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Introduction to Chrome DevTools

Updated 6 June 2023

Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. DevTools can help you edit pages on-the-fly and diagnose problems quickly, which ultimately helps you build better websites, faster.

What is Chrome DevTools :

Chrome DevTools is a collection of web development tools integrated directly into the Google Chrome browser

Why use :

It provides a wide range of features and functionalities that help developers with web development, debugging, and performance optimization. Here are some reasons why developers use Chrome DevTools:

  • Inspecting and modifying HTML, CSS, and JavaScript
  • Debugging JavaScript
  • Monitoring network activity
  • Performance profiling
  • Mobile device emulation
  • Accessibility auditing
  • Console logging and error tracking

Accessing Chrome DevTools :

To access Chrome DevTools, simply open the Chrome browser and navigate to the web page you want to inspect. Go on the desired page, right-click anywhere on the page, and select “Inspect” from the context menu. Alternatively, you can use the keyboard shortcut “Ctrl+Shift+I” (Windows/Linux) or “Command+Option+I” (Mac) to open DevTools.


Features and Functionality :

Here are some of the core features you can expect to find:

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  • Elements: The Elements panel allows you to inspect and modify the HTML and CSS of a web page. You can navigate the DOM tree, manipulate styles, add or remove elements, and instantly see the results reflected in real time.
  • Console: The Console panel serves as an interactive JavaScript console, where you can execute commands, log messages, and debug JavaScript code. It provides a powerful environment for testing and experimenting with code snippets.
  • Sources: The Sources panel offers a comprehensive code editor with debugging capabilities. You can set breakpoints, step through code execution, inspect variables, and analyze call stacks, enabling you to pinpoint and fix issues within your JavaScript code.
  • Network: The Network panel allows you to monitor network requests made by the web page, including HTTP requests, response headers, and payload sizes. This feature is invaluable for optimizing performance, identifying bottlenecks, and diagnosing network-related issues.
  • Performance: The Performance panel provides insights into the loading and rendering performance of a web page. Using this tab you can record, analyze performance profiles, and identify areas for improvement.
  • Application: The Application panel helps you manage, and debug web application resources like databases, caches, and service workers. It provides a centralized interface to inspect and modify these resources, ensuring smooth operation and offline capabilities.

Its seamless integration with the Chrome browser, real-time insights, and range of features make it an essential companion for any developer looking to enhance their web development workflow.

Next Topic:- How to Use Elements Panel

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