PDF import fails.

[cidrugHug8]

trafficstars

Hi, The following error was output to the docker log.

loading pdf
Warning: Indexing all PDF objects
Error
    at InvalidPDFExceptionClosure (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:452:35)
    at Object.<anonymous> (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:455:2)
    at __w_pdfjs_require__ (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:45:30)
    at Object.<anonymous> (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:7939:23)
    at __w_pdfjs_require__ (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:45:30)
    at /app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:88:18
    at /app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:91:10
    at webpackUniversalModuleDefinition (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:18:20)
    at Object.<anonymous> (/app/node_modules/pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js:25:3)
    at Module._compile (node:internal/modules/cjs/loader:1254:14) {
  message: 'Invalid PDF structure'
}

[n4ze3m]

Hi there, I'm sorry for the PDF loading issue you encountered. Could you please confirm whether you used a protected PDF file? This information will help me better understand the problem and provide you with the appropriate solution. Thank you!

[n4ze3m]

UPDATE: I tested with a password-protected PDF file, and it failed to process. I will figure out how to resolve this issue.

[cidrugHug8]

Thank you for your quick reply. PDF file is not encrypted. pdfinfo results are as follows.

$ pdfinfo  Engineer\ Reference.pdf 
Title:           My Document
Subject:         
Keywords:        
Author:          yamada
Producer:        madbuild
CreationDate:    Wed Jun 22 11:02:51 2022 JST
ModDate:         Wed Jun 22 11:02:51 2022 JST
Custom Metadata: no
Metadata Stream: no
Tagged:          no
UserProperties:  no
Suspects:        no
Form:            none
JavaScript:      no
Pages:           175
Encrypted:       no
Page size:       595.28 x 841.89 pts (A4)
Page rot:        0
File size:       25883386 bytes
Optimized:       no
PDF version:     1.4

[noureldinz3r0]

same i get this error: PDF.js v2.9.359 (build: e667c8cbc) Message: Invalid PDF structure.

but not all pdfs, if the pdf is a bit large this happens

[n4ze3m]

same i get this error: PDF.js v2.9.359 (build: e667c8cbc) Message: Invalid PDF structure.

but not all pdfs, if the pdf is a bit large this happens

Yes, I am currently using pdf-parse as a document loader, but it cannot handle large files. So, I am trying to set up a custom loader that will split large PDFs into smaller ones and then feed them to pdf-parse.

[MY221B]

I have the same problem and splitting the large file into multiple 25-pages sections works.

So for anyone who has the same issue, for now you could try PyPDF2 in Python to split a PDF into separate files:

1. pip install PyPDF2
2. python pdf_splitter.py

---

import PyPDF2

pdf_path = "path/to/your/pdf.pdf" pages_per_file = 25

with open(pdf_path, "rb") as file: reader = PyPDF2.PdfReader(file) total_pages = len(reader.pages)

file_number = 1
page_count = 0
writer = PyPDF2.PdfWriter()

for page_number in range(total_pages):
    writer.add_page(reader.pages[page_number])
    page_count += 1

    if page_count == pages_per_file or page_number == total_pages - 1:
        output_filename = f"output_file_{file_number}.pdf"
        with open(output_filename, "wb") as output_file:
            writer.write(output_file)

        # Reset the page count and create a new writer for the next file
        page_count = 0
        file_number += 1
        writer = PyPDF2.PdfWriter()

---

3. python pdf_splitter.py

[n4ze3m]

Hey guys, I have created a custom PDF loader on v0.0.12. I hope it resolves the issue with large PDF files. Please try the latest version and let me know.

Note that the PDF loader still can't load protected PDF files.

[l4time]

I'm able to upload PDFs with thousand of pages with v0.0.12. Fixed it for me

[n4ze3m]

Closing this issue based on the comment above. Feel free to reopen if the problem still exists. Thank you.