You can use Puppeteer screenshot to ensure your application looks as intended and present clients with expected visuals. Puppeteer’s screenshot merely provides a regression testing validation to your CI/CD testing pipeline where you test visual bugs or functionality. Being open-source and providing broad support for its use makes it more and more popular in end-to-end testing. Puppeteer gives you a way to interact with the web. Have you ever wondered where you could use a simple screenshot function?
Where Is Puppeteer Screenshot Mostly Used? Node.js becomes a bot that will open a web browser, go to a new tab, open the website, and do much more. However, Puppeteer enables you to use Node.js as a client, putting yourself in the user-side viewpoint. Node.js is cross-platform and is mainly used for front-end and back-end application servers. It has endless use cases such as: But how is Puppeteer different from other Node.js modules?Ĭonventional ways of interacting with the web apps require knowledge of JavaScript, HTML, CSS, the tools you are going to use, and much more. Screenshot ( ) // Call Screenshot functionīy now, I hope you understand the basics of taking a screenshot with Puppeteer.
Simple screenshot note 3 install#
To install Puppeteer, open your command line and type the following code: The minimal requirement for Puppeteer is Node.js v6.40, but the versions are interdependent. Note: Be sure to install the newest version of Node.js. Make sure that node binary is in your environmental variables or PATH by typing node -v in the command line. Install Node.jsĭownload Node.js here and follow the installation steps. That way you don’t have to wait for the whole page to load and you can take faster screenshots. Put simply, Puppeteer provides ways to automate interaction with the browser, thus changing the way bots work. Puppeteer has many methods that are simple and flexible, like waitForSelector, which ensures the needed content is loaded.
Simple screenshot note 3 full#
Puppeteer runs headless by default but can be configured to run full (non-headless) Chrome or Chromium.” You can forget about manually adding HTTP headers and dealing with the complicated libraries that steepen your learning curve. What is Puppeteer?Īccording to Puppeteer’s documentation on GitHub, “Puppeteer is a Node library that provides a high-level API to control Chrome or Chromium over the DevTools Protocol. It has multiple options/parameters for use, such as the ability to enable full-page screenshot and to set saving directory, picture encoding, screenshot type, and more. For example, Puppeteer sets the initial page size to 800×600 pixels, but you can change it with tViewport. Taking a screenshot without Puppeteer always came with a steep learning curve. Puppeteer’s screenshot method is used to automate and save screenshots.
Simple screenshot note 3 how to#
Second, I’ll show you how to use it, why it is used, and, finally, where it is used. And in this post, I will explain what Puppeteer screenshot is and what it is composed of. Puppeteer screenshot is one of the tools that Puppeteer offers to take and save screenshots of a page. Have you ever tried to interact with the web using apps like cURL or some programming language with its HTTP Client Library? If so, you have undoubtedly run into struggles with HTTP headers, authentication, cookies, specific application layer requirements, or a seemingly simple task like taking a screenshot.
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