---
id: icloud.why-is-icloud-photos-taking-so-long-to-upload
url: https://storagestudio.us/faq/icloud/why-is-icloud-photos-taking-so-long-to-upload
category: "iCloud & iCloud Photos"
subcategory: "iCloud Photos and the Photos library"
question: "Why is iCloud Photos taking so long to upload my library?"
alt_questions:
  - "iCloud Photos upload slow Mac"
  - "How long does iCloud Photos take to sync?"
  - "Photos uploading forever"
  - "see icloud photos upload progress mac"
short_answer: "The first upload sends every original in full, in the background, and slows or pauses when you're busy, on battery or on a weak connection — big libraries can take days. Keep the Mac plugged in and awake with Photos open; progress shows at the bottom of the library."
tags: ["icloud photos", "upload", "sync"]
related: ["https://storagestudio.us/faq/icloud/why-are-my-photos-not-syncing-to-icloud", "https://storagestudio.us/faq/icloud/how-do-i-pause-icloud-photos-syncing", "https://storagestudio.us/faq/icloud/is-icloud-photos-a-backup"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Why is iCloud Photos taking so long to upload my library?

The first upload of a big library can take days: every photo and video is uploaded in full, and Photos does it in the background, slowing down or pausing when you're busy, on battery or on a limited connection. Videos and large libraries take the longest.

To help it along, keep the Mac awake and plugged in on a good connection with Photos open, and don't pause it. Progress shows at the bottom of the library view. Your photos are safe on the Mac while it works — but if they exist only there, keep a backup until the upload finishes.