RefGraph — Asset Reference Auditor

RefGraph is a lightweight Editor tool that maps the invisible web of references between your Unity assets - and finds the broken ones. It answers three everyday questions about any asset:

FIND USAGES - Who references this? Select any asset and instantly see every prefab, material, or asset that points to it. Know the blast radius before you delete or rename anything.

DEPENDENCY VIEWER - What does this use? Explore an asset's dependencies as a lazily-expanding tree that loads one level at a time, so it stays responsive even on complex prefabs. Circular references are handled safely.

MISSING-REFERENCE FINDER - What's broken? Scan your prefabs and ScriptableObjects for serialized fields that point to deleted or missing assets - the silent "None (Object)" bugs that cause runtime null-reference crashes. Click any result to jump straight to the offending asset.

FAST & LIGHTWEIGHT

RefGraph builds its dependency index once and caches it to disk, so it survives Editor restarts and only re-reads changed files on refresh. All scanning is on-demand - nothing runs in the background or on every repaint. It is read-only and never modifies your assets, and it is Editor-only, so it adds nothing to your build.

WHAT'S INCLUDED

- Find Usages (reverse dependencies)

- Dependency Viewer (forward dependencies, expandable tree)

- Missing-Reference Finder (project-wide broken-reference scan)

- Right-click "RefGraph: Find Usages" shortcut in the Project window

- Full documentation

REQUIREMENTS

- Unity 2022.2 or later (fully supported on Unity 6)

- Any render pipeline

- Editor-only; nothing added to your build

Note (v1): Missing-reference scanning covers prefabs and ScriptableObjects; scene (.unity) scanning is planned for a future update. Scans cover the Assets/ folder.