

If you have updated to iOS, the two new formats HEVC and HEIF will cut half the storage of your photos. If you find the iCloud Photo Library stuck uploading from Mac on iPhone or iPad, try the fixes below. This is not an iCloud photos not uploading problem and you may just wait. It will be quite normal to take hours for a large photo library. If there are iPhone videos to be uploaded to iCloud, it's going to take even longer.

Generally, photo upload is very slow on iCloud especially when a full library is uploaded.

Keep in mind that the upload speed relies heavily on your cable. 6 Solutions - Fix iCloud Photo Library Not Uploading Photos Problem
