iCloud can keep your photos in sync across all your devices, for example – iPhone, iPad, Mac, and PC. You can set up your devices to automatically place a copy of all photos in iCloud, and you can manually upload photos from your Mac or Windows PC to iCloud as well.

What does it mean to upload to iCloud?

Uploading photos to Apple's iCloud enables you to back-up your precious memories and easily access photos wherever you are. ... We'll also explain the different options you have when storing photos on your devices, and troubleshoot common issues.

Is everything uploaded to iCloud?

First, navigate to Settings > Photos > iCloud Photos and toggle to on, which will automatically upload and store your library to iCloud, including iCloud.com, where you can view and download photos on a computer.