Xcode UI Previews 110GB: safe Xcode storage checklist

A practical first-pass checklist for Xcode UI Previews folder 110GB. The goal is to recover space without deleting the folder that proves expensive to rebuild.

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Find the biggest storage culprit first.

Run the Chrome or Edge web scan, delete one approved low-risk item free, then use the $29 Deep Cleanup only if meaningful space remains.

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Separate Xcode storage by risk bucket

Xcode storage is not one thing. DerivedData, Archives, simulator devices, simulator runtimes, DeviceSupport, and package caches have different recovery costs.

First read-only checks

Start with read-only folder sizes, then remove regenerable build data before touching archives or runtimes tied to active projects.

du -sh ~/Library/Developer/Xcode/DerivedData
du -sh ~/Library/Developer/Xcode/Archives
du -sh ~/Library/Developer/CoreSimulator

Usually safer cleanup candidates

DerivedData after Xcode is closed
Old unavailable simulator devices
Regenerable package and build caches

Review before deleting

Archives used for release symbolication
Simulator runtimes required by current projects
DeviceSupport folders for devices still being tested

Turn this into a cleanup plan

If Xcode storage pain repeats across the team, the $29 deep cleanup turns one representative scan into a safe/review/do-not-touch cleanup plan.

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