pdf-scraper
v1.1.4
Published
Pure javascript cross-platform module to extract text from PDFs.
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pdf-scraper
Pure javascript cross-platform module to extract texts from PDFs.
Forked by Designly, from: https://gitlab.com/autokent/pdf-scraper. Original Author: Mehmet Kozan
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Installation
npm install pdf-scraper
Basic Usage - Local Files
import fs from 'fs'
import PDF from 'pdf-scraper'
let dataBuffer = fs.readFileSync('path to PDF file...');
PDF(dataBuffer).then(function(data) {
// number of pages
console.log(data.numpages);
// pages array
console.log(data.pages);
// number of rendered pages
console.log(data.numrender);
// PDF info
console.log(data.info);
// PDF metadata
console.log(data.metadata);
// PDF.js version
// check https://mozilla.github.io/pdf.js/getting_started/
console.log(data.version);
// PDF text
console.log(data.text);
});
Basic Usage - HTTP
You can use crawler-request which uses the pdf-scraper
Exception Handling
import fs from 'fs'
import PDF from 'pdf-scraper'
let dataBuffer = fs.readFileSync('path to PDF file...');
PDF(dataBuffer).then(function(data) {
// use data
})
.catch(function(error){
// handle exceptions
})
Extend
- v1.0.9 and above break pagerender callback
- If you need another format like json, you can change page render behaviour with a callback
- Check out https://mozilla.github.io/pdf.js/
// default render callback
function render_page(pageData) {
//check documents https://mozilla.github.io/pdf.js/
let render_options = {
//replaces all occurrences of whitespace with standard spaces (0x20). The default value is `false`.
normalizeWhitespace: false,
//do not attempt to combine same line TextItem's. The default value is `false`.
disableCombineTextItems: false
}
return pageData.getTextContent(render_options)
.then(function(textContent) {
let lastY, text = '';
for (let item of textContent.items) {
if (lastY == item.transform[5] || !lastY){
text += item.str;
}
else{
text += '\n' + item.str;
}
lastY = item.transform[5];
}
return text;
});
}
let options = {
pagerender: render_page
}
let dataBuffer = fs.readFileSync('path to PDF file...');
PDF(dataBuffer,options).then(function(data) {
//use new format
});
Options
const DEFAULT_OPTIONS = {
// internal page parser callback
// you can set this option, if you need another format except raw text
pagerender: render_page,
// max page number to parse
max: 0,
//check https://mozilla.github.io/pdf.js/getting_started/
version: 'v1.10.100'
}
pagerender (callback)
If you need another format except raw text.
max (number)
Max number of page to parse. If the value is less than or equal to 0, parser renders all pages.
version (string, pdf.js version)
check pdf.js
'default'
'v1.9.426'
'v1.10.100'
'v1.10.88'
'v2.0.550'
default version is v1.10.100 mozilla.github.io/pdf.js