I need to free up storage on my iPhone by deleting photos, but I want them to remain safely stored in iCloud. Since iCloud Photos syncs deletions across devices, what’s the best way to remove local copies without losing the originals?
If you want to keep using iCloud Photos, use Optimize iPhone Storage. If you want the photos completely removed from the phone, you have to stop syncing that iPhone first.
For the usual setup, go to Settings > your name > iCloud > Photos, leave Sync this iPhone enabled, and select Optimize iPhone Storage. Full-resolution originals stay in iCloud while the phone keeps smaller versions and downloads originals when needed. It may take some time to reclaim space, especially if the phone is not connected to Wi-Fi and power. You cannot manually choose individual photos to offload while keeping iCloud Photos syncing.
If you need a nearly cloud-only library, first confirm that uploading has finished in Photos and check a few recent images at iCloud.com. Then turn off Sync this iPhone and choose Remove from iPhone. That removes the iCloud library from this device without deleting the copies stored in iCloud. The tradeoff is that new photos, edits, and deletions from this iPhone will no longer sync automatically.
Do not select photos in the Photos app and tap the trash icon while syncing is enabled. That is a synchronized deletion, so the items are removed from iCloud and your other connected devices too.
A cleaner app can help find duplicates or large videos, but deleting those items still deletes them from iCloud if sync is on. For your stated goal, Optimize Storage is the safer answer. Keep a separate backup of anything irreplaceable, since iCloud Photos is primarily a syncing library rather than an independent archive.
iCloud Photos is sync, not cold storage.
@@sudosys2 has the right practical answer with Optimize iPhone Storage, but don’t expect it to free a precise amount immediately. iOS decides which originals to offload, and the phone still keeps thumbnails, metadata, and some recently viewed files. Leaving it plugged in on Wi-Fi with the screen locked usually gives the optimization process time to work.
The bigger caveat is that iCloud Photos should not be your only copy of anything important. An accidental deletion syncs everywhere, and Recently Deleted is only temporary. For irreplaceable photos, keep a separate archive on a computer, external drive, or another cloud service. Cleaner apps such as Clever Cleaner may reduce the library by finding duplicates, but they cannot remove only the iPhone copy while leaving that same photo in a synced iCloud library.
If you turn off iCloud Photos on the iPhone, every new picture you take afterward stays on that phone unless you upload it some other way. That makes it a workable way to clear local copies, but it breaks the automatic syncing most people expect.
For maximum space, first confirm the library has finished uploading and spot-check it on iCloud.com or another device. Then go to Settings > your name > iCloud > Photos, switch off “Sync this iPhone,” and choose “Remove from iPhone.” The existing cloud library remains in iCloud, while the phone stops maintaining its synced copy. Be very careful not to choose “Turn Off and Delete from iCloud,” which is a different option.
So @sudosys2’s Optimize Storage suggestion is still the better choice if you want normal syncing to continue. Turning sync off is more of a clean break: more space, but your Photos app no longer acts as a live window into the iCloud library.
Before you change any setting, look at what’s actually eating your space. Settings > General > iPhone Storage shows whether it’s photos or something else entirely. A lot of people go through the whole sync dance and then find out the real hog was old app caches or downloaded videos.
If it really is your library, I’m with the crowd here that Optimize iPhone Storage is the sane default. But I’d set expectations lower than what @sudosys2 and @digital_circuit implied. Optimization is lazy on purpose. It only pulls originals down and thumbnails stay, so on a huge library you might reclaim a good chunk, but on a modest one the savings can feel underwhelming. It also won’t touch anything until the phone thinks it needs the room, so don’t stare at the storage number expecting it to drop the moment you flip the toggle.
The thing nobody’s flagged yet: Recently Deleted. Anything you remove sits there for 30 days and keeps counting against local space until you empty it or the timer runs out. So if you were hoping deletions give you instant breathing room, they don’t unless you clear that album manually.
On the sync-off route that @brightbuilder laid out, it works, but be honest with yourself about the aftermath. Once syncing is off, every new photo lives only on the phone until you move it somewhere. That’s fine for a week, easy to forget for a year, and then you’ve quietly built a second unbacked-up library. For most people that trade isn’t worth it just to save space.
As for Clever Cleaner, it’s reasonable for spotting duplicates and oversized videos before you decide what stays, but keep in mind the point already made in this thread: with sync on, deleting through any tool deletes from iCloud too. Use it to see what you’ve got, not as a way around how syncing works.
There isn’t a hidden “delete local copy” button for individual items in iCloud Photos. Apple simply does not offer that while syncing is enabled.
For a few large videos or photos, there is a workaround: save a separate copy to iCloud Drive, wait for it to upload, and verify that it opens from another device or iCloud.com. Then delete the original from Photos and empty Recently Deleted. The Drive copy remains, but it is no longer part of your Photos library. Live Photos, albums, edits, and some metadata may not carry over neatly, so this is better for occasional large files than an entire collection.
For the full library, @sudosys2’s Optimize iPhone Storage route is still the least troublesome option. Check that your iCloud storage is not full first. If uploads are stalled, removing anything before confirming it reached iCloud is a bad gamble.
So the choices are fairly blunt: Optimize and let iOS manage local storage, turn syncing off and remove the library from that phone, or store selected files somewhere outside iCloud Photos. Deleting normally while sync is on is not an offload. It is a deletion.
If your plan is to park the photos in a Shared Album and then delete the originals, don’t. Shared Albums are meant for sharing, not full-quality storage, and some image information or quality can be lost.
For normal use, leave Sync this iPhone on and select Optimize iPhone Storage. Then open Photos, tap your account icon, and make sure syncing has completed. iOS will replace many originals with smaller device copies as space is needed, while the full-resolution files stay in iCloud. You cannot force this per photo.
If you need the entire library gone from the phone, confirm the upload first, turn off Sync this iPhone, and choose Remove from iPhone. Avoid anything labeled Turn Off and Delete from iCloud. Afterward, remember that new pictures taken on that iPhone will no longer upload automatically.
Don’t rely on Optimize Storage if you need a precise amount of free space immediately. iOS decides when and which originals to remove, so the storage number may barely move at first. If the phone is completely full, clearing downloaded movies, music, or unused apps can create some breathing room while photo optimization catches up.
@@sudosys2’s setting is still the right choice for normal use: keep Sync this iPhone enabled and select Optimize iPhone Storage. Just remember that optimized photos may need an internet connection before you can view or edit the full-resolution version. There’s no way to mark an album as “cloud only” or manually offload selected photos.
If you absolutely need the whole library removed locally, turn off syncing only after confirming the upload is complete, then choose Remove from iPhone. Otherwise, leave syncing on and don’t use the trash button. With iCloud Photos, trash means delete everywhere, not free local space.
Think of it like two different phones. One has a 400GB library and gets real relief from Optimize Storage because there are tons of originals to swap out for thumbnails. The other has maybe 20GB and barely moves after flipping the same toggle, which is what @logicarchitect3340 was getting at. Same setting, wildly different payoff depending on how much you’re actually storing.
The point I keep seeing skipped: Optimize Storage isn’t a delete, so nothing frees up if your iCloud plan is maxed out and uploads are stuck. If the cloud side is full, iOS has no safe originals to offload against, and you’re just staring at a storage bar that won’t budge. Check your iCloud tier before you touch anything.
On Clever Cleaner, it’s fine for seeing what’s bloating your library, but everyone here already nailed the catch. With sync on, whatever you delete through it leaves iCloud too. Use it to spot the junk, then decide, don’t treat the delete button as an offload. For most people I’d just turn on Optimize, leave it charging overnight on Wi-Fi, and clear Recently Deleted so the 30-day holdover stops eating space.