Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is there a way to automatically rotate/align scanned images so they are perfect 90 degrees.

For instance, you scan an image it's slightly crooked, like 88 degrees but the image is rectangular, so you have to modify it manually. Does Photoshop have inherent intelligence to auto-correct? Snap to perfect 90 degree fit?

share|improve this question

migrated from Jun 8 '11 at 16:48

This question came from our site for professional and enthusiast programmers.

I suspect this will actually be very difficult to achieve because unless you are taking photographs of static objects where very little changes (for example in a Photo Tent) the images you will then ultimately be scanning will be too varied to apply any sort of firm rules of how they should be aligned.

However, there is a sort of Macro / Action function in Photoshop that will allow you to perform an automated task. This may help in some way.

Check out:

share|improve this answer
I just discovered it - It shares space with the eyedropper. Tape Measure. You drag a line with it parallel to your 'skewed' line. Then choose canvas rotate/arbitrary and it automatically calculates the distance to rotate to make the image straight. – user789411 Jun 8 '11 at 16:01

Yes. Use the ruler tool, then choose Rotate Image... Arbitrary. The correct rotation will automatically be entered.

Got this from:

share|improve this answer

Intelligent auto-correction may not be as versatile as you wish in Photoshop however you have Photomerge ! Although it's pretty tough if you are doing it for the first time, you'll soon get hang of it. This PDF explains it in great detail : .

Another brilliant resource that you might wanna take a peek at is: I think the PDF will be more than helpful to you. It'll even explain to you the concepts in great detail ! Hope I helped.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.