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#Nodejs print how to#
#Nodejs print pdf#
#Nodejs print manual#

#Nodejs print pdf#

path: Path specifies where to save the generated PDF file.

printBackground: When this option is set to true, Puppeteer prints any background colors or images you have used on the web page to the PDF.

Is quite complicated and allows for a lot of customization, which is fantastic. Initialize NPM and set up the usual Express server to get started with the tutorial. In this tutorial, we are using a Node backend for the task. You can use Puppeteer on the backend and frontend to generate PDFs.

Generating pre-rendered content for Single Page Applications (SPAs).

Perform automated UI tests while keeping the test environment up-to-date.

Generate PDFs and screenshots of web pages.

To name a few use cases where Puppeteer provides the perfect functionalities for web developers, Puppeteer’s powerful browser-capabilities make it a perfect candidate for web app testing and web scraping. Due to the lack of a GUI, the interactions with a headless browser take place over a command line.Įven though Puppeteer is mainly a headless browser, you can configure and use it as non-headless Chrome or Chromium.

#Nodejs print how to#

In that sense, a headless browser is simply just another browser that understands how to render HTML web pages and process JavaScript. If you are unfamiliar with the term headless browsers, it’s simply a browser without a GUI. Is, “A Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol”. What is Puppeteer, and why is it awesome? Let’s start the work with a quick introduction to what Puppeteer is. In this tutorial, we will see how to convert web pages into PDF with Puppeteer and Node.js. No matter your reason, Puppeteer, Google’s Node API for headless Chrome and Chromium, makes the task quite simple for you. Script at deserialization time: $ echo "require('v8').tDeserializeMainFunction(() => console.As a web developer, you may have wanted to generate a PDF file of a web page to share with your clients, use it in presentations, or add it as a new feature in your web app. Snapshot building time, thus avoiding the need of an additional entry The v8.startupSnapshot API can be used to specify an entry point at $ node -snapshot-blob snapshot.blob index.js # Load the generated snapshot and start the application from index.js. $ echo "console.log(globalThis.foo)" > index.js $ node -snapshot-blob snapshot.blob -build-snapshot snapshot.js # Run snapshot.js to intialize the application and snapshot the # state of it into snapshot.blob. $ echo "globalThis.foo = 'I am from the snapshot'" > snapshot.js The generated blob will be written, by default, to snapshot.blob When building the snapshot, if -snapshot-blob is not specified,

Generates a snapshot blob when the process exits and writes it toĭisk, which can be loaded later with -snapshot-blob. When loading ECMAScript module loader loads the program entry point, the nodeĬommand will only accept as input only files with. ECMAScript modules loader entry point caveat # Otherwise, the file is loaded using the CommonJS module loader.

Package.json file contains a top-level "type" field with a value of Point to be loaded with ECMAScript module loader. The program was started with a command-line flag that forces the entry.

If a file is found, its path will be passed to the ECMAScript module loader If noĬorresponding file is found, an error is thrown. That path is then resolved by CommonJS module loader. If the string is not anĪbsolute path, it's resolved as a relative path from the current workingĭirectory. The program entry point is a specifier-like string. Node Įxecute without arguments to start the REPL.įor more info about node inspect, see the debugger documentation.

#Nodejs print manual#

To view this documentation as a manual page in a terminal, run man node. These options expose built-inĭebugging, multiple ways to execute scripts, and other helpful runtime options. Node.js comes with a variety of CLI options. -max-semi-space-size=SIZE (in megabytes).-max-old-space-size=SIZE (in megabytes).-report-dir=directory, report-directory=directory.Warning: binding inspector to a public IP:port combination is insecure.-heapsnapshot-near-heap-limit=max_count.-force-node-api-uncaught-exceptions-policy.-experimental-specifier-resolution=mode.-disallow-code-generation-from-strings.ECMAScript modules loader entry point caveat.