Is there a way to move my photos from my old me.com account to my new iCloud account?

You might already have a copy of your library in iCloud Photo Library, or the last 30 days of photos in My Photo Stream*

If you enabled iCloud Photo Library, your photos and videos are automatically uploaded to iCloud at full resolution. You can make copies of your photos and videos when you follow these steps:

• On your iPhone, iPad, or iPod touch with iOS 10.3 or later, tap Settings > [your name] > iCloud > Photos. If you’re using iOS 10.2 or earlier, tap Settings > iCloud > Photos. Then select Download and Keep Originals and import the photos to your computer.
• On your Mac with OS X Yosemite 10.10.3 or later, open the Photos app. Choose Photos > File > Export.
• On your PC, set up iCloud for Windows and turn on iCloud Photo Library.

If you want to download a few photos or videos, you can use iCloud.com to download the most recent version of photos and videos to your computer. Just go to iCloud.com and open the Photos app. Then select the photos and videos you want to download and click .

My Photo Stream* photos are automatically imported to your Photos library on your Mac, unless My Photo Stream and Automatic Import are turned off in the app preferences. If you turn on iCloud Photo Library, you can find your photos in the All Photos folder instead of My Photo Stream.

You can also use the steps below to manually copy your photos and videos. Any comments or likes connected to a shared photo aren't saved, and photos and videos saved from shared albums aren't full resolution.

Copy photos and videos from iCloud Photo Sharing on your Mac

Follow these steps to manually import photos and videos in shared streams to your Photos Library:

1. Open Photos and select the Shared tab.
2. Double-click a shared stream.
3. Right-click (or Control-click) a photo and choose Import.

After you import your photos, you might want to back up your library. You can store them as a separate library on your computer or on a different drive.

There may be some data loss, but you can minimize it. If syncing photos with iCloud, ensure Optimization is turned off in Settings/Your Name/iCloud/Photos and/or in Photos/Preferences/iCloud. Then make sure full resolution photos are on the device/computer. When signing out of iCloud, if asked whether you want to retain data, choose yes. Messages conversations will be lost if they are addressed to the ID. See the article below for other places that the old ID should be removed. Also set up Family Sharing to keep access to your apps. Also see Winston Churchill's response in the below discussion

How to transfer all files from one iCloud account to another

Apple ID email address or password - What to do after you change

Family Sharing

Family Sharing - Use your own Apple ID for Family Sharing

Family Sharing -What types of content can I share?

Family Sharing - If you don‘t see your family‘s shared content

Family Sharing - purchases and payments

Family Sharing - Hide and unhide music, movies, TV shows, audiobooks, and books