Free up iPhone space without deleting photos

Short answer: You can keep every photo and still free a lot of space. Let iCloud hold the full-size originals with Optimize iPhone Storage, make videos smaller by re-encoding them with HEVC, remove the motion from Live Photos you never play, and clear the things on your phone that are not photos at all.

1. Let iCloud keep the originals

If you have enough iCloud space for your library, this frees the most without losing anything. Open Settings › [your name] › iCloud › Photos and choose Optimize iPhone Storage (on iOS 27, it is under iPhone Storage on that screen). The phone keeps smaller versions and downloads the original when you open one. It only replaces originals when space is actually needed, so the result shows up over time, not at once. If you pay for iCloud and the phone is still full, this switch is usually why: iPhone storage full even though you pay for iCloud.

2. Make videos smaller

Videos are usually the heaviest part of a library, and many are bigger than they need to be. When you record, your iPhone has to encode in real time, so it uses a generous bitrate. Re-encoding the same frames with HEVC afterwards, without the time pressure, often gives a much smaller file at the same resolution and frame rate.

Photos cannot do this for you. For new recordings, check that Settings › Camera › Formats is set to High Efficiency; Most Compatible records larger H.264 files.

3. Drop the motion you never play

A Live Photo stores a video of about three seconds next to the still frame, and that clip is often around half of the total size. If you never press and hold to play it, that is space you are paying for. In Photos you can turn a single Live Photo off while editing, but that only hides the motion; the clip stays in the file. To stop new ones, turn Live off in the Camera and keep Settings › Camera › Preserve Settings › Live Photo on so your choice sticks.

4. Clear what is not a photo

• Messages: delete large attachments, or set Keep Messages to 1 Year.
• Chat apps: WhatsApp, Telegram and LINE keep their own copies of every received file. Clear them from each app’s storage screen.
• Streaming downloads: remove films and episodes you have watched.
• Apps: offload the ones you do not use from Settings › General › iPhone Storage; their data stays.

What does DustFox do differently?

DustFox has three methods that free space without losing a single photo or video. Shrink Videos re-encodes videos with HEVC on the phone, keeps the resolution and frame rate, and skips videos that are already efficient. Compressible Photos converts JPEG photos to HEIC, the same frame in less space. Live Photos keeps the still, copied byte for byte, and drops the motion. Each one adds the new version to your library and moves the original to Recently Deleted for 30 days, and each shows how much it will free before you confirm. Nothing is uploaded, and no account is needed.