First Contentful Paint Performance Test

This script, performance_test.js, is designed to measure the page rendering performance of a web browser. The script measures the First Contentful Paint (FCP), which is a key performance metric indicating the time at which the first text or image is painted on the screen aster navigating to a web page.

The tool can be used to benchmark web rendering performance on specific devices: desktop, mobile, embedded (IoT).

Features

• Measures First Contentful Paint (FCP) to evaluate the performance of a web browser in rendering a webpage.
• Logs performance metrics to the console for easy observation and analysis.
• Saves test results with associated data to a JSON file.

Quick Start

To run this script, follow these steps:

1. Ensure you have Node.js installed on your system. You can download it from Node.js official website.

2. Clone the repository and change directory to it.

git clone https://github.com/devpeer-net/web-rendering-performance.git
cd web-rendering-performance

3. Install dependencies

npm install

4. Run the script using Node.js by executing the following command:

node performance_test.js

To specify a browser version, you can set the path to its executable with the CHROME_PATH environmental variable.

For more information on available command line options see help.

node performance_test.js -h