Wrongly oriented photos
When an image appears sideways depending on which program opens it, rotating and saving fixes the orientation for good.
Rotate or flip an image.
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Rotating and flipping are two different transformations that often get confused. Rotating turns the image by an angle; flipping mirrors it, horizontally or vertically. The visual result can look similar, but it is not the same.
The most common case is a photo that appears sideways. Cameras store orientation as separate data, and not every program reads it the same way: the same image can look right on a phone and lie on its side on a computer. Genuinely rotating it and saving solves the problem everywhere.
Horizontal flipping has one very practical use: correcting front-camera photos, which many phones save mirrored, making any text read backwards.
When an image appears sideways depending on which program opens it, rotating and saving fixes the orientation for good.
The front camera mirrors the image. A horizontal flip restores text to reading order.
A sheet that went into the scanner rotated is straightened without repeating the capture.
Yes, you can apply both effects in the same pass: rotation happens first, then flipping.
Rotating 90° or 270° swaps width and height, so the resulting image dimensions differ from the original.