How to save a PDF again to PDF (without do nothing)?

Hello friends,

I need some help.

Final Goal: PDF reading (text extraction)

My problem: I need to open the PDF and save it again on my machine (replacing it) so that it can be converted to text.

Background: I have a folder with approximately 300 PDFs. These PDFs were downloaded from an email inbox.

When I open each of the PDFs, I usually use Google Chrome for viewing. Apparently, when I view the PDF, it is in OCR format, but Google Chrome allows text selection.

When I create a workflow in Knime to read the PDF, using Tika Parse or PDF Parser, Knime cannot recognize the text. It’s as if it were an OCR.

However, when I open the file in Google Chrome, click the printer icon, and save it again (replacing the file), some type of conversion occurs.

When I return to Knime, the nodes recognize the text.

My problem: I would have to open 300 PDFs, one by one, to save and replace them.

My options:

1.

Use some type of automation to do this work. (Power Automate)

1.

Use Knime to do this work.

My question is: Is there a way within Knime to identify the PDF, transform it into Binary Objects to File, and save new files? Perhaps by doing this, I could check if the newly saved file will be in a text format that I can read.

PS: I cannot provide the files as text because they are confidential.

I will provide some screenshots.

Folder with a lot of PDFs

1- Testing with type similar to OCR ❌

2-Converting to New File

Save new file again

New file replace

Re-workflow :whitecheckmark: