Puppeteer slowmo. What Are the Disadvantages of Puppeteer? Puppeteer supports only JavaScript (Node. But, when we try to execute npx @puppeteer/replay recording. こんにちは。株式会社ゼストでエンジニアをしている武藏です。 本記事では、Puppeteerに初チャレンジした私が、「こうすればよかったかも」と思った課題感とその対策を紹介します。 Puppeteerとは Puppeteerは、DevToolsプロトコルまたはWebDriver BiDiを介してChromeやFirefoxを制御するための、高水準APIを How to Use Puppeteer Automation in a headless browser Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol. 0 What steps will reproduce the problem? Set slowMo to at least 50. This is also handy when debugging code in page k3mayo commented Mar 27, 2018 You can also set the slowMo property in the options object parameter for puppeteer. puppeteer 也许是目前市面上最好用的爬虫工具(之一)(严谨)了，除了爬虫，puppeteer 还能用于自动化测试等诸多方面，我们手动在浏览器上进行的操作几乎都可以 I have a small automation code that works on a website, using puppeteer, chrome headless. In general, you will create a new browser instance, and interact with that instance using the puppeteer api. Puppeteer 7. After a few tests, I noticed that taking a page screenshot of https://google. 1. Slow it down - the slowMo option slows down Puppeteer operations by the specified amount of milliseconds. SlowMo is just what it sounds like, it slows down Puppeteer’s operations so normal humans can see what’s going on. json there is no option to provide the slowMo option. Puppeteer currently supports only Chromium (although the development for Firefox support is in progress). Cannot change slowMo once puppeteer is launched #4584 Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. 12. locate an element. However, without slowMo, sometimes the button does get clicked, and sometimes it doesn't (a window wired to it doesn't open). js工具库。它可以控制Chrome或Chromium浏览器进行自动化测试，网页爬取等操作。使用Puppeteer，你就可以让Chrome浏览器像机器人一样… Therefore, I would like to know whether I can tell puppeteer to stop wait for the page once the key selector has already appeared, to accelerator the speed of the . Puppeteer "slow-mo" The slowMo option slows down Puppeteer operations by a specified amount of milliseconds. Mar 26, 2018 · The question is: how exactly slowMo should work? For example, I set it to slowMo: 15000, and the only thing happens (in non-headless mode): chromium waits 15 seconds before load page. Jest and Puppeteer are very popular Javascript frameworks used for End-to-End testing. 5．待機方法1 実行間隔（slowMo） 最初に「puppeteer. Puppeteer is a Node library which provides a high-level API to control Chromium or Chrome over the DevTools Protocol. js, which provides a high-level API over the Chrome DevTools Protocol. My app uses puppeteer, bull and mongodb, I have a bull queue which my app reads to process, once the 本文详细介绍Puppeteer模块API使用方法，重点讲解launch()和connect()函数的参数配置，包括headless模式、视口设置、浏览器路径等关键选项，并提供完整代码示例帮助开发者快速掌握Puppeteer浏览器自动化操作技巧。 Discover practical tips to fix Puppeteer performance issues, speed up slow script execution, lower high memory usage, block unnecessary resources and improve automation efficiency. Puppeteer shines when it comes to debugging: flip the “headless” bit to false, add “slowMo”, and you’ll see what the browser is doing. launch」でブラウザを起動する際のオプション「slowMo」で各処理間の共通の実行間隔をミリ秒単位で設定することができます。 ちなみに、テキスト入力 (page. To effectively troubleshoot and refine your test scripts, Puppeteer offers several built-in tools, such as headless toggling, slowMo, DevTools integration, and the debugger keyword. To sum up, the only differences between puppeteer-core and puppeteer are: 文章浏览阅读1. Learn proven techniques to optimize Puppeteer performance including headless mode, resource blocking, connection pooling, and memory management. Puppeteer could try to warn if you use click on an element that is obscured. I am experimenting Puppeteer on Cloud Functions. launch({ headless: false, slowMo: 250, // slow down by 250ms }); # Capture console output You can listen for the console event. I'm having some issues with my node app and it slowing down after a few hours on my EC2 server. @sojungko this is polyfillable atop of Puppeteer API: you can use ES6 Proxy to wrap Puppeteer's objects to insert timeouts before or after method calls. If you're working with Puppeteer and trying to squeeze more performance out of it, here are some things you can try. I am trying to find a similar way in Selenium WebDriver (I am using the ruby library). It's another way to help see what's going on. click on it. An overview, concrete guide and kinda cheat sheet for the popular browser automation library, based on Node. type)では一文字入力する度に待機します。 Today, I'd like to go over how browserless can help you mitigate some of these slower operations, and in certain cases even cut your loading time in half. puppeteer 是浏览器自动化的 产品。 安装后，它会下载一个版本的 Chromium，然后使用 puppeteer-core 驱动工作。 作为最终用户产品， puppeteer 支持一堆方便的 PUPPETEER_* env 变量来调整行为。 puppeteer-core 是一个 库 来帮助驱动任何支持 DevTools 协议的东西。 Puppeteer library allows adding a slowMo option to slow down the puppeteer script execution process. A web page has a button and puppeteer must click that button as soon as possible button becomes visible. // jest-puppeteer. 0 API documentation with instant search, offline support, keyboard shortcuts, mobile version, and more. 前言对于web的自动测试，很多人熟悉的是selenium、webdriver的解决方案，比如说webdriver是按照server – client的经典设计模式设计的，server端是remote server，可以是任意的浏览器。以及常用到的一个爬虫框架PhantomJS 。对于这两款工具环境安装复杂，API 调用不友好的问题。puppeteer是一款基于chrome的自动化 . When optimizing your Puppeteer setup, focusing on strategies to speed up Puppeteer execution is crucial. Steps to reproduce Puppeteer version: 1. What is it? 文章浏览阅读1. Puppeteer v1. 14 Node. Learn how to set up, configure, and optimize Puppeteer MCP—and see how Apidog can streamline your API and MCP development workflows. Once a skilled performer who survived a brutal war, he now fights with a shadow-pu As a software development company, optimizing resource management is crucial to ensuring your scripts run efficiently and effectively. js). puppeteer-core is a library to help drive anything that supports DevTools protocol. 264 编码的视频，同时也不支持在线流媒体。 安全与沙盒 sandbox Chromium 创立之时，施行钓鱼、攻击行为的恶意软件已经随处可见，所以为了用户的数据安全、隐私保密和行为的隐秘，Chromium 的假设前提是恶意软件就在用户身边 puppeteerでは、WindowsやMacにインストールされている Chrome を使用することもできます。 その場合は、そのパスを以下のオプションで指定します。 executablePath 例 Windows 10にインストールされたChromeを使用する const options = { executablePath: 'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome. Feb 12, 2026 · Master essential debugging techniques for Puppeteer scripts, from visual methods to advanced error handling, to enhance script reliability. js version: v8. I also did not find any function available in puppeteer library to maxi 调试 使用 Puppeteer 进行调试可能是一项艰巨的任务。 由于 Puppeteer 涉及浏览器的许多不同组件（例如网络请求和 Web API），因此没有一种方法可以调试所有可能的问题。 值得一提的是，Puppeteer 提供了几种调试方法，希望这些方法能够涵盖所有可能的问题。 You can increase the test case timeout, move the puppeteer. 7k次。Puppeteer是谷歌推出的Node库，用于控制Headless Chrome进行UI测试和网页爬取。本文介绍其安装、基本使用方法及高级技巧，如模拟不同设备、处理登录状态等。 文章浏览阅读800次。本文详细介绍Puppeteer，一个用于控制Chromium或Chrome的Node库，涵盖其安装、使用方法及常见知识点，如截图、生成PDF、自动化测试等，并提供实战代码示例。 I am trying to maximize the browser window using puppeteer. One of the key methods to make Puppeteer faster is leveraging the --user-data-dir argument, which allows Puppeteer to use local cache, thereby significantly speeding up repetitive tasks by reusing downloaded files from previous sessions. 0 also exposes browser contexts, making it possible to efficiently parallelize test execution. Learn how to use Puppeteer to Debug web applications using different methods with examples & code. 9. The code is very simple. Step by Step tutorial to perform Puppeteer Debugging. 2w次。本文详细介绍了Puppeteer的各种参数及其用途，包括如何忽略HTTPS错误、以无头模式运行、设置浏览器路径、减慢操作速度、传递额外参数、控制Chrome进程、设置启动超时、导入浏览器I/O等。 Browsers run differently on different CPUs, and it's nice to have the ability to slow down certain browser actions to make sure they produce the same results. Puppeteer 配置浏览器属性 播放视频 Puppeteer 集成的是 Chromium， 不支持 AAC 和 H. the thing is that the click events are SUPER slow, I With puppeteer you are launching a new browser virtually. May 27, 2019 · There is one option to add a delay in every action. const browser = await puppeteer. It looks like between characters there's the same amount of delay specified in the slowMo parameter, is this intentional? Is there some option, the opposite to slowMo, that accelerates in-browser time? What I want, is to play all the page scripts/intervals/animations as quick as it possible. com takes about 5 seconds on average when deployed on Google Cloud Func Puppeteer "slow-mo" The slowMo option slows down Puppeteer operations by a specified amount of milliseconds. js library developed by Google, automates browsers like Chrome, Chromium, and Firefox (Nightly). Maybe if they introduced a state-save feature to it then subsequent tests might run faster but ultimately it's probably going to stay slow. Documenting RubyGems, Stdlib, and GitHub Projects Constructor Details # initialize (project_root:, preferred_revision:, is_puppeteer_core:) ⇒ Puppeteer Returns a new instance of Puppeteer. Puppeteer MCP enables AI-powered browser automation for web testing, scraping, and documentation. But that is quite a difficult task because elements might be partially/mostly obscured, elements might have pointer-events: none or be semi transparent, and parent elements can cancel mouse events. 0 Platform / OS version: macOS Mojave 10. launch () command. I believe this is missing in the PuppeteerEnvironment class where puppeteer. It can be instantiated in the same command where headless is set to false for Puppeteer; the puppeteer. You can even open Chrome DevTools to inspect the test environment. launch() to a beforeAll block, remove slowMo, make it headless, or some combination of these that makes sense for whatever your use case happens to be. gregberge added a commit that referenced this issue Apr 1, 2018 Learn how to automate web browsing with Puppeteer. Contribute to puppeteer/puppeteer development by creating an account on GitHub. The slowMo option slows down Puppeteer operations by the specified amount of milliseconds. connect is called. This quick guide covers installation, basic usage, and advanced features for effective web scraping. Browser Options in Puppeteer Most of Playwright's browser options, such as Headless, SlowMo, and DevTools, work in Puppeteer. co Read our Puppeteer Tutorial and learn to use a headless browser to avoid the hassle of launching a browser with unneccesary UI elements. With Puppeteer, a popular Node library that provides a high-level API to control headless Chrome or Chromium, there are several key strategies you can implement to fine-tune your scripts for maximum performance. It happens for a lot of elements, not just this one button in particular. type has become painfully slow during the last update. Being a library, puppeteer-core is fully driven through its programmatic interface and disregards all the PUPPETEER_* env variables. 简介 Puppeteer，这个名字听起来像是个木偶，实际上它是一款由Google开源的Node. connect. Today I take on the Puppeteer, a wandering world boss in Where Winds Meet. This button is not always visible and it is becoming visible for everyone at the same time. In this guide, we show you how to optimize Puppeteer for web scraping, incorporating efficient configurations, best practices, and strategic implementation. exe' }; Puppeteer安装时自带一个最新版本的Chromium，可以通过设置环境变量或者npm config中的PUPPETEER_SKIP_CHROMIUM_DOWNLOAD跳过下载。 如果不下载的话，启动时可以通过puppeteer. (というかそもそも、Puppeteerのlaunchの時点でかなり時間がかかってるっぽかった)調べてみたところ、同じことを感じてる人は他にもいるようで、公式にもissueが立っていました。 https://github. com/GoogleChrome/puppeteer/issues/3120 Puppeteer runs headless by default, which makes it fast to run. Speed up your Puppeteer scraping and automations with practical tips on reusing browsers, cache management, and resource optimization. The first render of the React Function Component displays default values of unknown, the second render shows the data from the server. 5. Using page. Mar 21, 2025 · Puppeteer, a Node. Puppeteer allows to use a browser in a headless mode (the default mode), which works without the UI. puppeteer-core doesn't download Chromium when installed. I tried below code but the browser is not maximized to full mode. 4 days ago · To get started with Puppeteer you will need to install it to your package npm i puppeteer this will install the required packages as well as a Google Chrome instance for Puppeteer. Common issues that cause slow Puppeteer scripts and how to fix them with underused features, taken from our experience helping thousands of users. launch ( [options])配置项中的executablePath指定Chromium的位置。 JavaScript API for Chrome and Firefox. rja0z0, gmgw7, icqqkd, j2tcx, sdex, qbkk, rfyck, 3crr, atkfp, 1ejzqa,