It renders HTML documents and executes JavaScript code, but without displaying it on the screen. What Is Puppeteer?Īccording to the official definition, Puppeteer is 'A Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol'.Ī headless browser is basically a web browser without a graphic user interface.

One of the first to be released was Puppeteer. There are various browser automation tools in the market, implemented for several programming languages and with different features or purposes. Crawl a Single-Page Application (SPA) and generate pre-rendered content.Automate and validate keyboard input responses.Develop and implement a UI testing strategy using the latest version of Google Chrome Browser.Some examples where we could use a browser automation API are: With browser automation, we can do most of the things we do manually with a web browser. We also have different elements inside a web page that we can interact with: dialogs, downloads, authentication forms, videos, etc. With a browser automation tool, we can simulate interactions using input devices (keyboard, mouse, etc.), or we can verify that visual elements are working and displayed correctly. Its purpose is to achieve efficiency and speed at a certain level that wouldn't be possible if we rely on human interaction. 'Browser automation' is the action of automating the usage of a web browser. In this article, we will see how to implement automatic workflows interacting with a web browser instance.

One example of this is the dynamic generation of files and images.

We get consistent results over iterations.īesides the benefits that automation brings us, there are some scenarios that couldn't be achieved if we don't execute an automatic process.

Some of the reasons why we should try to automate our workflows are: Here we generate a CSV file and have the browser download it await page.One of the goals every developer has is to automate as many actions and tasks as possible. Const puppeteer = require ( 'puppeteer' ) Ĭonst browser = await puppeteer.launch()

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