🔲 Split Any Website into Up to 16 Resizable Panels Browser SplitView Master is a Firefox Add-on that transforms your browser into a customizable split screen workspace. View, compare, and interact with up to 16 websites simultaneously inside a single Firefox window for development, responsive testing, research, dashboard monitoring, and everyday multitasking. Instead of constantly switching tabs or opening multiple browser windows, organize your workflow using up to 16 independently resizable browser panels designed for productivity. Browser SplitView Master creates a true multi-panel browser workspace. Whether you're comparing websites side by side, testing responsive layouts, or managing several web applications simultaneously, this split view browser keeps everything organized in one place. 🚀 Why Browser SplitView Master? Browser SplitView Master is designed for workflows that require comparing multiple websites, monitoring dashboards, researching information, or testing web applications—all within a single Firefox window. It creates a true multi-panel browser workspace, allowing you to work with multiple websites simultaneously while keeping your desktop clean and your browser productivity high. ⚙ Designed for modern web workflows - ✔ View up to 16 websites simultaneously in split view - ✔ Multiple split-screen browser layouts - ✔ Vertical, horizontal, and browser grid layouts - ✔ Independently resizable browser panels - ✔ Optional synchronized scrolling for website comparison - ✔ Save and restore your favorite browser workspaces - ✔ Viewport screenshot capture - ✔ Reader Mode - ✔ Native support for over 50 languages - ✔ Lightweight and privacy-first 🏗 Build Your Ideal Browser Workspace Every workflow is different. Create browser panels for every website you need. Choose from multiple browser layouts including:

Two-panel comparison for side-by-side browsing
Three-panel workspace
Four-panel grid
Six-panel split view workspace
Nine-panel browser dashboard
Twelve-panel monitoring layout
Sixteen-panel browser workspace

Resize any split view panel at any time using intuitive drag handles without interrupting your browser multitasking session. ⚖ Compare Websites Side by Side Browser SplitView Master makes website comparison simple. Compare webpages efficiently:

Production vs Staging
Desktop vs Mobile
Before vs After redesigns
Competing websites
Search results
Documentation vs Applications
Multiple news sources
Product pages
Landing pages
SEO changes
Marketing campaigns

No more switching tabs or rearranging browser windows. Compare webpages and applications with everything visible exactly where you need it. 🔄 Synchronized Scrolling Keep multiple websites aligned while scrolling. Synchronized scrolling is ideal for:

Comparing translated content
Reviewing documentation
Website QA and browser comparison
Copy editing
Research
Legal documents
Contracts
Technical manuals
Policy comparison

Enable or disable synchronized scrolling whenever you need independent side-by-side browsing. 💾 Save Layouts & Sessions Every project has a different workflow. Save your preferred browser layout and restore it instantly whenever you return to a project. Create separate browser workspaces for:

Development
Research
Monitoring
Client projects
Trading
Learning
Daily productivity

Stop rebuilding the same browser layouts every day. 📱 Responsive Website Testing Browser SplitView Master helps developers and QA teams compare layouts across different viewport sizes without constantly resizing browser windows. Perfect for:

Responsive website testing
Mobile layout reviews
Tablet previews
Desktop comparison
UI validation
CSS debugging
Cross-layout verification

📸 Screenshot Capture Capture individual browser panels without taking screenshots of your entire desktop. Useful for:

Bug reporting
UI reviews
Design feedback
Documentation
Client communication
Presentations
Tutorials

📖 Reader Mode Focus on content instead of distractions. Reader Mode removes unnecessary page elements so you can concentrate on articles, blogs, documentation, tutorials, and knowledge bases. Perfect for reading long-form content while keeping reference material visible in adjacent browser panels in split view. ⚡ Built for Performance Browser SplitView Master is a lightweight Firefox extension designed for fast, efficient multi-panel browsing. Everything happens inside a single Firefox window, helping reduce desktop clutter and making browser multitasking more efficient. 🌍 Global Multilingual Support Browser SplitView Master speaks your language. The extension UI is natively localized into over 50 top languages—including Spanish, French, German, Chinese, Japanese, Portuguese, Russian, Hindi, and more. It automatically adapts to your browser's language setting for a seamless experience globally. 🎯 Perfect For 💻 Developers Front-end development, Responsive testing, API documentation, Compare staging and production, Debugging, Browser testing. 🐛 QA Engineers Website comparison, Regression testing, UI validation, Acceptance testing, Visual verification. 🎨 Designers Design reviews, UI comparison, Layout validation, Visual consistency. 🔍 Researchers Compare multiple sources, Academic research, Literature reviews, Fact checking. 🎧 Customer Support Teams Multiple helpdesk dashboards, CRM, Live chat, Email. 📋 Project Managers Jira, Trello, Notion, Documentation. 🎓 Students Online learning, Reading documentation, Taking notes, Comparing study material. 📈 SEO Professionals SERP comparison, Competitor research, Website audits, Content analysis. 📊 Analysts & Traders Dashboard monitoring, Financial charts, Analytics platforms, Live metrics. ✍ Content Creators & Writers Research, Writing, Editing, Translation comparison. ❓ Frequently Asked Questions How do I compare two websites side by side? Simply choose a split-screen layout and open each website in its own panel. Resize panels as needed and optionally enable synchronized scrolling for easier website comparison. Can I compare desktop and mobile websites? Yes. You can test responsive websites by setting one panel to a desktop view and another to a mobile or tablet size for side-by-side browsing and comparison. Can I view multiple websites in one browser window? Yes. Browser SplitView Master lets you display up to 16 independently resizable browser panels inside a single Firefox window. Can I monitor multiple dashboards? Yes, it functions perfectly as a browser dashboard. You can create a grid of 4, 9, or up to 16 panels to track live metrics and data feeds all at once. Does it open multiple browser windows? No. Unlike many traditional tools, this split view browser keeps everything inside one browser window for a cleaner multi-panel browser workspace. Can I synchronize scrolling? Yes. Enable synchronized scrolling whenever you need multiple webpages to stay aligned while browsing or comparing content. Can I save browser workspaces? Absolutely. Save your preferred browser layout and restore it instantly whenever you return to a project. 🔒 Privacy First Your browsing belongs to you. Browser SplitView Master is designed with privacy in mind.

No account required
No browsing history collection
No tracking of your browsing activity
Works locally on your device

💡 Work Smarter with Browser SplitView Master Whether you're developing websites, comparing pages, monitoring dashboards, researching information, testing responsive layouts, reviewing designs, or simply multitasking more efficiently, Browser SplitView Master helps you organize everything inside one powerful browser workspace. View, compare, and work with up to 16 websites simultaneously—all inside a single Firefox window.

Developer response

Developer response