A GUIDE TO CHROME DEVELOPER TOOLS

 ARTICLE

CHROME
DEVELOPER TOOLS

WHAT IS A DEVELOPER TOOL?

Developer tool is a special feature designed for the developer to have control over their code, by testing and debugging the software. This provides an in-depth access to the developers to solve and analyze the issues in the User Interface which in turn results in building a fine website faster. Any user can inspect any website and alter the code with the help of developer tools, however changes are reflected only in the user's browser until the page is refreshed.

CHROME DEVELOPER TOOLS

Chrome Developer tools are currently used by many web developers to enhance the workflow productively. It supports front end developing languages such as HTML, CSS and Javascript. By clicking the 'Inspect' option of chrome browser, a developer can use the DevTools of chrome. 

The Chrome developer tools are designed to determine and spot the problem, analyze the performance and website's memory, verify the resources and audit the SEO of the website.There are multiple features in chrome DevTools, as mentioned below,

ELEMENTS

Chrome DevTools open with Element Tab as default, displaying the rendered HTML of the page. Element tab allows developers to select the element of any choice and edit its content, style and layout. It helps developers to preview the output by modifying the HTML in the Element panel and prevent them from affecting the actual source code.

Element panel also holds sub panels consisting of styles, computed and layout to examine the design of the webpage.

CONSOLE

Console tab is used to recognize the errors and warnings of the webpage. It also helps to print the messages written by developers in the JavaScript of the webpage, to verify whether the JavaScript is executed. It can be used to run JavaScript code snippets. In the console, developers can interact with the Javascript of the page being built without debugging the source code.

SOURCE

The source tab's page panel is used to view all the resource files like html, javascript, CSS and Images that are loaded in the webpage. It can be used to inspect them. The Source panel is helpful for debugging Javascript by setting a breakpoint on the file's number line that a developer wants to break, step through the code, and see the values of variables. After refreshing, the page loads till the breakpoint.

 NETWORK

The Network tab exhibits all the files used in particular URL being viewed. It helps the developers to confirm whether the file is loaded or not. It is used to inspect the network activity by displaying the size and time taken to load a particular file. Adding to that, the throttling feature in the network tab, gives a better idea for a developer regarding network functionality of different internet speeds of the users.

PERFORMANCE

The Performance tab analyzes the runtime performance of a particular operation or the entire page. It presents the result in a graphical chart for a better user experience. This helps the developers to enquire into the operation, which takes more time and needs optimization. The Performance tab also has a throttling option as in the Network tab, that throttles developer’s CPU to experience the webpage performance in two or more times slower CPUs.

LIGHTHOUSE

Lighthouse auto-generates reports based on the site's performance which helps the developers to improve the webpage. It can generate reports based on certain categories like performance, accessibility, best practices, SEO and progressive development apps which can be configured by the developer to improve the webpage respectively. The 'Speed Index' report measures how quickly content is visually displayed during page load. Running a SEO audit, helps the developer to find their flaws affecting their page from Google ranking.

APPLICATION AND SECURITY

The Application tab helps in testing the local storage, sessions and cookies of the web app. The Security tab provides basic security information, site's HTTPS certificate and TLS status.The Security overview indicates secure and non-secure connection with green, yellow or different colours respectively.


    Chrome developer tools are integrated in the chrome browser by default. This makes it user-friendly for a developer as one need not perform any additional configuration. It plays an important role in a web development to analyze and fix the issues instantly.

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