Straighten Your Photos with Photoshop
If your photos are unintentionally crooked, they can look very distracting. There’s lots of contributing factors including a crooked tripod, shooting handheld, or just an uneven surface. But solving the problem is really easy.
In Photoshop, select the Ruler Tool (I).
Locate a line or surface that you think should be horizontal (or vertical).
Click and drag a line to measure the angle.
In the Options bar click the Straighten button.
The correct value is used to rotate the image. Depending on your version of Photoshop, it may be automatically cropped to avoid any gaps at the edges. You can also manually crop.
OMG! How did I not know this tool was there? THANK YOU! Oh, I shall not swell on how many times I’ve straightened things by rotating them back and forth….sigh…