How to read password protected PDF file in Nodejs and get it in buffer?

Question

I tried using pdfjs-dist. getting large json response.

var PDFJS=require('pdfjs-dist');
PDFJS.getDocument({ url: 'p1.pdf', password: '' }).then(function(pdf_doc) 
{
console.log(pdf_doc);
}).catch(function(error) {
// incorrect password

// error is an object having 3 properties : name, message & code
});

Response This is the whole response I am getting. but I need response in buffer. Can it be converted to buffer.

    PDFDocumentProxy {
    loadingTask:
    { _capability:
     { resolve: [Function], reject: [Function], promise: [Promise] },
 _transport:
  WorkerTransport {
    messageHandler: [Object],
    loadingTask: [Circular],
    commonObjs: [Object],
    fontLoader: [GenericFontLoader],
    _params: [Object],
    CMapReaderFactory: [DOMCMapReaderFactory],
    destroyed: false,
    destroyCapability: null,
    _passwordCapability: null,
    _networkStream: [PDFNodeStream],
    _fullReader: [PDFNodeStreamFsFullReader],
    _lastProgress: [Object],
    pageCache: [],
    pagePromises: [],
    downloadInfoCapability: [Object],
    numPages: 4,
    pdfDocument: [Circular] },
 _worker:
  { name: null,
    destroyed: false,
    postMessageTransfers: true,
    verbosity: 1,
    _readyCapability: [Object],
    _port: [LoopbackPort],
    _webWorker: null,
    _messageHandler: [Object] },
 docId: 'd0',
 destroyed: false,
 onPassword: null,
 onProgress: null,
 onUnsupportedFeature: null },
 _pdfInfo:
 { numPages: 4,
 fingerprint: '3432353738363537336c6e665361446f6f744f4a70' },
_transport:
  WorkerTransport {
 messageHandler:
  { sourceName: 'd0',
    targetName: 'd0_worker',
    comObj: [LoopbackPort],
    callbackId: 1,
    streamId: 1,
    postMessageTransfers: true,
    streamSinks: [Object],
    streamControllers: [Object: null prototype] {},
    callbacksCapabilities: [Object: null prototype] {},
    actionHandler: [Object],
    _onComObjOnMessage: [Function] },
 loadingTask:
  { _capability: [Object],
    _transport: [Circular],
    _worker: [Object],
    docId: 'd0',
    destroyed: false,
    onPassword: null,
    onProgress: null,
    onUnsupportedFeature: null },
 commonObjs: { objs: [Object: null prototype] {} },
 fontLoader:
  GenericFontLoader {
    docId: 'd0',
    nativeFontFaces: [],
    styleElement: null,
    loadingContext: [Object],
    loadTestFontId: 0 },
 _params:
  [Object: null prototype] {
    url: 'p1.pdf',
    password: '',
    rangeChunkSize: 65536,
    CMapReaderFactory: [Function: DOMCMapReaderFactory],
    ignoreErrors: true,
    pdfBug: false,
    nativeImageDecoderSupport: 'none',
    maxImageSize: -1,
    isEvalSupported: true,
    disableFontFace: true,
    disableRange: false,
    disableStream: false,
    disableAutoFetch: false,
    disableCreateObjectURL: false },
 CMapReaderFactory: DOMCMapReaderFactory { baseUrl: null, isCompressed: false },
 destroyed: false,
 destroyCapability: null,
 _passwordCapability: null,
 _networkStream:
  PDFNodeStream {
    source: [Object],
    url: [Url],
    isHttp: false,
    isFsUrl: true,
    httpHeaders: {},
    _fullRequest: [PDFNodeStreamFsFullReader],
    _rangeRequestReaders: [Array] },
 _fullReader:
  PDFNodeStreamFsFullReader {
    _url: [Url],
    _done: false,
    _storedError: null,
    onProgress: [Function],
    _contentLength: 112979,
    _loaded: 112979,
    _filename: null,
    _disableRange: false,
    _rangeChunkSize: 65536,
    _isStreamingSupported: true,
    _isRangeSupported: true,
    _readableStream: [ReadStream],
    _readCapability: [Object],
    _headersCapability: [Object] },
 _lastProgress: { loaded: 112979, total: 112979 },
 pageCache: [],
 pagePromises: [],
 downloadInfoCapability:
  { resolve: [Function], reject: [Function], promise: [Promise] },
 numPages: 4,
 pdfDocument: [Circular] } }
                                                                                                                                                                                        *ignore below text*

efwrg rgsretg resgerstgh;ergh ;resjgysregh regjes powrjgu oiuueryoeq uieqroeqreqrilih ehr oiyeroeq ioiyeqroeq oieyqrioeq oieqyr oiyeqr oiyeqrp ioqyet oiehr oiyerh oieyreq oiyheqri iohereqk ioheqr qerioyqereq ioehqriheq rioqehriqeb ioeqrhpeq ioeqrhiqe ioqehriq ioqerhioq oirhqeipor oiqehrieq ioehqrq ioeqhrieq iohqerpq ieqhrpeq ioeqhrpeq iheqrpqe oiehrpqe ieqhrqierh ioeqhr ieqhr ioeqrh piqerh ieqhr iheqr piheqr ioheqr iheqr ioeqhrp ioqhre oieqhr oeqiyr qoeiryf pouqer poqure pouqr pouqre[q poquerq poqeur[q poqeur poqwuer poquer[ poqwur[wq poqr[ poqwhr powrq pow

What's your end goal? Do you need to get the text from the pdf page by page? — Nuhman
– Nuhman, Commented Jul 2, 2019 at 6:55

Nuhman · Accepted Answer · 2019-07-02 10:16:32Z

4

You may open and read a password protected PDF like below. Working with your existing code:

var PDFJS = require('pdfjs-dist');
PDFJS.getDocument({ url: 'p1.pdf', password: '' }).then(function(pdf) 
{
  let text = [];
  for(let i = 1; i <= pdf.numPages; i++) {
    pdf.getPage(i).then(function(page) {
      page.getTextContent().then(function(data) {
        for(let j = 0; j < data.items.length; j++) {
          text.push(data.items[j].str);
        }        
      });
    });
  }

}).catch(function(error) {
// incorrect password

// error is an object having 3 properties : name, message & code
});

edited Jul 2, 2019 at 10:16

answered Jul 2, 2019 at 7:18

Nuhman

1,2901 gold badge18 silver badges23 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

Jadavananda Bordoloi Over a year ago

getting error (node:11684) UnhandledPromiseRejectionWarning: Error: Invalid page request

Jadavananda Bordoloi Over a year ago

pdfreader is able to convert non-password protected pdfs to text. I cannot find any options for password there. do you have any idea ?

Jadavananda Bordoloi Over a year ago

I have got the Point. Thnak you so much.

Nuhman Over a year ago

What changes did you make? Maybe I can add it to the answer.

Jadavananda Bordoloi Over a year ago

number of pages starts from 1 not 0

|

Collectives™ on Stack Overflow

How to read password protected PDF file in Nodejs and get it in buffer?

1 Answer 1

6 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

6 Comments

Your Answer

Sign up or log in

Post as a guest

Related