#How to print Image or SVG in DOM/PDF | Explore Tumblr posts and blogs

goldkilop · 3 years ago

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Pdfextractor code

#PDFEXTRACTOR CODE PDF#

#PDFEXTRACTOR CODE FULL#

#PDFEXTRACTOR CODE PORTABLE#

#PDFEXTRACTOR CODE PDF#

You can use this PDF extractor to extract font from PDF file. For subset fonts, the font name is preceded by 6 random characters and a plus sign. This means that PDF files with subset fonts are smaller than PDF files with embedded fonts. For example: if the "a" character doesn't appear anywhere in the text, that character is not included in the font.

Subset - Only those characters that are actually used in the layout are stored in the PDF.

#PDFEXTRACTOR CODE FULL#

Embedded - A full copy of the entire character set of a font is stored in the PDF.There are two mechanisms to include fonts in a PDF: This makes sure that the file can be viewed and printed as it was created by the designer. Notice:īy preference, any fonts that are used in a layout are also included in the PDF file itself. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it.

#PDFEXTRACTOR CODE PORTABLE#

The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox. The output files will be listed in the "Output Results" section. Click "Submit" button to start processing. Select an extraction type from: text, images, fonts and attachments.ģ. Click "Choose Files" button to select multiple PDF files on your computer or click the dropdown button to choose online file from URL, Google Drive or Dropbox.Ģ. This adds jpg images to the generated files.1. FileWriter class JPGWriter extends FileWriter ) SvgRenderer const FileWriter = require ( 'pdf-extractor' ). CanvasRenderer const SvgRenderer = require ( 'pdf-extractor' ). PdfExtractor const CanvasRenderer = require ( 'pdf-extractor' ). How to use the default extractor to render png, html and text files for pdf pages:Ĭonst PdfExtractor = require ( 'pdf-extractor' ). The renderers can be extended or new ones can be injected into the extractor to render a pdf in new ways. The extractor can also be used for rendering in different ways. The only requirements are a pdf as input andĪ writable directory as output. This library can be used as-is to generate assets from a pdf. This makes this library an option to transition from the Box View API to an open-source solution. The generated files match the files of Box View. This project is inspired by the Box View / Crocodoc way of converting documents (with this tool pdfs) It uses a node.js DOM and the node domstub from pdf.js do make pdf parsingĪvailable on node.js without a browser. It has default renderers to generate a default output, but is easily extended to incorporate custom logic or This library is in it's most basic form a node.js wrapper for pdf.js. Text: Pdf text is extracted to a text file for different usages (e.g.This can be used as a (transparent) layer over the image SVG: Pdf objects are converted to svg using the.Image: A DOM Canvas is used to render and export the graphical layer of the pdf.Ĭanvas exports *.png as a default but can be extended to export to other file types like *.jpg.Images, svgs, html files, text files and json files from a pdf on node.js. Pdf-extractor is a wrapper around pdf.js to generate

#Pdfextractor code

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easinalif · 4 years ago

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Applications of SVG in industry

Mobile

In 2001 the cell phone industry picked SVG as the reason for its design stage. Many driving organizations joined the SVG exertion to deliver the SVG Tiny and SVG Basic profiles, all in all, called SVG Mobile and targetted asset restricted gadgets like versatile handsets and PDAs.

The SVG Mobile determination was embraced by 3GPP as the design of the necessary design for cutting edge telephones and interactive media informing (MMS). As of now, SVG-empowered handsets are transporting around the world.

SVG Mobile is principally utilized for informing in applications like hello cards, outlines, and liveliness. For additional subtleties allude to the SVG Mobile detail, written by a subgroup of the SVG Working Group including Nokia, Ericsson, and Motorola. Read this article about What is a vector image, why, and how can you use it?

The blend of rich graphical highlights, extensive content help, and goal freedom in SVG produce a configuration fit for printing. Driving print equipment organizations are at present building up the SVG Print detail: an adaptation of SVG explicitly fit printed copy yield.

Use instances of SVG incorporate an XML-based page portrayal language like Postscript and PDF, a last structure filing configuration, and variable information printing, where the data is given by a data set and yield utilizing a graphical SVG layout. SVG gives indistinguishable on the web and printed version shows.

Being founded on XML, SVG Print fits flawlessly into existing XML work processes. That is associations that have an information preparing pipeline that upholds XML can embed SVG Print capacities effectively into their distributing work process, empowering dynamic archive age. SVG Print likewise incorporates with a basic expected set of responsibilities organizations like PODi's PPML and CIP4's JDF.

More subtleties allude to the SVG Print Specification, wrote by a subgroup of the SVG WG including Canon, HP, Adobe, and Corel. Know more about What is a vector image, why, and how can you use it?

Web Applications

Online applications are expanding in notoriety. Designers are frequently restricted by program inconsistencies and missing usefulness. With incredible scripting and occasion support, SVG can be utilized as a stage whereupon to construct graphically rich applications and UIs.

With SVG, the application designer will utilize an assortment of open guidelines. They are not attached to one specific execution, seller, or creating apparatus.

Design and Interchange

SVG is appropriate to the very good quality graphical plan market regular in the Aerospace, Transportation, Automotive, and Telecommunication enterprises. The extensibility of XML permits SVG charts to have inserted metadata in restrictive organizations without influencing the introduction.

For instance, a CAD program could fare to SVG for online presentation, however, install information inside the document that encourages future altering or roundtripping.

Additionally, since many plan instruments support the import and fare of SVG, it very well may be utilized as an exchange design between applications. Read this article about What is a vector image, why, and how can you use it?

GIS and Mapping

Geographic Information Systems have unmistakable necessities: rich design highlights, support for vector and raster content, and the capacity to deal with a lot of information. SVG is appropriate to this market and numerous GIS frameworks give SVG send out.

Like the plan case referenced over, the capacity to broaden SVG and insert metadata is helpful to the planning local area. For instance, graphical components can be recognized as their local articles (like a lake), permitting applications to associate with the items graphically.

SVG is an ideal supplement to the OpenGIS consortium's GML design. GML, likewise XML-based, depicts topographical components like streams and streets. It tends to be changed over into SVG utilizing an XML pipeline for the online showcase.

Embedded Systems

Most inserted frameworks have extreme asset constraints, including more modest screens, restricted memory, and decreased handling ability contrasted with a run-of-the-millwork area framework. The SVG Mobile detail was intended for such gadgets and considers the improvement of graphical UIs for implanted frameworks. In its help for input occasions and scripting, gadgets can utilize an SVG frontend for control and observing, for example, a control framework for mechanical gadgets. Read this article about What is a vector image, why, and how can you use it?

Technical Details

SVG is a language for portraying two-dimensional designs in XML. SVG considers three kinds of realistic articles: vector realistic shapes (e.g., ways comprising of straight lines and bends), pictures, and text. Graphical items can be gathered, styled, changed, and composited into recently delivered objects. Text can be in any XML namespace reasonable to the application, which improves the accessibility and availability of the SVG designs. The list of capabilities incorporates settled changes, cutting ways, alpha veils, channel impacts, layout articles, and extensibility.

SVG drawings can be dynamic and intelligent. The Document Object Model (DOM) for SVG, which incorporates the full XML DOM, considers clear and effective vector design movement through scripting. A rich arrangement of occasion controllers, for example, onmouseover and onclick can be relegated to any SVG graphical item. Due to its similarity and utilizing of other Web guidelines, highlights like scripting should be possible on SVG components and other XML components from various namespaces all the while inside a similar Web page.

W3CSVG Home Page • Specifications: SVG 1.2 (draft) • SVG 1.1 • SVG Mobile • SVG Print • Requirements • Reference: Test Suite • SVG Implementations • Admin: Roadmap • Charter

Know more about What is a vector image, why, and how can you use it?

#Applications of SVG in industry #SVG #Vector File

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file-formats-programming · 7 years ago

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Aspose.Newsletter June 2018: Updates to Aspose Privacy Policy & Building BEST Word Processing Apps

Aspose Newsletter for June 2018 has now been published that highlights all the newly supported features offered in the recent releases. It includes information about Programmatically perform advance Word document manipulation tasks without using Microsoft Word, Updates to Aspose Privacy Policy, Support for .NET Standard 2.0 in Aspose.HTML for .NET & Aspose.BarCode for .NET, Microsoft Office 2016 charts support included in Aspose.Slides, LINQ reporting engine supports Null-Conditional operators in Template Expressions & many more.

Build the BEST Word Processing Apps using the Best Microsoft Word Compatible APIs for Any Platform

Programmatically perform advance Word document manipulation tasks without using Microsoft Word. Aspose.Words Product Family includes individual APIs for .NET, Java Android and SharePoint. Also export reports from JasperReports and SQL Server Reporting Services to Word document formats. It supports DOC, DOCX, RTF, XML, HTML, OpenDocument, PDF, XPS, EPUB and other formats. With Aspose.Words you can generate, modify, convert, render and print documents directly within your applications. Download Free Trial.

Privacy and Terms and Conditions Changes

In line with EU data protection law changes we’ve updated our Privacy Policy and Terms of use. We’ve made these updates to ensure our terms are easier to understand, more transparent and in keeping with international privacy standards. There is no action required from your end, we just wanted to let you know about these changes. As always, to update your newsletter preferences either change the settings against your Aspose account or use the unsubscribe link at the bottom of this email. If you have any questions about these changes, please reach out to us through the contact information homepage.

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How to: Create and Manipulate Microsoft Excel Charts and Shapes in C++ Applications?

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TSV files are used to contain spreadsheet data but without any formatting. The format is same with Tab Delimited where data is arranged in rows and columns such as tables and spreadsheets. Aspose.Cells does support to read and write TSV file format type, it includes relevant member (TSV) in both LoadFormat and SaveFormat Enumerations. Try .NET and Java sample code within your personalized applications now:

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Collect a copy of Aspose Newsletter, February 2018 edition

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#Build BEST Word Processing Apps #Microsoft Word Compatible APIs #Support for .NET Standard 2.0 #Microsoft Office 2016 Charts support #LINQ Reporting Engine Supports #Manipulate Excel Charts in C++#Convert PDF to HTML in Java

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qwertsypage · 4 years ago

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Puppeteer HTML to PDF Generation with Node.js

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, headless Chrome & Docker.

Background: 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. That page is basically a report/result for patients with data visualization, containing a lot of SVGs. Furthermore, there were some special requests to manipulate the layout and make some rearrangements of the HTML elements. So the PDF should have different styling and additions compared to the original React page.

As the assignment was a bit more complex than what could have been solved with simple CSS rules, we first explored possible implementations. Essentially we found 3 main solutions. This blogpost will walk you through on these possibilities and the final implementations.

A personal comment before we get started: it’s quite a hassle, so buckle up!

Table of Contents:

Client side or Backend side PDF generation?

Option 1: Making a Screenshot from the DOM

Option 2: Use only a PDF library

Final option 3: Puppeteer, headless Chrome with Node.js

Style manipulation

Send file to the client and save it

Using Puppeteer with Docker

Option 3 +1: CSS print rules

Summary

Client side or Server side PDF generation?

It is possible to generate a PDF file both on the client-side and on the server-side. 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.

Even so, I’ll still show solutions for both methods.

Option 1: Make a Screenshot from the DOM

At first sight, this solution seemed to be the simplest, and it turned out to be true, but it has its own limitations. 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.

This method is plain and simple: create a screenshot from the page, and put it in a PDF file. Pretty straightforward. We used two packages for this approach:

Html2canvas, to make a screenshot from the DOM jsPdf, a library to generate PDF

Let’s start coding.

npm install html2canvas jspdf

import html2canvas from 'html2canvas' import jsPdf from 'jspdf' function printPDF () { const domElement = document.getElementById('your-id') html2canvas(domElement, { onclone: (document) => { document.getElementById('print-button').style.visibility = 'hidden' }}) .then((canvas) => { const img = canvas.toDataURL('image/png') const pdf = new jsPdf() pdf.addImage(imgData, 'JPEG', 0, 0, width, height) pdf.save('your-filename.pdf') })

And that’s it!

Make sure you take a look at the html2canvas onclone method. It can prove to be handy when you quickly need to take a snapshot and manipulate the DOM (e.g. hide the print button) before taking the picture. I can see quite a lot of use cases for this package. Unfortunately, ours wasn’t one, as we needed to handle the PDF creation on the backend side.

Option 2: Use only a PDF Library

There are several libraries out there on NPM for this purpose, like jsPDF (mentioned above) or PDFKit. The problem with them that I would have to recreate the page structure again if I wanted to use these libraries. That definitely hurts maintainability, as I would have needed to apply all subsequent changes to both the PDF template and the React page.

Take a look at the code below. You need to create the PDF document yourself by hand. Now you could traverse the DOM and figure out how to translate each element to PDF ones, but that is a tedious job. There must be an easier way.

doc = new PDFDocument doc.pipe fs.createWriteStream('output.pdf') doc.font('fonts/PalatinoBold.ttf') .fontSize(25) .text('Some text with an embedded font!', 100, 100) doc.image('path/to/image.png', { fit: [250, 300], align: 'center', valign: 'center' }); doc.addPage() .fontSize(25) .text('Here is some vector graphics...', 100, 100) doc.end()

This snippet is from the PDFKit docs. However, it can be useful if your target is a PDF file straight away and not the conversion of an already existing (and ever-changing) HTML page.

Final Option 3: Puppeteer, Headless Chrome with Node.js

What is Puppeteer? The documentation says:

Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol. Puppeteer runs headless by default, but can be configured to run full (non-headless) Chrome or Chromium.

It’s basically a browser which you can run from Node.js. If you read the docs, the first thing it says about Puppeteer is that you can use it to Generate screenshots and PDFs of pages’. Excellent! That’s what we were looking for.

Let’s install Puppeteer with npmi i puppeteer, and implement our use case.

This is a simple function that navigates to a URL and generates a PDF file of the site.

First, we launch the browser (PDF generation only supported in headless browser mode), then we open a new page, set the viewport size, and navigate to the provided URL.

Setting the waitUntil: ‘networkidle0’ option means that Puppeteer considers navigation to be finished when there are no network connections for at least 500 ms. (Check API docs for further information.)

After that, we save the PDF to a variable, we close the browser and return the PDF.

Note: The page.pdfmethod receives an options object, where you can save the file to disk with the ‘path’ option as well. If path is not provided, the PDF won’t be saved to the disk, you’ll get a buffer instead. Later on, I discuss how you can handle it.)

In case you need to log in first to generate a PDF from a protected page, first you need to navigate to the login page, inspect the form elements for ID or name, fill them in, then submit the form:

await page.type('#email', process.env.PDF_USER) await page.type('#password', process.env.PDF_PASSWORD) await page.click('#submit')

Always store login credentials in environment variables, do not hardcode them!

Style Manipulation

Puppeteer has a solution for this style manipulation too. You can insert style tags before generating the PDF, and Puppeteer will generate a file with the modified styles.

await page.addStyleTag({ content: '.nav { display: none} .navbar { border: 0px} #print-button {display: none}' })

Send file to the client and save it

Okay, now you have generated a PDF file on the backend. What to do now?

As I mentioned above, if you don’t save the file to disk, you’ll get a buffer. You just need to send that buffer with the proper content type to the front-end.

printPDF.then(pdf => { res.set({ 'Content-Type': 'application/pdf', 'Content-Length': pdf.length }) res.send(pdf)

Now you can simply send a request to the server, to get the generated PDF.

function getPDF() { return axios.get(`${API_URL}/your-pdf-endpoint`, { responseType: 'arraybuffer', headers: { 'Accept': 'application/pdf' } })

Once you’ve sent the request, the buffer should start downloading. Now the last step is to convert the buffer into a PDF file.

savePDF = () => { this.openModal(‘Loading…’) // open modal return getPDF() // API call .then((response) => { const blob = new Blob([response.data], {type: 'application/pdf'}) const link = document.createElement('a') link.href = window.URL.createObjectURL(blob) link.download = `your-file-name.pdf` link.click() this.closeModal() // close modal }) .catch(err => /** error handling **/) }

That was it! If you click on the save button, the PDF will be saved by the browser.

Using Puppeteer with Docker

I think this is the trickiest part of the implementation - so let me save you a couple of hours of Googling.

The official documentation states that “getting headless Chrome up and running in Docker can be tricky”. 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.

If you install Puppeteer on the Alpine image, make sure you scroll down a bit to this part of the page. 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.launch({ headless: true, args: ['--disable-dev-shm-usage'] });

Otherwise, the Puppeteer sub process might run out of memory before it even gets started properly. More info about that on the troubleshooting link above.

Option 3 + 1: CSS Print Rules

One might think that simply using CSS print rules is easy from a developers standpoint. No NPM or node modules, just pure CSS. But how do they fare when it comes to cross-browser compatibility?

When choosing CSS print rules, you have to test the outcome in every browser to make sure it provides the same layout, and it’s not 100% that it does.

For example, inserting a break after a given element cannot be considered an esoteric use case, yet you might be surprised that you need to use workarounds to get that working in Firefox.

Unless you are a battle-hardened CSS magician with a lot of experience in creating printable pages, this can be time-consuming.

Print rules are great if you can keep the print stylesheets simple.

Let’s see an example.

@media print { .print-button { display: none; } .content div { break-after: always; } }

This CSS above hides the print button, and inserts a page break after every div with the class content. There is a great article that summarizes what you can do with print rules, and what are the difficulties with them including browser compatibility.

Taking everything into account, CSS print rules are great and effective if you want to make a PDF from a not so complex page.

Summary: Puppeteer PDF from HTML with Node.js

So let’s quickly go through the options we covered here for generating PDF files from HTML pages:

Screenshot from the DOM: This can be useful when you need to create snapshots from a page (for example to create a thumbnail), but falls short when you have a lot of data to handle.

Use only a PDF library: If you need to create PDF files programmatically from scratch, this is a perfect solution. Otherwise, you need to maintain the HTML and PDF templates which is definitely a no-go.

Puppeteer: Despite being relatively difficult to get it working on Docker, it provided the best result for our use case, and it was also the easiest to write the code with.

CSS print rules: If your users are educated enough to know how to print to a file and your pages are relatively simple, it can be the most painless solution. As you saw in our case, it wasn’t.

Make sure to reach out to RisingStack when you need help with Node, React, or just JS in general.

Have fun with your PDF HTML’s!

Puppeteer HTML to PDF Generation with Node.js published first on https://koresolpage.tumblr.com/

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