Convert Image PDF to PDF with text or other ebook format.

Memes · 05-25-2017, 04:18 PM

Hello,

I have been lurking these forums for a few months now, and I'm proud to say I have finally joined the ranks as someone who reads on an e-ink display!

It's great I'm not wasting my phone battery or hunched over my laptop anymore.

However, most of my books I wish to read are books about the game of go.

What I want to do is take my PDFs and convert them to PDFs with text. (instead of an image on each page its text and an image)

This will make the text available for me to highlight and make notes (I own a kindle paperwhite) and will make it easier for me to format using k2pdfopt. (when I try to reflow a PDF it makes the diagram text below a diagram unreadable because it's so small)

Here is an example of what I'm working with:

http://imgur.com/a/18fPm

Thank you very much for you time and I'm sorry if this question was already answered.

P.S. I don't want to extract only the text I want to keep the whole of the document.

willus · 05-26-2017, 09:51 PM

Quote:

Originally Posted by Memes

What I want to do is take my PDFs and convert them to PDFs with text. (instead of an image on each page its text and an image)

You can do this with k2pdfopt if you also install the Tesseract OCR portion of it:

Code:

k2pdfopt -mode copy -n- -ocr t -odpi 100 -as go.pdf

See attachments as example. The -as applies auto-straighten since your image is slightly skewed.

MarjaE · 06-02-2017, 07:31 PM

I usually use Elucidate. It's a Mac front-end for Tesseract.

However, Tesseract sometimes drops the first letters from words, or reads things in the wrong order. I can't select an entry from a table of contents, to check it in my translation software, because it selects the next page, and inserts that into the entry...

Memes · 06-09-2017, 03:27 PM

Quote:

Originally Posted by willus

You can do this with k2pdfopt if you also install the Tesseract OCR portion of it:

Code:

k2pdfopt -mode copy -n- -ocr t -odpi 100 -as go.pdf

See attachments as example. The -as applies auto-straighten since your image is slightly skewed.

Is the code you posted to be run from a command line in Linux? I am currently running Windows.

DaleDe · 06-10-2017, 03:01 PM

Quote:

Originally Posted by Memes

Is the code you posted to be run from a command line in Linux? I am currently running Windows.

Open a CMD window and use it to type in the command. You could also make a .bat file with the code using a text editor and then tap the bat file.

Dale

willus · 06-10-2017, 11:47 PM

Or you can use the MS Windows GUI:

1. Under conversion mode, select "copy"
2. Check the autostraighten box
3. Check the OCR box
4. Uncheck the native output box
5. Set the output DPI as desired

if you do all this, the auto-generated command-line options should mostly look like what I put in my previous post.

Memes · 06-16-2017, 03:29 AM

Thank you everyone very much for your help and your time I really appreciate it!

unlocked2412 · 05-01-2023, 04:52 PM

Quote:

Originally Posted by willus

You can do this with k2pdfopt if you also install the Tesseract OCR portion of it:

Code:

k2pdfopt -mode copy -n- -ocr t -odpi 100 -as go.pdf

See attachments as example. The -as applies auto-straighten since your image is slightly skewed.

Thank you @willus for this wonderful tool !!

05-25-2017, 04:18 PM	#1
Memes Junior Member Posts: 3 Karma: 31958 Join Date: Apr 2017 Device: Kindle PW3	Convert Image PDF to PDF with text or other ebook format. Hello, I have been lurking these forums for a few months now, and I'm proud to say I have finally joined the ranks as someone who reads on an e-ink display! It's great I'm not wasting my phone battery or hunched over my laptop anymore. However, most of my books I wish to read are books about the game of go. What I want to do is take my PDFs and convert them to PDFs with text. (instead of an image on each page its text and an image) This will make the text available for me to highlight and make notes (I own a kindle paperwhite) and will make it easier for me to format using k2pdfopt. (when I try to reflow a PDF it makes the diagram text below a diagram unreadable because it's so small) Here is an example of what I'm working with: http://imgur.com/a/18fPm Thank you very much for you time and I'm sorry if this question was already answered. P.S. I don't want to extract only the text I want to keep the whole of the document. Last edited by Memes; 05-25-2017 at 04:20 PM.

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06-02-2017, 07:31 PM	#3
MarjaE Guru Posts: 924 Karma: 53902736 Join Date: Jun 2015 Device: multiple	I usually use Elucidate. It's a Mac front-end for Tesseract. However, Tesseract sometimes drops the first letters from words, or reads things in the wrong order. I can't select an entry from a table of contents, to check it in my translation software, because it selects the next page, and inserts that into the entry...

06-10-2017, 11:47 PM	#6
willus Fuzzball, the purple cat Posts: 1,272 Karma: 11087488 Join Date: Jun 2011 Location: California Device: iPad	Or you can use the MS Windows GUI: 1. Under conversion mode, select "copy" 2. Check the autostraighten box 3. Check the OCR box 4. Uncheck the native output box 5. Set the output DPI as desired if you do all this, the auto-generated command-line options should mostly look like what I put in my previous post.

06-16-2017, 03:29 AM	#7
Memes Junior Member Posts: 3 Karma: 31958 Join Date: Apr 2017 Device: Kindle PW3	Thank you everyone very much for your help and your time I really appreciate it!