How can I straighten scanned PDF pages in Adobe Acrobat DC?
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Use the "Enhance Scans" function (just search for "scan" in Acrobat's tool search). You then have to select that you want to enhance a scanned document:
And then select to edit the Settings:
Now you can adjust the filters. One of the available filters is "Deskew", which will straighten the scanned pages.
Dear Karl Heinz,
Can you help me out, as this solution does not work. I am using Acrobat Pro DC
Yes the option to deskew is there, but nothing happens.
Please see below example
Page is still skewed, text is recognized (even when this was specifically ticked-off)...
And it absolutely destroyed the page?
Am I doing something wrong?
Without access to the file in question, it's impossible to say why it is not working. I know that it worked for me yesterday, when I straightened a skewed scan. The skew angle was similar to what's in your document. Maybe there is not enough text on your page?
Hi Karl or any other Adobe Pro expert,
I’m sorry but your reply is not helping..
What is having not enough text on your page have to do with deskewing a page?
And can you specify “not enough” text?
And as an additional problem, adobe tried to recognize the original text of the scan, by adding the same text as a layer under the scanned text.. making both texts virtually unreadable and its looking sloppy and low quality overall.
I Hope you can help me out, because otherwise the main reason I purchased Acrobat pro is lost and will have to do without it..
Acrobat needs something to figure out by how much a page is skewed. The best way to do that is by looking how text behaves in your document. If all text is going "up hill", then it's pretty obvious that you have a skew and Acrobat can then determine the angle and correct for that. Without knowing how exactly Acrobat determines the skew angle, it's impossible to say what exactly is causing this problem. Only Adobe would be in a position to give a definitive answer. I am just making assumptions about it's internal behavior based on what I've seen.
There are two or three different output modes you can use with OCR (how many depends on how you start the OCR process): You should have searchable image (potentially with the "exact" option) and editable text and images. Do you see a difference in the output quality between the two? I assume you are using the "editable text and images" option (otherwise Acrobat should not modify the content of your page).
Would you be able to share the original PDF file? If you don't want to share publicly, you can email it to me directly - my contact information is on my profile page (click on my name in blue just above this comment).
Karl, I'm still using Acrobat Pro 9.5.5 alongside Pro DC. Acrobat 9.5.5's OCR/straighten has always worked wonderfully but they somehow lost it in DC. DC changes the font, makes OCR mistakes, moves things around page and frequently leaves the PDF file unusable. I like a lot of DC's features like organize but revert back to 9.5.5 to OCR/straighten. I simply can't use that function in DC. Hopefully Adobe will get back to where they were. Bill
Are there any straighten/deskew options available with the basic free version of Adobe Acrobat Reader DC? I went to add "Enhance" and it opened another window giving me options for how I wanted to pay for/upgrade my Adobe.
for single PDF's this works great but for batch processing these settings do not exist, or did i miss this somewhere?
It worked for me on a 40-page ebook, but lost a little clarity, esp. in decorative borders. This was not DC.
I have the same problem. I have the correct settings but I get zero results when using the enhance scan function.
I experienced the same problem, deskew did not work and I had a full page of text.
Me three -- same problem I'm having. The deskew doesn't change the scanned image, even when it is a full-page text document.
Document I received was very skewed and as "micha-elv8353385" in this thread & this tutorial: Straighten and Deskew PDF Pages in Acrobat XI (adobe.com) had mentioned, this method did not work for me as well.
But "Recognize Text" deskewed it for me under Tools -> Text Recognition -> In This File:
Hope it helps someone.
Exactly. With little text and no clear lines the program apparently has little to work with and the results will reflect as much. Turning on "Recognize Text" generally works to solve any problems.
That page has about 10 parallel lines; I'm amazed the Enhanced Scan de-skew feature is so stupid that it needs more help than that.
Thank goodness "Recognize Text" is smarter.
Thank you! This method finally worked for me.
This worked perfectly for me! Thank you!
Karl's answer is correct, but incomplete. After choosing the Enhance settings, select the Recognize Text menu and click the blue "Recognize Text" button. This executes the optical character recognition. Each page in the document will be converted to OCR and then rotated to deskew the page. (I am using Acrobat Pro DC on 4/14/19).
How is this remotely acceptible?
This disaster piece of malware is on version 20(?) and is generations behind the simplest free iPhone apps.
FYI, I finally fixed my skewed scan by following the instructions for straightening an image (and I'm using free trial rn of Adobe DC). After edit, it automatically selected the text as one object and the image as another. Upon right clicking it fixed the skewing. The second one I opened and edited, it fixed them without me doing anything.
How is it possible that this is so mush worse than older versions of Adobe Pro? What am I paying for??
If I use deskew (with or without text recognition), my document is completely unusable. Did anyone test this?