Mobile Simulator Extension MSIM: Responsive Viewer EN
Mobile Simulator (MSIM) · Firefox
Professional mobile device simulator with multiple views, extensive device library, and sync scrolling
截图
简介
Mobile Simulator Extension: Responsive Viewer
Test, preview, and debug responsive designs across a massive library of mobile devices and tablets with the most powerful Mobile Simulator Extension on the Firefox Web Store.
🚀 Why Choose Mobile Simulator Pro?
Designing for the modern web requires testing across dozens of screen sizes. Mobile Simulator Extension: Responsive Viewer transforms your browser into a professional testing suite, allowing you to simulate any smartphone or tablet directly on your desktop.
📱 Extensive Device Library
Stop guessing how your site looks. Our Mobile Simulator provides high-fidelity frames for:
1) Apple iOS: iPhone 17 Pro / Pro Max, iPhone Air, iPhone 16 / 16 Pro, iPhone 15 series, classic models like iPhone SE, plus iPad Pro, iPad Air, and iPad Mini.
2) Android Suite: Samsung Galaxy S25, S24 Ultra, S23/S22, Google Pixel 9 / 9 Pro, Pixel 8 / 7, OnePlus 9, and Xiaomi Mi 11.
3) Tablets: iPad Pro 11 & 13 (incl. M4), iPad Air 13, Galaxy Tab S10, S9, and S8.
4) Custom Devices: Need a specific breakpoint? Use our Custom Device tool to enter any width and height.
🔥 Top Professional Features
Sync Scroll (Synchronized Scrolling): Scroll on one device and watch all other simulated screens follow in real-time. Perfect for side-by-side comparison testing.
Multi-View Mode: Open 2, 3, or 4 devices simultaneously to view your entire responsive grid at once.
Device Frames & Notches: See your website exactly as your users do, including hardware frames and screen notches for a realistic Mobile View.
One-Click Rotation: Instantly toggle between Portrait and Landscape modes to test orientation changes.
Quick Action Sets: Use pre-configured bundles like the "Popular 3-Pack" or "iOS Set" to speed up your workflow.
🛠 Built for Developers & Designers
Whether you are a web developer debugging a CSS issue or a designer performing a UX audit, this Responsive Viewer provides a seamless environment to ensure your site is mobile-friendly. It is the ultimate alternative to the native Firefox Developer Tools, offering a more visual and intuitive Mobile Simulator experience.
✅ Key Keywords Covered:
- Mobile Simulator Extension
- Responsive Viewer Firefox Extension
- Mobile View Extension
- Smartphone Simulator
- Device Simulator for Firefox
Transform your workflow today. Install the Mobile Simulator Extension: Responsive Viewer and build a better mobile web.
Mobile Simulator Extension MSIM: Responsive Viewer 是做什么的
Mobile Simulator Extension MSIM: Responsive Viewer 是一款面向 Firefox 的开发者工具类扩展，主要用来调试页面、查看样式与请求、测试接口、辅助前端开发。官方对它的介绍是：Professional mobile device simulator with multiple views, extensive device library, and sync scrolling在Firefox 附加组件商店（AMO）上，它当前版本 2.2.0，评分 5（1 人评价），约 76 名用户。
适合什么人用
从功能定位看，Mobile Simulator Extension MSIM: Responsive Viewer 更适合前端工程师、测试与需要经常查看页面结构的用户。如果你平时只是偶尔遇到相关需求，用浏览器自带功能也能凑合；但如果这件事每天都发生，装一个专门处理它的扩展通常比手动操作省事得多。
怎么安装 Mobile Simulator Extension MSIM: Responsive Viewer
- 打开Firefox 附加组件商店（AMO）上的官方页面；
- 点「添加到浏览器」并确认权限提示；
- 装好后在扩展列表里固定图标，方便随时开关。
本站只做索引与介绍，安装包来自官方商店。如果商店页面提示当前地区不可用，说明该扩展未在你所在区域上架。
常见问题
Mobile Simulator Extension MSIM: Responsive Viewer 是免费的吗？
Mobile Simulator Extension MSIM: Responsive Viewer 在Firefox 附加组件商店（AMO）免费提供下载。它是浏览器扩展，装上就能直接用，不需要注册账号。
Mobile Simulator Extension MSIM: Responsive Viewer 安全吗？
它只申请了 0 项权限，范围比较克制，没有申请「读取所有网站数据」这种大权限。
Mobile Simulator Extension MSIM: Responsive Viewer 支持哪些浏览器？
当前收录的版本来自Firefox 附加组件商店（AMO），适用于 Firefox。同一个扩展在其他商店可能有对应版本，但功能与版本号不一定相同。
怎么卸载 Mobile Simulator Extension MSIM: Responsive Viewer？
在扩展管理页找到 Mobile Simulator Extension MSIM: Responsive Viewer，点移除即可。它在本地保存的设置会一起清掉，不会残留数据。
权限清单 来自 manifest.json 原文
接口权限 3
activeTabscriptingstorage