JavaScript Engine Test
Test your browser's JavaScript engine for feature support and performance. See how your browser compares with modern standards.
JavaScript Engine Test
Test your browser's JavaScript engine for feature support and performance. See how your browser compares with modern standards.
Results
How it Works
How It Works
This tool checks your browser's JavaScript engine for support of modern features (ES6+), and runs performance benchmarks on common operations. Results are displayed visually for easy comparison.
- Detects support for ES6/ES7/ES8+ features (let/const, arrow functions, async/await, etc.)
- Runs performance tests (loops, math, JSON, DOM, etc.)
- Displays results in a color-coded, interactive table and chart
- No data is sent to our server; all tests run in your browser
Technical Details
Technical Details
The JavaScript Engine Test uses feature detection and micro-benchmarks to evaluate your browser's JS engine. All processing is client-side for privacy.
- Uses
typeof,try/catch, and runtime checks for feature detection - Uses
performance.now()for timing benchmarks - All results are displayed instantly and locally
About This Tool
This tool is designed to help you understand your system's configuration and identify potential privacy and security issues.
All analysis is performed locally in your browser - no passwords, personal data, or system information is sent to our servers.
Use this tool to assess your privacy status, check for potential leaks, and understand how your system appears to websites.