PROBLEM-SOLVING GUIDE ·
How to Straighten a Skewed Document Photo
Use document corners to correct perspective, compare color and grayscale exports and preserve readable text.
Understand the problem
A photographed sheet may look trapezoidal or slanted. Perspective correction works by selecting its four corners accurately, but it cannot reconstruct text that was blurred during capture.
How to solve it
Retake the picture if it is blurry or shadowed
Place the paper flat in good light and point the camera toward it. A sharp, evenly lit source will usually be easier to correct than a blurred photo.
Set the four paper corners carefully
Identify the top-left, top-right, bottom-right and bottom-left points. Drag the selectors to the actual page edges rather than including the surrounding table.
Compare color and black-and-white results
Use color if stamps or highlighting matter. Threshold-based black-and-white output can erase faint text, so inspect the final saved file before submitting it.
Another way to do this
When the method may not work
The tool cannot restore blurred text or remove all glare. Official submissions may have file-format and resolution rules that you still need to check.
Frequently asked questions
Why does black-and-white conversion remove some letters?
Faint text can fall below the selected brightness threshold. Try the color or grayscale mode and compare the output with your original photo.