HTML Preview Pro - Ultimate Live Preview & Responsive Testing installs statistics

HTML Preview Pro - Ultimate Live Preview & Responsive Testing

🚀 The most reliable HTML preview extension for VS Code - Never fails like other extensions!

A rock-solid, feature-rich VS Code extension that provides comprehensive HTML preview capabilities with live reload, responsive device testing, developer tools integration, and multi-browser support. Built from the ground up to be reliable, fast, and developer-friendly.

🎬 See It In Action

*Live demonstration of HTML Preview Pro's responsive testing, live reload, and multi-device preview capabilities*

✨ Why HTML Preview Pro?

🛡️ Rock-Solid Reliability

• Never fails to work - Comprehensive error handling and fallbacks • Cross-platform tested - Works perfectly on Windows, Mac, and Linux • VS Code compatibility - Tested across multiple VS Code versions • Graceful degradation - Features work even if some components fail

🚀 Advanced Preview Features

• Hot CSS Reloading - Instantly updates styles without refreshing the page • Fast reload - Full page reload when HTML/JS changes • Multi-file support - Handles HTML files with external CSS/JS/images • Local server integration - Proper asset resolution and CORS handling • Auto-refresh on save - Instant updates as you save

📱 Responsive Design Testing

• Device presets: iPhone 14 Pro, iPad, Samsung Galaxy S23, Surface Pro, and more • Custom viewports - Set any width/height for testing • Pixel-perfect testing - Accurate device simulation with proper DPI • Quick device switching - Toggle between devices instantly • Orientation support - Portrait and landscape testing

🔧 Developer Tools Integration

• Browser console in VS Code - See console logs without leaving editor • Network Inspector - Monitor network requests (Fetch/XHR) directly in the preview • Error overlay - Visual error reporting for runtime issues • Device Simulation - Test responsiveness with presets for iPhone, iPad, Samsung Galaxy, and more

🌐 Multi-Browser Support

• Smart browser detection - Opens in your preferred browser • Chrome, Firefox, Edge, Safari - Full support for all major browsers • Custom browser commands - Configure specific browser versions • Private browsing mode - Test without cache/cookies

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🚀 Installation

From VS Code Marketplace

1. Open VS Code 2. Go to Extensions (Ctrl+Shift+X) 3. Search for "HTML Preview Pro" 4. Click Install 5. Open any HTML file - you're ready!

First Use

1. Open an HTML file in VS Code 2. Press Ctrl+Shift+V for side preview or Ctrl+Shift+H for full preview 3. Or use the preview button in the editor toolbar 4. Watch live changes as you edit your code 5. Right-click for more options like responsive testing

📚 How to Use

Method 1: Keyboard Shortcuts (Recommended)

• Side Preview: Ctrl+Shift+V (Windows/Linux) or Cmd+Shift+V (Mac) • Full Preview: Ctrl+Shift+H (Windows/Linux) or Cmd+Shift+H (Mac) • Open in Browser: Ctrl+Shift+B (Windows/Linux) or Cmd+Shift+B (Mac) • Refresh Preview: Ctrl+Shift+R (Windows/Linux) or Cmd+Shift+R (Mac)

Method 2: Editor Toolbar

• Click the 📱 Show Side Preview button in the HTML editor toolbar • Click the 🖥️ Show Full Preview button for full-window preview • Click the 🌐 Open in Browser button to launch external browser

Method 3: Command Palette

• Press Ctrl+Shift+P • Type "HTML Preview Pro" • Select your desired action

Method 4: Context Menu

• Right-click any HTML file in Explorer • Select "Show Side Preview" or "Open in Browser"

📖 Detailed Features

Live Preview Panel

The preview panel provides a professional, feature-rich HTML viewing experience:

• Real-time updates - See changes instantly as you type • Smart reload - Only updates changed content, preserves scroll position • Error overlay - Visual feedback for HTML/CSS/JS errors • Status indicators - Live reload status and connection health • Zoom controls - Zoom in/out for detailed inspection

Responsive Testing Mode

Advanced responsive design testing capabilities:

• Device simulation - Accurate viewport and user agent simulation • Preset devices - iPhone, iPad, Android, Surface, MacBook, iMac presets • Custom viewports - Set any width/height combination • DPI scaling - Proper high-DPI device simulation • Mobile emulation - Simulates mobile viewport size and user agent

Developer Console Integration

Built-in console for debugging without leaving VS Code:

• Console logs - View console.log, warn, error messages • Error tracking - Capture errors from your preview • Live filtering - Search and filter console output

Smart File Watching

Intelligent file monitoring for optimal performance:

• Selective watching - Only watches relevant file types • Debounced updates - Prevents excessive reloads during rapid changes • Glob pattern support - Customizable file patterns to watch • Workspace-aware - Automatically detects workspace structure • Memory efficient - Optimized watching with minimal resource usage

⚙️ Configuration

Access settings via File > Preferences > Settings and search for "HTML Preview Pro":

Core Settings

htmlPreviewPro.autoReload

Default: true Enable/disable automatic preview refresh when files change:

htmlPreviewPro.autoReloadDelay

Default: 500 Delay in milliseconds before auto-reloading (prevents excessive reloads):

htmlPreviewPro.openInExternalBrowser

Default: "default" Choose which browser to use for "Open in Browser" command:

Options: "default", "chrome", "firefox", "edge", "safari"

Responsive Testing Settings

htmlPreviewPro.defaultDevice

Default: "desktop" Default device preset for responsive testing:

Options: "desktop", "iPhone 14 Pro", "iPhone SE", "iPad", "Samsung Galaxy S23", "Surface Pro", "MacBook Pro 13", "MacBook Pro 16", "iMac 24"

Developer Features

htmlPreviewPro.showConsole

Default: false Show browser console panel in preview:

htmlPreviewPro.injectDevTools

Default: true Inject developer tools and error overlay:

htmlPreviewPro.preserveScrollPosition…

Description from the VS Code Marketplace listing.