macOS processes

What is cloudphotod on Mac?

cloudphotod is the iCloud Photos agent. Uploads and downloads of your photo library show under it. Photos has a Pause button for uploads.

Process: cloudphotodProcess: photolibrarydProcess: photoanalysisdApplies to: macOS 13 Ventura and later. Seen on macOS 27.2.Checked: 29 October 2026

Where you see it

cloudphotod is in the list in Activity Monitor › Network, in nettop or in Kilobat.
A firewall or network monitor asks if cloudphotod can connect.
Upload is high for hours after you import photos or videos.

What it is

The man pages describe three agents. cloudphotod is “responsible for all iCloud Photos activity”.

photolibraryd “handles all photo library requests”. photoanalysisd handles background processing for Memories, People and search.

Of these three, cloudphotod is the one with the iCloud Photos sync. The man pages do not say that the other two use the network.

Why it uses the network

Uploads of new photos and videos. With iCloud Photos on, new items upload to iCloud.
Downloads from other devices. Items from your iPhone or other devices download to this Mac.
Originals on demand. With Optimize Storage, the Mac downloads the full original when you open an item.

Is it normal?

Yes. A large upload after an import is usual. A first sync of a library can take days.

Apple says that iCloud Photos pauses itself in Low Data Mode, Low Power Mode and in some other conditions.

See how much it uses

Open Activity Monitor from Applications > Utilities. Click Network.
Type cloudphotod in the search field. The Sent Bytes and Rcvd Bytes columns show what it moved.
In Terminal, watch only this process. Press d to show the change per second, and q to quit.
```
nettop -p cloudphotod -P
```
In Photos, click Library, then All Photos. Scroll to the bottom to see the sync status.

Reduce or pause it safely

To pause uploads for one day, open Photos. Click Library, then All Photos.
Scroll to the bottom and click Pause.
On a hotspot or a capped network, turn on Low Data Mode. Choose Apple menu > System Settings > Wi-Fi. Click Details next to the network, then turn on Low data mode.
Do not turn off iCloud Photos to fix a slow sync. Apple says that this starts the sync again.
Do not quit cloudphotod in Activity Monitor. It is part of macOS, and other features depend on it.

With Kilobat

Open the Kilobat app list and search for cloudphotod. Its row shows the live rate and the bytes it moved.
In Terminal, see the same live list. Press / and type the name to search.
```
kilobat status --watch
```
Show its traffic over one day. Names match kilobat report --summary.
```
kilobat bandwidth cloudphotod day
```
Through MCP, an AI agent gets the same history with get_app_bandwidth and the name cloudphotod.
The live view is free. History in the app needs Pro. Kilobat records history only while the app runs.

Questions

Why is photoanalysisd busy when I am offline?

Its work is analysis of the library on the Mac. The man page describes it as background processing, not as sync.

How long does Pause last?

Apple says that Pause stops uploads for one day.

Sources

cloudphotod(8), photolibraryd(8) and photoanalysisd(8), man page installed with macOS 27.2
Apple Support: Set up and use iCloud Photos
Apple Support: If your iCloud Photos aren't syncing or syncing with iCloud is paused
nettop(1), man page installed with macOS 27.2

Sources checked on 29 October 2026. Man pages are the ones installed with macOS; open one with man <name> in Terminal.