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53 votes
Accepted

How to create PDF with scanned pages but selectable text?

This has (contrary to some other answers here) most probably nothing to do with Acrobat at all. Most (all?!) professional document scanners and most semi-professional ones will automatically perform ...
  • 4,482
35 votes
Accepted

Blurry text in PDF

This is a raster layer which, unfortunately, also contains text. Arguably the simplest way to fix such PDF would be to use ABBYY FineReader (commercial, works on Windows, Linux, mac OS). A PDF or ...
  • 752
19 votes

Blurry text in PDF

The text has been rasterised - turned into 'dots'. It should still be vector - using actual fonts which are drawn live to screen. This could be because the document was scanned and is effectively just ...
  • 43.1k
11 votes

How to remove OCR from a PDF?

In Acrobat Pro DC, the appropriate command is "Remove Hidden Information," which is available through both the "Protect" and "Redact" tools. On running the command, it just searches out the hidden ...
11 votes

Enable OCR in Greenshot

For those of you who for some reason or another can't/won't install SharePoint Designer, I've found a nice alternative solution, using the FOSS Capture2Text. The software comes with both a GUI and a ...
11 votes

How to create PDF with scanned pages but selectable text?

But how is this possible? Basically, a program performs OCR on the input file and then it places an invisible layer of text over the picture. Alternatively, it might also place a visible layer of ...
8 votes

Blurry text in PDF

There's another possibility for the cause of the blurriness: A filter layer placed above the scanned raster layer. I worked in a place some years ago that had document scanners in the network. You ...
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7 votes

How to extract text with OCR from a PDF on Linux?

Best and easyest way out there is to use pypdfocr it doesn't change the pdf pypdfocr your_document.pdf At the end you will have another your_document_ocr.pdf the way you want it with searchable text....
7 votes

Understanding OCR options in Adobe Acrobat: "Searchable Image", "Searchable Image (Exact)", and "Editable Text and Images"

The Adobe Help article Scan a paper document to PDF, section Recognize Text - General Settings dialog box, defines the scan modes as : Searchable Image Ensures that text is searchable and ...
  • 431k
6 votes

Batch OCR for many PDF files (not already OCRed)?

tl;dr? Start with Nuance PowerPDF Advanced. I evaluated OCR software in Dec 2014 in prep for a big project - OCR on millions of English-language pages done in batches. If you're willing to spend a ...
6 votes
Accepted

Enable OCR in Greenshot

Enable OCR in Greenshot How can I use Greenshot for OCR? For the Greenshot OCR (Optical Character Recognition) plug-in to work we are depending on a component from Microsoft called MODI (Microsoft ...
6 votes

How to effectively scan 130,000 paper pages in 10 days

If you simply need facsimiles of these and do not care so much about perfect presentation, consider a camera attached to a vertical copy stand. Guaranteed not to jam, easily adjusted for different ...
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5 votes
Accepted

How to extract Unicode character from .png file?

Is there any option to extract Unicode script? When I try it for Unicode like Hindi, Marathi, or Devanagari Script it produces the wrong output. It appears that only Hindi is supported out of the ...
  • 149k
5 votes

Enable OCR in Greenshot

You also need to install MODI (Microsoft Office Document Imaging) Go on following page and execute method 2 (this worked for me) https://support.microsoft.com/en-us/help/982760/install-modi-for-use-...
  • 51
5 votes

How to effectively scan 130,000 paper pages in 10 days

I can't answer what scanner to get, I can however speak from experience as an ex-worker who prepared, scanned and archived documents of all shapes and sizes that paper is rarely fragile and any tears ...
5 votes

How to leave pdf image unchanged while adding OCR to a pdf with pdfsandwich?

I contacted Tobial Elze, the creator of pdfsandwich, with my question. Here is their response: I'm fully aware of what you mean and I agree that this would be a useful feature. It is currently ...
4 votes
Accepted

Copy pdf text layer to another pdf

Here's a simple shell script to do this on the command-line: Save this as ~/pdf-merge-text.sh (and chmod +x it): #!/usr/bin/env bash set -eu pdf_merge_text() { local txtpdf; txtpdf="$1"...
  • 23.4k
4 votes

Enable OCR in Greenshot

The new way is to just save an image with Greenshot, then copy and paste into OneNote, right click the image, Copy Text from Picture, then paste OCRed text. http://answers.microsoft.com/en-us/...
4 votes

How to create PDF with scanned pages but selectable text?

This is possibly because of a Acrobat OCR feature: Acrobat can recognize text in any PDF or image file in dozens of languages. All you have to do is open the scanned document or image that you'...
  • 15.4k
4 votes
Accepted

ffprobe OCR of a subtitle stream

Image-based subtitles are a hybrid media type, they contain video data but are designated as subtitles. Almost all ffmpeg code expects actual stream data to be of the type they are indicated as. So, ...
  • 33k
3 votes
Accepted

How to make OCR recognize this image

The images are too small for it to properly work. I took your images and simply scaled them up to a height of 50px (constant resolution) and ran tesseract input output -psm 7 My output resulted in ...
  • 20.8k
3 votes

How to remove OCR from a PDF?

In Acrobat Pro: use 'remove hidden information' (under 'protection'). Select all, execute, OCR is gone
  • 31
3 votes

How to remove OCR from a PDF?

If, as you say, the documents are scanned and not printed to PDF from Word for example, you can easily remove with your Adobe: Select Document, Examine Document and now you can remove the hidden text (...
  • 31
3 votes

Adobe could not perform recognition: This page is larger than the maximum page size of 45 inches by 45 inches

An absolutely legitimate question. The primary workaround is opening the scanned document in an image editor (Photoshop, theGIMP, etc.) and increase the resolution. This will NOT lead to a scaling, ...
  • 1,564
3 votes

How to effectively scan 130,000 paper pages in 10 days

A few thoughts on removing staples For standard document scanners you need to remove staples. If the paper edge next to the staple does not contain any information you could consider to just cut ...
3 votes

How to create PDF with scanned pages but selectable text?

From Adobe's website Recognize text in a Scanned PDF file When you scan paper documents to PDF, you’re really just taking pictures of those documents. That’s great for photos and other ...
3 votes

ffprobe OCR of a subtitle stream

Yes, there is a new way. If you like, you can try out an upcoming addition to ffmpeg which provides the capability for processing subtitles in filter graphs. Currently available here: https://github....
2 votes

How to extract text with OCR from a PDF on Linux?

Asprise OCR Library works on most versions of Linux. It can take PDF input and output as search PDF. It's a commercial package. Download a free copy of Asprise OCR SDK for Linux here and run it this ...
2 votes

How to automatically find non-searchable PDFs

I will use a trick, it is a peculiar secondary fact I noticed if a pdf file doesn't have any font it is usually not searchable. So knowing this we can use pdffonts. First 2 lines of the pdffonts are ...
2 votes

How to search a PDF where text is just image?

You can use the free spaceOCR online ocr tool. It can convert any PDF into a searchable PDF: Upload your PDF and select the OCR language A few seconds later you can download the new version of the ...
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