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In this tutorial we will show you how to create web extensions for multiple browsers. Depending on which browser you are using, here's how to build a project and create JavaScript code to interact with the browser tab. This means that you can write the code and then distribute the extension to the web browser with multiple browsers. Note: Other project structures can include folders for library code and JavaScript files to be executed in other areas of the extension. For example, background scripts for extensions, and other documents bundled with extensions (such as browser actions and page action pop-ups, sidebar, options pages, new tab pages, etc.).

The browser extension function is a plug-in that extends the function of the Web browser. Some enhancements are created using web technologies such as HTML, JavaScript, and CSS. Most modern web browsers have many third party extensions that can be downloaded. In recent years, the number of malicious browser extensions flooding the Web is increasing. Malicious browser extensions usually seem legitimate because they appear to be sent from the vendor's website, including enthusiastic customer reviews. In the case of affiliate marketing, these malicious extensions are usually used to redirect the user's browser to send fake clicks to websites that are considered part of the legitimate affiliate marketing program I will. In many cases, the user is completely unaware that this is happening, except that the browser's performance is degraded. The Web site eventually pays the wrong traffic number, and the user unconsciously participates in these advertising programs.

When you visit the website, the HTML page is sent to the browser. The browser needs to download all the assets contained in the HTML page. The browser needs to load the page, the style sheet, and of course the JavaScript file used in the image. Each of these assets takes time to load. The larger the file, the longer it will take. I compressed the image using an application called ImageOptim. To use it, all you have to do is to drag the image to your application ... that's it. The new compressed image replaces the old compressed image. If you want to automate image compression, you can reduce the image using a task runner (such as Grunt) when building the project.