Extract readable text from PDFs with pdftotext when read_file returns garbled or binary content. Choose page ranges, preserve text layout where needed, and send the extracted content to standard output or a text file for further processing.
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Extract text from PDF files using pdftotext when read_file returns binary data
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When using read_file on PDF documents, the function may return binary image data or garbled content instead of readable text. This occurs because PDFs can contain scanned images or complex binary structures that read_file cannot properly parse as text.
Use the pdftotext command-line utility via run_shell to extract clean text content from PDF files.
import os
pdf_path = "path/to/document.pdf"
if not os.path.exists(pdf_path):
raise FileNotFoundError(f"PDF not found: {pdf_path}")
from tools import run_shell
# Extract text to stdout
result = run_shell(command=f"pdftotext '{pdf_path}' -", timeout=60)
pdf_text = result.stdout
# Alternative: extract to a temporary file
temp_txt = "/tmp/extracted.txt"
run_shell(command=f"pdftotext '{pdf_path}' '{temp_txt}'", timeout=60)
with open(temp_txt, 'r') as f:
pdf_text = f.read()
When calling read_file, be aware of the parameter name:
filetype="pdf" (not file_type)# Correct parameter usage
content = read_file(file_path="doc.pdf", filetype="pdf")
# If this returns binary/garbled data, fall back to pdftotext
| Option | Description |
|---|---|
- | Output to stdout |
-layout | Maintain original layout |
-f <n> | Start from page n |
-l <n> | End at page n |
-q | Quiet mode |
Example with options:
result = run_shell(command=f"pdftotext -layout -q '{pdf_path}' -", timeout=60)
from tools import run_shell
def extract_pdf_text(pdf_path):
"""Extract text from PDF using pdftotext with error handling."""
import os
if not os.path.exists(pdf_path):
raise FileNotFoundError(f"PDF not found: {pdf_path}")
result = run_shell(command=f"pdftotext '{pdf_path}' -", timeout=60)
if result.returncode != 0:
raise RuntimeError(f"pdftotext failed: {result.stderr}")
return result.stdout.strip()
read_file returns binary data, garbled text, or image content for a PDFpdftotext must be installed (part of poppler-utils on Debian/Ubuntu, poppler on macOS via Homebrew)run_shell(command="which pdftotext")아직 리뷰가 없습니다. 사용해 본 소감을 남겨 주세요.
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