome://extensions

  2. 一键实现本地网页流式总结 / Start Local One-Click Web Summarization 点击插件图标，网页内容直通 Gemini Nano，本地输出总结，绝不上传服务器，连 Session Cookies 都是安全的！ / Click the icon to feed web content directly into Gemini Nano for local, private summaries.

相关链接(relative links) https://www.google.com/chrome/ https://www.microsoft.com/edge https://developer.chrome.com/docs/extensions/ https://github.com/GoogleChrome/chrome-extensions-samples https://claude.ai https://gemini.google.com https://github.com/vivekVells/cag-js https://developer.chrome.com/docs/ai/built-in https://developer.chrome.com/docs/ai/prompt-api https://chrome.dev/web-ai-demos/built-in-ai-playground/ https://chromeai.oslook.com/translate chrome://settings/clearBrowserData edge://settings/clearBrowserData chrome://flags edge://flags chrome://settings/system edge://settings/system/manageSystem chrome://settings/performance edge://settings/system/managePerformance chrome://extensions/ edge://extensions/ chrome://chrome-urls/ chrome://version chrome://on-device-internals chrome://optimization-guide-internals chrome://components await LanguageModel.availability();

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