Zion Asset Auditor

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Overview

Zion Asset Auditor scans your whole Unity project in one pass and shows you exactly what is wrong - unused assets, duplicates, oversized textures, missing meta files and broken references - then fixes what is safe to fix in a single click. It is an editor-only tool with no runtime footprint, so it never ships in your build. And it is free.

Everything runs from one window

The Audit tab opens with a project health score, headline counts, and a reclaimable-space breakdown by asset type, so you can see at a glance where the bloat is. Findings are grouped by category with live counts, searchable, and colour-coded by severity. Select what you want to act on, or dismiss what you have already reviewed - the whole workflow is built so you never delete something you can't recover.

Features

• Five audits in one scan - unused assets, duplicate assets, texture issues, missing .meta files and broken references
• Project health score (0-100) with a reclaimable-by-type breakdown
• Reference viewer - click any finding to see what references it and what it depends on, with confirmed-orphan detection before you delete
• One-click texture fixes - cap max size and disable Read/Write in place, fully reversible with Undo
• Recoverable delete - assets move to the OS trash behind a confirmation, never a hard delete
• Category filter pills, per-finding search, and bulk select-all in view
• Dismiss findings you've reviewed - the whitelist is stored with the project (keyed by GUID) and shared across the team
• Scan history with a findings-over-time trend chart and cumulative space cleaned up
• CSV and Markdown report export
• Headless CI mode - run the full audit from your build pipeline and fail the build when critical issues appear
• Asynchronous scanning that builds the project index incrementally without freezing the editor

Honest Limits

Static analysis can't see everything, and the tool is explicit about it rather than pretending otherwise:

• The "unused" audit sees serialized references and build-root reachability; assets loaded dynamically by string (Resources.Load by name, Addressables by key) can't be proven used by any static scan, so ScriptableObject-type assets are reported for review rather than one-click deletion
• Texture findings are based on import settings and dimensions - a texture correctly capped on import is not flagged, because it isn't wasting memory
• Always use version control before bulk operations - deletion is recoverable, but a backup is always the right habit

Ideal For

• Trimming large or long-running Unity projects with confidence
• Auditing a project before an Asset Store submission or handoff
• Finding oversized textures and duplicate art that inflate build size
• Confirming exactly what references an asset before removing it
• Gating a build pipeline on project cleanliness via CI

Technical Details

• Five independent audit modules run from one asynchronous scan; the project index builds incrementally and is cancellable, so the editor stays responsive on large projects
• Health score weighted by severity, with a reclaimable-space breakdown grouped by asset type
• Reference viewer resolves incoming and outgoing references on demand, reusing the scan's dependency map; confirmed-orphan detection for safe removal
• Duplicate detection by content hash (SHA-256)
• Texture audit flags oversized, non-power-of-two and Read/Write-enabled imports; one-click fixes cap max size and disable Read/Write, registered with Unity Undo
• Safe delete via move-to-trash behind a confirmation dialog - recoverable, never a hard delete
• Project-scoped, team-shared whitelist keyed by asset GUID, so dismissals survive asset moves
• Scan history stored per project with a findings-over-time trend
• Headless CI entry point (-executeMethod) writes a CSV or Markdown report and sets a build-failing exit code by threshold
• Configurable texture thresholds, scan categories and ignore paths, persisted between sessions
• Editor-only - zero runtime cost, no build size impact
• Compatible with Built-in, URP and HDRP - it audits assets, not rendering

Requirements

• Unity 2021.3 LTS or newer
• Editor-only - adds nothing to your build or runtime

Frequently Asked Questions