The LEADTOOLS OCR application can perform Optical Character Recognition on images, extract text from scanned documents, convert images to PDF. This application is built using the LEADTOOLS OCR Advantage SDK. This is one of the sample applications that is shipped with LEADTOOLS, the award-winning SDK for programmers. The LEADTOOLS sample apps are intended to show developers some of the capabilities they can integrate into their own applications. For more information visit:

Available on



mobile device

mobile device

Version notes

Version number:

Fixed some problems loading specific types of PDF. Improved the OCR engine results.


  • OCR scanned documents
  • Convert images to text
  • Export recognition results as PDF
  • Supports single and multipage files
  • Recognize single page, all pages, or user defined zones

System Requirements

OS Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1
Architecture ARM, x86, x64
OS Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1
Architecture ARM, x86, x64

Additional info

Published by
LEAD Technologies Inc.
Copyright © 2017 All Rights Reserved. LEAD Technologies, Inc.

Approximate download size
59.31 MB - 69.04 MB


This app can
Use your rear- or front-facing camera
Use your webcam
Use your device network services
Use your music
Use the media items that are currently playing
Use any of your Windows Phone sensors
Access your browser
Use the photos in your media library

Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.

Language supported
English (United States)

Publisher Info
Publisher Website
Publisher Support

Ratings and reviews

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Platform: PC

Works ok!

You must begin with a PDF that is properly rotated / oriented. It would be nice if the app commands were constantly visible. They disappear for some reason.




Platform: PC

Great tool for converting image PDF to text PDF

This app does exactly what I need. I create a PDF with my scanner using the Microsoft SCAN app. I then launch LEADTOOLS OCH app, load my PDF, then tell it to recognize text on all pages. Because there were images in the scanned document I needed to check the "Image over Text" option. When the OCR app finishes the entire document it prompts me for a new file name (to save the resulting OCR'd doc). For the few documents that I've done, it's performed flawlessly. Easy Peazy. As another reviewer pointed out, the UI is kind of difficult to figure out. You need to do a right-click anywhere in the app for the single menu bar to appear. Once you get the hang of it, it's all roses.

8 out of 8 people found this helpful.




Platform: PC

Too many CLICKS, no options or settings

First you have to click the top right corner for a pull-down, to click another button to pull up the bottom pop-up button bar THEN you can click the action that you want. Then the button bar disappears again. Why? Three clicks needed for a one click action. Stupid. First couple of passes didn't go so well. There are no options for quality of final results. Sometimes good...sometimes um...




Platform: PC

Good but could save the text to a document

It could save multiple pages to a single document instead of having to copy and paste the extracted text to a document it will convert most text from scanned photo to text.

2 out of 2 people found this helpful.




Platform: PC


It's hard to find a trustworthy app that actually works with little to NO problems. LEADTOOLS is exactly that! The app is dependable whenever I need it and is one of the main parts in my PC Tool Box. It has NEVER malfunctioned and I'm GRATFUL!.. KEEP UP THE GOOD WORK GUYS! My LeadTools wish; To have a PDF to JPG feature. Best Regards, Anjei

4 out of 5 people found this helpful.




Platform: PC

Text Extract

I scanned a book I love but this OCR tool still had errors so I will have to edit the text. I was trying to get it to scan the book to pdf so I could upload the book to a pdf voice reader to listen to it on the road. Doesn't do a perfect job but it is better than trying to type the entire book in manually!

3 out of 4 people found this helpful.




Platform: PC

Works really well!

This picked up text from a really low dpi scan. There were some errors, but it even read the text that was sideways.

One person found this helpful.




Platform: PC

Basic OCR for free.

Scanning picks up the words and letters without much confusion, but isn't smart about language. In my test, "were a" was scanned as "werea"). Occasionally, the letters "rn" come out as "m". The product gets the forms of letters and words mostly right, but doesn't seem to have any dictionary-connected intelligence that would allow it to deal better with justified text, variable spacing, and variations in point size. Boldface and italics get lost, too. The only output option is select and copy from the output area into whatever word processor is handy; one would think there would be at least an option to output to Wordpad or Rich Text, but there is none. On the plus side, it did correctly scan text that was in two columns, and does provide a basic area selection capability. Bottom line, it's OK for pulling raw unformatted text from an image, just plan to spend some extra time making minor corrections.




Platform: PC

What am I doing? ok... got it

REVSED...OK, think I got it figured out. And now I like it. I have no idea what this is doing. I ask it to recognize, it starts then stops. If I can get it to work, then what? Can't edit in the right hand box. can't save as editable, I have no idea how to use this.

3 out of 8 people found this helpful.




Platform: PC

Unable to delete or use USB

I am unable to delete this program since it is not listed in Uninstall. Also when I double click a list on my USB I get this program and am unable to open my listing on USB to edit. I am either missing something or something is not right with the program.

8 out of 14 people found this helpful.



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