PDFMerge

Merge multiple PDF Files into a single PDF document supporting three output formats: Buffer, Stream, New file on disk.

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PDFMerge uses PDFtk to merge the documents and as such it is a requirement in order for PDFMerge to work. It will work on any platform supported by PDFtk.
Starting from v1.0.0 a requirement of Node >= 4.0.0 is required as well. If you are stuck in the dark ages then npm i pdf-merge@0.1.1 should still work.

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#### Windows
Download and run the Installer.

#### Debian, Ubuntu
``
apt-get install pdftk
`
#### RPM
https://www.pdflabs.com/docs/install-pdftk-on-redhat-or-centos/

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PDFMerge(files, options)

files is expected to be an array of files (must be full path for each respective file) or objects.

The file object have the follow options:
* file Full path of PDF file
inputPw Password to decrypt a PDF Optional!*


options:
libPath Should only be provided if pdftk is not in your PATH Optional!*
output Defaults to Buffer. Values Buffer, Stream, and path to a new file are accepted. Optional!*
* execOptions This is an optional string where you can pass additional argument to pdftk, for
example compress. For the complete list see the docu of the pdftk

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`javascript
const PDFMerge = require('pdf-merge');

const files = [
${__dirname}/1.pdf,
${__dirname}/2.pdf,
{file: ${__dirname}/protected.pdf, inputPw: '_SeCrEt_'}
];

//Buffer (Default)
PDFMerge(files)
.then((buffer) => {...});

//Stream
PDFMerge(files, {output: 'Stream'})
.then((stream) => {...});

//Save as new file
PDFMerge(files, {output: ${__dirname}/3.pdf})
.then((buffer) => {...});
``