javascript - Display line breaks as `n` in pdf to text conversion using pdf.js - Stack Overflow

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I used the code from this tutorial to set up the pdf to text conversion.

Looked all over on this site .js/ for some hints as to how to format the conversion, but couldn't find anything. I am just wondering if anyone has any idea of how to display line breaks as \n when parsing text using pdf.js.

Thanks in advance.

I used the code from this tutorial http://ourcodeworld./articles/read/405/how-to-convert-pdf-to-text-extract-text-from-pdf-with-javascript to set up the pdf to text conversion.

Looked all over on this site https://mozilla.github.io/pdf.js/ for some hints as to how to format the conversion, but couldn't find anything. I am just wondering if anyone has any idea of how to display line breaks as \n when parsing text using pdf.js.

Thanks in advance.

• javascript
• pdf
• pdf.js
• pdftotext

Share Improve this question Follow asked Jun 5, 2017 at 19:36 Thomas ValadezThomas Valadez 1,75722 gold badges2424 silver badges2727 bronze badges 2

• Have you tried replacing any \r with \\r and same with \n to \\n with something like string.replace('\r','\\r').replace('\n','\\n');?, note: for those who don't know \r (carriage return) is monly paired with a newline character in some environments (i.e. windows) – Patrick Barr Commented Jun 5, 2017 at 19:50
• yeah, I tried. except the \n doesn't ever exist. I am worried that the pdf.js just overlooks new line characters. – Thomas Valadez Commented Jun 5, 2017 at 19:57

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 9

In PDF there no such thing as controlling layout using control chars such as '\n' -- glyphs in PDF positioned using exact coordinates. Use text y-coordinate (can be extracted from transform matrix) to detect a line change.

var url = "https://cdn.mozilla/pdfjs/tracemonkey.pdf";
var pageNumber = 2;
// Load document
PDFJS.getDocument(url).then(function (doc) {
  // Get a page
  return doc.getPage(pageNumber);
}).then(function (pdfPage) {
  // Get page text content
  return pdfPage.getTextContent();
}).then(function (textContent) {
  var p = null;
  var lastY = -1;
  textContent.items.forEach(function (i) {
    // Tracking Y-coord and if changed create new p-tag
    if (lastY != i.transform[5]) {
      p = document.createElement("p");
      document.body.appendChild(p);
      lastY = i.transform[5];
    }
    p.textContent += i.str;
  });
});

<script src="https://npmcdn./pdfjs-dist/build/pdf.js"></script>

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