pdf-thumbnail
!NPM versionnpm-imagenpm-url !Downloadsdownloads-imagenpm-url !Dependency Statusdependencies-imagedependencies-urlInstallation
$ npm i pdf-thumbnailGetting started
This module works with gm, so you have to install imagemagick and ghostscript on your pc.On Mac OS X:
$ brew install imagemagick
$ brew install ghostscript$ sudo apt-get install imagemagick
$ sudo apt-get install ghostscriptWhat is pdf-thumbnail?
pdf-thumbnail creates a thumbnail of the first page of a pdf file. You can also manipulate the image:You can resize it You can compress it with less quality You can crop it
How to use it
pdf-thumbnail returns a Promise:const pdf = require('pdf-thumbnail');
const pdfBuffer = require('fs').readFileSync('/some/path/example.pdf');
pdf(
pdfBuffer, /*Buffer or stream of the pdf*/
options
)
.then(data /*Stream of the image*/ => {
// ...
})
.catch(err => console.log(err))Options
An object where you can put the operations you would like to do on the thumbnail. The current available operations are:- Compress
- Crop
- Resize
Compress
const pdf = require('pdf-thumbnail');
const pdfBuffer = require('fs').readFileSync('/some/path/example.pdf');
pdf(pdfBuffer, {
compress: {
type: 'JPEG', //default
quality: 70 //default
}
})
.then(data => {
// ...
})
.catch(err => console.log(err))Crop
const pdf = require('pdf-thumbnail');
const pdfBuffer = require('fs').readFileSync('/some/path/example.pdf');
pdf(pdfBuffer, {
crop: {
width: 200,
height: 400,
x: 0,
y: 0
}
})
.then(data => {
// ...
})
.catch(err => console.log(err))If you want to crop the image keeping the aspect ratio, yuo have to add another key to the object:
crop: {
width: 200,
height: 400,
x: 0,
y: 0,
ratio: true //default true
}Resize
const pdf = require('pdf-thumbnail');
const pdfBuffer = require('fs').readFileSync('/some/path/example.pdf');
pdf(pdfBuffer, {
resize: {
width: 200, //default
height: 200, //default
}
})
.then(data => {
// ...
})
.catch(err => console.log(err))
