Not reading the pdf file

[drnko]

Whenever I'm converting an image to PDF and trying to extract the text from the converted PDF, the result from PDFplumber is blank.

What I'm doing wrong?

Step 1:
Converting an image(jpeg/jpg/png) to PDF using the PIL
Saving the converted pdf file.

Step 2:
Open converted/saved pdf using pdfplumber.open()
Extracting text from the loaded/opened pdf file

===============================================================

Below is the code:

image_1 = Image.open(r'D:\ocr\images\barrel.jpg')
im_1 = image_1.convert('RGB')
im_1.save(r'test.pdf')

inv_pdf = pdfplumber.open('test.pdf')
print('Result:' , inv_pdf.pages[0].extract_text())

===============================================================
Terminal:

PS D:\ocr> & "C:/Program Files/Python310/python.exe" d:/ocr/testing.py
Result:

PS D:\GitOCR\ocr>

===============================================================

Below are the files converted PDF files from image file:

test.pdf

test1.pdf

test2.pdf

version: pdfplumber 0.7.6

[jsvine]

Hi @drnko, and thanks for your interest in this library. It appears you're trying to do the following:

1. Convert an image to a PDF
2. Extract text from that PDF

The PDF you create in step 1 is an "image-based PDF" (see here for context), and contains no information about the actual text it represents — it's just a picture.

You can try using OCR (optical character recognition) software to add a text layer back to the PDF, but pdfplumber will not work as well with those sorts of PDFs as it does with original-text PDFs.

[drnko]

@jsvine
Thanks for the reply...
We also tried ocrmypdf to add a text layer back to the PDF, but pdfplumber does not work with every searchable sorts of PDFs(created by ocrmyPDF) as it does with original-text PDFs.

Request you to please us how we can create original-text PDFs from scanned images(jpg/jpeg/png)??