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Apple says three conditions can speed up Spotlight indexing ahead of OS updates

Apple says three conditions can speed up Spotlight indexing, a process that can take hours or days.

The indexing process creates and continuously maintains a searchable catalog of information stored on a device, allowing Spotlight and the new Siri AI to surface apps, files, messages, photos, contacts, settings and other content during searches. The index is stored locally on each device, so the process must be completed separately on every Apple device a user owns.

In the support document, Apple said that depending on the amount of data on a device, Spotlight indexing can take hours or even days, while incremental updates are much faster. The company said indexing completes more quickly when the device is not in use, is connected to power, and is connected to the internet via Wi-Fi or Ethernet in case email or other data needs to be downloaded for indexing.

The guidance arrives as Apple prepares to release iOS 27, iPadOS 27, macOS 27 and other operating systems announced at this year's WWDC, according to the report. 9to5Mac noted that Apple had already begun groundwork with iOS 26.6, which the company said would "optimize the Spotlight index to prepare for iOS 27," moving some indexing work ahead of the major software release.

For Mac users, indexing progress can be checked through an indicator at the top of the Spotlight or Siri window after pressing Command-Space. On iPhone, iPad and other devices, users may see a notification in the Settings app indicating that Search and Siri are still optimizing. Apple also noted that Mail can display a separate notification when email indexing has not yet finished. The full support document also includes guidance on what to do if Spotlight gives unexpected search results.