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How to rotate photos in bulk on a Mac
By Himanshu Ranjan · Updated 8 November 2026
To rotate many photos on a Mac, select them in Finder, Control-click and choose Quick Actions > Rotate Left, holding Option for Rotate Right. In FileDial, run Adjust › Rotate left or Adjust › Rotate right on the whole selection and get a new copy of each. Both run locally.
The quick answer with Finder
Apple's Finder help describes this directly. Control-click a file in Finder, choose Quick Actions, then Rotate Left. To rotate right, hold the Option key and choose Rotate Right. You can select several images first and the action applies to all of them. If the Quick Actions menu is missing options, the same page says you can use the buttons at the bottom of the Preview pane, which appears when you choose View > Show Preview.
One thing to know: Quick Actions work in place on the file you act on, so the original is changed. That is fine for fixing a sideways phone shot, and less fine if you want a record of the unrotated file.
Rotating with FileDial
FileDial's two tools do the same job but write a new copy beside the original, the original stays as it was, and Undo is on every result. That suits batches where you are not sure every picture needs the same turn.
- Select the photos in Finder.
- Hold the right Option key to open the dial, or right-click and choose Open in FileDial.
- Choose Adjust, then release on Adjust › Rotate left or Adjust › Rotate right.
- Open the new copies and check the orientation. Use Undo to roll back the batch.
Why photos show up sideways
Cameras and phones usually record an orientation flag in the file's Exif metadata instead of rotating the pixels. Wikipedia lists orientation among the fields Exif stores. Apps that honour the flag show the picture upright, and apps that ignore it show it sideways. That is why a photo can look right in Preview and wrong on a web page or in an older tool.
Rotating with a proper tool fixes the file for every viewer. If you are rotating just to correct for the viewer, make sure you are not turning an already-correct picture into a wrong one in another app.
Mixed batches and Preview
If half your photos need left and half need right, do two runs: select the left-turn group first, then the right-turn group. In Preview you can also rotate within the Markup toolbar, as Apple describes: click the Rotate Left tool, and hold Option and click for Rotate Right, one image at a time in the sidebar.
For small angle fixes, such as straightening a horizon by two degrees, 90-degree rotation is the wrong tool. Use Adjust › Crop and rotate… for free-angle work.
- Quick Actions: fast, in place, built in.
- Preview: good for a handful of files.
- FileDial: batch, copies beside originals, Undo.
Sorting out a mixed pile
Phone and camera imports often arrive as a mixed pile: some upright, some on their side, some upside down. The fastest approach is to switch Finder to Gallery view, which shows a large preview and a filmstrip, then Command-click all the sideways ones that need the same turn. Run the rotation on that group, then repeat for the next group.
Be careful with files that look right in Finder but not elsewhere. Those usually rely on an orientation flag rather than a rotated pixel grid. Rotating them in a tool that only flips the flag, or that ignores it, can make the problem worse. After a batch, open two or three results in a different app to confirm they look upright everywhere, especially before uploading a set to a website or print service.
Rotating by quarter turns is lossless in principle for some formats, but not every tool does it that way, so keep the originals until you have checked the results. FileDial writes copies, so you can compare.
- Use Gallery view to group by needed turn.
- Confirm in a second app.
- Keep originals until checked.
When each option fits
Quick Actions are the best first try: built in, fast and fine for a few files, with the caveat that they change the files themselves. Preview suits a handful of images where you also want to check each one. FileDial fits when you want copies, many files at once and an Undo if the batch goes wrong.
The mistake to avoid is rotating files that already display correctly in your app but sideways elsewhere, without checking where the problem appears. Look at the file in a second viewer first. And do not use quarter-turn rotation for small tilts. A horizon that is off by a couple of degrees needs a free-angle tool, not a 90 degree turn.
Offline by default
Rotation does not need the internet and neither do FileDial's tools. Files are never uploaded.
Questions
Can I rotate multiple photos at once in Finder?
Yes. Select the images, Control-click, choose Quick Actions, then Rotate Left, or hold Option for Rotate Right. Apple's Finder help describes the steps. Note that this changes the files in place, so copy them first if you want to keep unrotated originals.
Why is my photo sideways in some apps and not others?
Cameras often store orientation as an Exif flag rather than rotating the pixels. Apps that read the flag display the photo upright, while others ignore it. Rotating the image properly makes the file look the same everywhere. A viewer that ignores the Exif orientation flag, such as some web uploaders, will show the unrotated pixels.
Does FileDial overwrite the originals when rotating?
No. Adjust › Rotate left and Adjust › Rotate right save a new copy beside the original, and the original is not changed unless a tool says so up front. Each result also has Undo. Rotating the actual pixels means viewers that ignore the Exif orientation flag still show the picture upright.
How do I rotate by a few degrees?
Use Adjust › Crop and rotate…, which supports free or fixed ratios and saves a new copy. The Rotate left and right tools turn the image by quarter turns only, so they cannot straighten a slightly tilted horizon. Quarter-turn tools cannot fix a slight tilt, so use Adjust › Crop and rotate… for a few degrees.