OCRmyPDF and Tesseract not making PDFs searchable

[Filippos Koliopanos]

Hello,

I have been trying to make PDFs searchable using OCRmyPDF and Tesseract, but despite following recommended steps, I have been unable to get the desired results.

Here is a summary of the issues I have faced:

1. Initially, I tried running OCRmyPDF on a PDF document (created by exporting a PNG image to PDF via GIMP) using the command `ocrmypdf -l eng OCR_test_eng.pdf outputOCR.pdf`. The process completed without errors, but the output PDF was not searchable.

2. I then updated my Tesseract to version 5.3.1+git6228-24da4c71-1ppa1~jammy1, hoping it might resolve the problem. However, the issue persisted.

3. I also attempted using the `--force-ocr` option with OCRmyPDF, but the output PDF remained unsearchable. Interestingly, for a scanned PDF document, OCRmyPDF indicated that the document already had text, even though it was not searchable.

4. To rule out problems with OCRmyPDF, I tried using pdfsandwich for OCR. However, it reported that Tesseract was unable to produce a PDF output file, suggesting that the problem might be with Tesseract itself.

5. I am running these commands on a Linux system Ubuntu 22.04.2 LTS

I have had no success with previous attempts at using Tesseract for OCR on Linux, and I'm hoping to finally resolve this issue. Any guidance would be greatly appreciated.

Best,
Filippos

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[Zdenko Podobny]

1. Provide also example files (input, output)

2. Tesseract does not accept pdf (it needs an image as input), so at least 3. seems to be a problem of OCRmyPDF. 

Provide also the output of "tesseract --version" command

Zdenko

po 3. 7. 2023 o 21:24 Filippos Koliopanos <kro...@gmail.com> napísal(a):

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