Nowadays, it’s crucial to have all your hardcopy information stored digitally as well. Flooding, house fires, simple carelessness, all these are threats to books, transcripts and other paper you have stored away or lying around. Furthermore, many departments and offices nowadays require you to hand in forms and proofs digitally.
A-PDF Deskew provides a quick way to correct the skew scanned image in Acrobat PDF documents directly. It detects tilt images and straightens them automatically. A-PDF Deskews features include. Your cursor will change to a crosshair. By default this button is not in any toolbars. To learn how to add it to a toolbar, see Customizing Toolbars. Click two points on a line that should be horizontal in the PDF. The Page Setup dialog box will reappear with a preview of the. Deskew PDF Pages. One of the most common problems with scanned pages is that they are are skewed by a couple degrees, which can be annoying and unpleasant to the viewer. It can also cause problems with processes such as Optical Character Recognition (OCR).
So what do you do if you have a certain document in print only? What if you want to use a large quote from a printed book? Or pictures from an illustrated book? Then, you have to scan the paper, document or book.
Most scanners help you to angle your document, but even when using the document feeder, your scan may come out crooked. Don’t you worry, we have a solution for you: de-skew your scans!
Fix Crooked Scans
Using OCR, it’s very easy to extract text from a scanned page of a book. But what if your paper was moved while scanning or the pages of a larger book didn’t come out all straight as you need them to?
Find out more about Optical Character Recognition.
A function of the Online-Convert.com PDF converter can help you with this. The “deskew” option makes sure that the text of your scanned page is aligned neatly and gets rid of black lines that usually accompany crooked scans. Before we jump into the quick tutorial, however, let’s have a look at the results of a deskew conversion.
What Does Deskew Do?
To show what the process of deskewing looks like, check out the table below. It shows one of the Online-Convert.com test files that have been scanned slightly crooked. The black lines on the left side of the scan are the clearest indication of the crookedness, alongside with the text. After deskew, you can see a big, visual improvement.
The images are taken from screenshots of the PDF files opened in Adobe Reader.
| Crooked Scan | After Deskew |
How To Fix A Crooked Scan?
Here’s what you need to deskew your scan:
There are only two things you need to deskew your photos:
Free Online Pdf Deskew
- the scan (usually a PDF or JPG file)
- a PDF converter
1. Upload your document
Simply upload your document from your hard drive. You can also provide a link or use any document saved on Dropbox or Google Drive.
2. Check “Deskew”
In the box that shows the optional settings for a PDF conversion, you can find the “Deskew” option. Just tick the box.
3. Convert your file
All that is left to do is to click on “Convert file“. The rest will be handled by Online-Convert.com. Depending on your browser, the fixed document will be automatically downloaded on the next page. If not, save it manually.
Online Pdf Deskew
How to deskew or despeckle PDF document and publish online in Mac OS X
You can use VeryPDF Table Extractor OCR to deskew PDF which is skew less than 15 degree and despeckle PDF document which is full of speckles in both on Mac OS X system and Windows system. The operations and interfaces of these two versions are the same. This page aims at showing how to deskew or despecle PDF document and then publishing to VeryPDF service in Windows system.
You can download Mac OS X version or Windows version according to your needs. Then please install and open the application in your Macintosh please.
When you input the skew or speckled PDF document, please click Open button in the toolbar to open file picker window and then choose the one you need. In addition, this application supports drag and drop operations for adding PDF.
All pages of input PDF document will be shown in left preview panel. If you click on any page, the selected page will be shown in middle panel. For example, there is a skew PDF document with some speckles and you need to deskew and despeckle this PDF. Please click the arrow button besides OCR in the toolbar. Then the small window like the one shown in Figure 1 will come out.
Fig 1
In Threshold group box, you can drag the scrolling bar to adjust the black or white degree of pixels in input file. In Rotation group box, you can use Auto Deskew button to deskew PDF document. Or you can click Draw a line to Rotate, Clockwise 90 or Counterclockwise 90 to rotate the input document. In the following spin box, you can manually input angle degree according to your needs and then click the button besides to rotate. (Note: Positive number is to rotate clockwise and negative number is to rotate anticlockwise.)
In Clean group box, you can click Despeckle button to despeckle PDF document. Or you can click File with White button to fill some characters with white color. After that, please click Apply button. If you need to cancel all operations before, please click Revert button.
Fig 2
Fig 3
The snapshots in Figure 2 and Figure 3 show the comparison between original PDF and worked PDF.
At last, you can publish the PDF document to VeryPDF server by clicking Publish button and then a window for inputting user name and password will come out. Please input your information and click Log in button. Please input the title, keywords, description and index name for your document and then click Upload button. Please see it in Figure 4.
Fig 4
The same operations are adaptive in Windows system if you are using Windows version.