Otherwise, you might gloss over the fact that you cannot run the latest Puppeteer version and you also need to disable shm usage, using a flag: const browser = await puppeteer. If you install Puppeteer on the Alpine image, make sure you scroll down a bit to this part of the page. The official docs have a Troubleshooting section, where at the time of writing you can find all the necessary information on installing puppeteer with Docker. The official documentation states that “getting headless Chrome up and running in Docker can be tricky”. I think this is the trickiest part of the implementation – so let me save you a couple of hours of Googling. That was it! If you click on the save button, the PDF will be saved by the browser. Npm install html2canvas jspdf import html2canvas from 'html2canvas'Ĭonst domElement = document.getElementById('your-id') Html2canvas, to make a screenshot from the DOM This method is plain and simple: create a screenshot from the page, and put it in a PDF file. If you don’t have special needs, like selectable or searchable text in the PDF, it is a good and simple way to generate one. Option 1: Make a Screenshot from the DOMĪt first sight, this solution seemed to be the simplest, and it turned out to be true, but it has its own limitations. However, it probably makes more sense to let the backend handle it, as you don’t want to use up all the resources the user’s browser can offer.Įven so, I’ll still show solutions for both methods. It is possible to generate a PDF file both on the client-side and on the server-side. Final option 3: Puppeteer, headless Chrome with Node.jsĬlient side or Server side PDF generation?.Option 1: Making a Screenshot from the DOM.Client side or Backend side PDF generation?.This blogpost will walk you through on these possibilities and the final implementations.Ī personal comment before we get started: it’s quite a hassle, so buckle up! Table of Contents: So the PDF should have different styling and additions compared to the original React page.Īs the assignment was a bit more complex than what could have been solved with simple CSS rules, we first explored possible implementations. Furthermore, there were some special requests to manipulate the layout and make some rearrangements of the HTML elements. That page is basically a report/result for patients with data visualization, containing a lot of SVGs. Node.js is free of locks, so there's no chance to dead-lock any process., headless Chrome & Docker.īackground: A few months ago one of the clients of RisingStack asked us to develop a feature where the user would be able to request a React page in PDF format. Please make your commits in logical sections with clear commit messages.In this article I’m going to show how you can generate a Puppeteer PDF document from a heavily styled React web page using Node.js Node.js is an asynchronous event-driven JavaScript runtime and is the most effective when building scalable network applications. While developing your application it is very useful to have a source of scales data to subscribe to, but it is inconvenient to have to actually plug in a scales device and occasionally put things on it to generate fresh data, so the PrintNode server provides a virtual scales device called PrintNode Test Scale attached to a computer id 0.You can connect to this and it will continually. Pull requestsĬlear, concise pull requests are excellent at continuing the project's community driven growth. Please provide any additional details associated with the bug.
Isolate the problem to a simple test case.console.log (Math.floor (timestamp/1000)) Let us run the file in the terminal to see the output: node timestamps.js. console.log (timestamp) // timestamp in seconds. const timestamp Date.now () // timestamp in milliseconds. Check the issue search to see if it has already been reported. We can divide the timestamp by 1000 to get the timestamp in seconds.Well structured, detailed bug reports are hugely valuable for the project. For help with using Print.js, please ask questions on Stack Overflow and use the tag printjs. Please do not use the issues channel for support requests. Keep in mind that we would like to keep this a lightweight library. The issue tracker is the preferred channel for reporting bugs, requesting new features and submitting pull requests. Contributing to Print.jsĬontributions to Print.js are greatly welcomed and encouraged. Import printJS from 'print-js' Documentation
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