使用PdfToText提取PDF阿拉伯文本出现乱码问题求助

Hey there! I’ve dealt with similar Arabic text extraction headaches using PdfToText before, so let’s break down the most likely fixes that helped me resolve this kind of garbled output (΋ΎϬϧϟ΍υϔΣϟ΍ΦϳέΎΗ ΏϟΎρϟ΍ϡϳΩϘΗΝΫϭϣϧ ΩϳϘϟ΍ϡϗέ):

1. Force UTF-8 Encoding in PdfToText #

Most often, the issue comes down to PdfToText using a default encoding that doesn’t support Arabic characters. Make sure you explicitly specify UTF-8 when running the tool or configuring its wrapper:

• Command Line: Add the -enc UTF-8 flag:

  pdftotext -enc UTF-8 your_file.pdf output.txt
  

• Code Wrappers (e.g., Python’s pdftotext package): Ensure you set the encoding parameter when extracting:

  import pdftotext
  
  with open("your_file.pdf", "rb") as f:
      pdf = pdftotext.PDF(f)
  # Save the text with UTF-8 encoding
  with open("output.txt", "w", encoding="utf-8") as f:
      f.write("\n\n".join(pdf))
  

2. Check PDF Font Embedding #

Garbled text often happens if the Arabic font in your PDF isn’t embedded (only referenced from the system). To verify:

1. Open the PDF in a reader like Adobe Acrobat
2. Go to File > Properties > Fonts
3. Look for labels like "Not Embedded" or "Subset Embedded" next to Arabic fonts

If fonts aren’t embedded, pure text extraction will fail—you’ll need to combine PdfToText with an OCR tool like Tesseract (with the Arabic language pack installed) to recognize the text visually.

3. Fix RTL Text Display Issues #

Sometimes the extracted text is actually correct, but it displays as garbled because of right-to-left (RTL) rendering problems. If you’re showing the text in a web page:

• Beyond the meta tag, add CSS to handle RTL layout:

  .arabic-text {
      direction: rtl;
      unicode-bidi: embed;
      font-family: "Arial Unicode MS", "Segoe UI Arabic", sans-serif;
  }
  

• Test the extracted text in a UTF-8-aware editor first (like VS Code or Notepad++)—if it looks normal there, the problem is with your display setup, not the extraction.

4. Try Alternative Libraries #

If PdfToText still struggles, switch to a library with better non-Latin text support, like PyMuPDF (fitz):

import fitz  # PyMuPDF

doc = fitz.open("your_file.pdf")
extracted_text = ""
for page in doc:
    extracted_text += page.get_text()

# Save with UTF-8 encoding
with open("arabic_output.txt", "w", encoding="utf-8") as f:
    f.write(extracted_text)

PyMuPDF handles embedded and non-embedded Arabic fonts more reliably in most cases.

内容的提问来源于stack exchange，提问作者Ahmed Mahmoud