Icloud why wont my total storage adjust in icloud even though i have deleted most of my photo files

Question

iCloud would not backup my ipad 2 as I my icloud storage was reading full. I now have reduced my photo files to 3 GB on my ipad, in fact it is 18 GB smaller, backed it up on my computer etc.  I was expecting my icloud manage storage to alter accordingly and then backup my ipad but it did not.  What should I do. Delete the backup and do it again?

Answer 1

Apps are not part of the backup. In app data is, but backing up the apps would be redundant as they can be re-downloaded from the store for free. Media (music, movies, podcasts, etc.) are also not part of the backup for the same reason.
iCloud: iCloud storage and backup overview
What iCloud backs up
You have important information on your iPhone, iPad, and iPod touch. iCloud automatically backs up your device over Wi-Fi every day while it’s turned on, locked, and connected to a power source. With your device information backed up in iCloud, you can easily set up a new device or restore information on one you already have.
Here’s what iCloud backs up:
Purchase history for music, movies, TV shows, apps, and booksYour iCloud backup includes information about the content you have purchased, but not the purchased content itself. When you restore from an iCloud backup, your purchased content is automatically downloaded from the iTunes Store, App Store, or iBooks Store. Some types of content aren’t downloaded automatically in all countries, and previous purchases may be unavailable if they have been refunded or are no longer available in the store. For more information, see the Apple Support article iTunes in the Cloud availability by country. Some types of content aren’t available in all countries. For more information, see the Apple Support article What can I buy from the iTunes Store in my country?.
Photos and videos on your iOS devices
Device settings
App data
Home screen and app organization
iMessage, text (SMS), and MMS messages
Ringtones
Visual Voicemail
Your iOS device backup only includes data and settings stored on your device.
It doesn’t include data already stored in iCloud, for example contacts, calendars, bookmarks, mail messages, notes, shared photo albums, iCloud Photo Library beta, My Photo Stream, and documents you save in iCloud using iOS apps and Mac apps.