Bundle Analyzer Pro
Professional JavaScript bundle analysis and optimization
Bundle Upload
Drag and drop bundle files here
Supported formats: JSON, JS, CSS, and bundle analyzer outputs
Analysis Configuration
How to analyze JavaScript bundles online?
Analyze JavaScript bundles with our professional bundle analyzer. Identify optimization opportunities, track dependencies, and improve performance. Perfect for web development, performance optimization, and bundle size management.
Features
- Comprehensive JavaScript bundle size analysis
- Interactive dependency tree visualization
- Performance metrics and optimization recommendations
- Bundle comparison and historical tracking
- Framework-specific analysis (Angular, React, Vue)
- Asset optimization and compression analysis
- Dead code elimination and tree-shaking insights
- Code splitting and lazy loading recommendations
How to use
- Upload your JavaScript bundle file or provide bundle stats
- Select analysis type (size analysis, dependency analysis, or performance)
- Configure analysis parameters and thresholds
- Review the comprehensive analysis results and visualizations
- Explore optimization recommendations and best practices
- Compare with previous versions or export detailed reports
Tips & Best Practices
- All processing happens in your browser — no data is sent to any server.
- Use the copy button to quickly transfer results to your clipboard.
- The tool works offline once loaded — no internet connection required for processing.
- Check the FAQ section below for answers to common questions.
- Share this tool with colleagues using the social sharing buttons.
FAQ
What bundle formats are supported?
We support Webpack, Rollup, Vite, Parcel, and ESBuild bundle formats. You can upload bundle files directly or provide webpack-bundle-analyzer stats.
How accurate is the bundle analysis?
Our analysis uses industry-standard tools and algorithms to provide accurate bundle size measurements, dependency mapping, and optimization recommendations. Results are validated against industry standards to ensure accuracy and reliability across a wide range of input scenarios.
Can I compare different bundle versions?
Yes. You can upload multiple bundle versions and compare them side-by-side to track size changes, identify regressions, and measure optimization improvements.
What optimization recommendations are provided?
We provide specific recommendations for code splitting, lazy loading, tree shaking, dead code elimination, asset optimization, and dependency management. This is designed to handle both simple and complex use cases efficiently, giving professional developers a reliable everyday tool.
Is the tool suitable for large enterprise applications?
Absolutely. The tool is designed for enterprise-scale applications with support for complex dependency graphs and large bundle analysis.
Can I export analysis reports?
Yes. You can export detailed analysis reports in PDF, JSON, or CSV formats for sharing with your team or integration with CI/CD pipelines.
Does the tool support framework-specific analysis?
Yes. We provide specialized analysis for Angular, React, Vue, and other popular frameworks with framework-specific optimization recommendations.
How does dependency visualization work?
Our interactive dependency graph shows module relationships, import/export connections, and helps identify circular dependencies and optimization opportunities.
Can I analyze asset files like images and fonts?
Yes. The tool analyzes JavaScript bundles along with associated CSS, images, fonts, and other assets to provide comprehensive optimization insights.
Is there support for bundle size budgets?
Yes. You can set size thresholds and budgets, and the tool will alert you when bundles exceed recommended limits.
How does performance prediction work?
Based on bundle size, composition, and loading patterns, we predict loading performance and provide recommendations for improvement. The tool is engineered to handle both small and large inputs efficiently, leveraging modern browser capabilities for optimal performance.
Can I integrate this with my build process?
Yes. The tool provides APIs and export formats that can be integrated with CI/CD pipelines for automated bundle analysis and monitoring.