You take a portrait photo, upload it to a website, and it shows up lying on its side. Or you need to flip a selfie so the text on a shirt reads correctly. Both problems are about image orientation, and both are easy to fix.
Rotate vs flip: what’s the difference?
- Rotate turns the image around, typically in 90-degree steps. A rotation changes which edge is the top.
- Flip (or mirror) creates a reflection, either left to right (horizontal) or top to bottom (vertical). Text becomes backwards.
Use rotate for a sideways photo. Use flip when you want a mirror image, such as correcting a selfie.
Why photos show up sideways
Phones and cameras don’t always turn the pixels when you take a portrait photo. Instead, they save the picture in the sensor’s native orientation and add a small note, the EXIF orientation tag, saying “display this rotated.” Software that reads the note shows it upright. Software that ignores it, like some websites, upload forms and older programs, shows it sideways. We cover that tag in what is EXIF data.
The permanent fix
Rotate the picture properly and save it, so the pixels themselves are upright and no tag is needed. After that, every program will display it correctly. Open the photo in an editor or online tool, rotate it until it looks right, and export a new copy.
How to rotate on your device
- Windows: in the Photos app, use the rotate button or press Ctrl + R. In Paint, use Rotate in the Image group.
- Mac: in Preview, click the Rotate button in the toolbar, or press Cmd + R. Flip is under Tools > Flip Horizontal or Flip Vertical.
- iPhone and Android: open the photo in edit mode and use the crop or rotate controls. See resizing on your phone.
Does rotating reduce quality?
Rotating by exact 90-degree steps doesn’t lose any detail if the software does it properly, because the pixels are just rearranged. Some programs re-compress JPGs when saving, which causes a small loss. Rotating by odd angles, like 3 degrees to fix a crooked horizon, requires resampling, which slightly softens the image and also trims the corners. For general quality advice, see resizing without losing quality.
Straightening a crooked photo
Use the straighten or angle slider in a photo editor. Pick a line that should be level, like a horizon or a doorframe, and nudge the angle until it is. The editor crops in to remove the empty corners.
Rotating before resizing
If you’re preparing images to upload, fix the orientation first, then resize. A resizer that ignores the orientation tag could produce a sideways file. Check the result before uploading. If it’s wrong, rotate, then export again.
When to flip on purpose
- Fix a selfie where text appears reversed
- Match the direction of a subject in a layout, for example facing toward the text
- Create symmetrical designs
Be careful flipping photos with writing or logos, since the text becomes backwards.
Fix and resize in the same place using our free online image resizer.