Checks UE5 assets against rules for naming, folder placement, texture settings, Blueprint variables, mesh setup and stale redirectors. What fails is marked in the Content Browser: on the asset, on the folder that holds it, and as a filter in the normal filter menu.
Fixes run in bulk. Pick a rule, look through the list of assets and proposed names, apply. After a scan the result exports to an HTML report.
Free, no limits and no time limit. Scan a project of any size, fix as much as you want, export the report. What a person does in the editor is free; what runs without a person, the command line for CI and machine readable export, is in the full version.
Downloads are on the Releases page: take AssetStandardsValidator_Free_{ue}_{ver}.zip for your UE version. Install steps are at the bottom.
- Open the Tools menu and click Run Full Audit
- Wait for the scan. The panel opens on its own with the results in it.
- Click Navigate → on a row to select that asset in the Content Browser
- Click Fix on the row to apply the fix
The panel is also reachable on its own, from Tools → Open Standards Validator or the Standards Validator button in the Level Editor toolbar. Its scan button is Validate All.
Nothing to set up first. The plugin writes its config on first run and starts with a conservative rule set.
You don't have to keep the panel open. An asset that fails a check gets a marker on its icon, and so does every folder above it, so you can see which part of the project is dirty without opening anything. Hover an asset and the tooltip lists what it failed and how bad it is.
The normal filter menu gets an Asset Standards Validator section. Filter by severity P0 to P3, by "Has Any Error", or by one specific rule. Two clicks and thousands of assets are down to the broken ones.
Right-click an asset for Validate Now and Fix Issues. On a folder the same menu has Validate Folder.
The panel is still where the full sortable list, the batch fixes and the reports live.
Six categories. Every rule works here. Most of them ship switched off, because on a legacy project they return thousands of results on the first scan and nobody reads that. Turn them on as your standards settle.
| Category | Checks | Auto-fix |
|---|---|---|
| Naming Convention | Prefix, suffix, junk names, non-ASCII | ✅ Rename |
| Folder Structure | Wrong location, bad path format, Developers/ check | ✅ Move |
| Texture | Power-of-two, max size, sRGB, compression, LOD group | ✅ Set property |
| Blueprint | Variable naming, bool prefix, tooltips, compilation errors | ✅ Rename var |
| Static Mesh | Collision, LODs, Nanite policy | ✅ Nanite only |
| Asset Health | Stale redirectors | ✅ Consolidate |
Full rule reference (all rule IDs, defaults, config properties)
| Rule ID | What it checks | On by default |
|---|---|---|
missing_prefix |
Asset has required class prefix (e.g. BP_, T_) |
✅ |
duplicate_prefix |
Prefix is not repeated in the name | ✅ |
missing_suffix |
Asset has required class suffix when defined | ✅ |
missing_allowed_suffix |
World assets use allowed level suffixes | ✅ |
name_pattern_mismatch |
Name matches the allowed pattern regex | ❌ |
non_ascii_name |
No non-ASCII characters in name | ❌ |
junk_name |
Name is not a placeholder (New, Temp, Default…) | ❌ |
wrong_case |
Name segment starts with a lowercase letter | ❌ |
Auto-fix: missing_prefix, duplicate_prefix, missing_suffix, missing_allowed_suffix, junk_name, wrong_case.
| Rule ID | What it checks | On by default |
|---|---|---|
wrong_folder |
Asset is in the correct folder for its class | ✅ |
folder_not_pascal_case |
Each folder segment uses PascalCase | ❌ |
folder_contains_unicode |
No non-ASCII characters in folder path | ✅ |
folder_disallowed_name |
No generic folder names (Assets, Meshes…) | ❌ |
folder_in_developers |
Asset is not inside the Developers/ folder | ✅ |
Auto-fix: wrong_folder (moves asset to the correct folder).
Reads asset metadata, so the texture is not loaded in full.
| Rule ID | What it checks | On by default |
|---|---|---|
texture_not_power_of_two |
Width and height are both powers of two | ❌ |
texture_exceeds_max_size |
Dimensions within max size (default 8192) | ✅ |
texture_wrong_srgb |
sRGB flag matches texture type | ❌ |
texture_wrong_compression |
Compression matches texture type | ❌ |
texture_wrong_group |
LOD group matches texture suffix | ❌ |
Texture type comes from the name suffix. _D is colour, so sRGB stays on. _N is a normal map, so sRGB goes off.
Auto-fix: texture_wrong_srgb, texture_wrong_compression, texture_wrong_group.
| Rule ID | What it checks | On by default |
|---|---|---|
bp_bool_no_prefix |
Boolean variables start with b |
❌ |
bp_bool_is_pattern |
Avoid bIsDead, prefer bDead |
❌ |
bp_var_not_pascal_case |
Variable uses PascalCase | ❌ |
bp_var_atomic_type_name |
Name does not include type (Score not ScoreInt) |
❌ |
bp_editable_missing_tooltip |
Editable variables have tooltip text | ❌ |
bp_var_config_flag |
Variable does not use the Config flag | ❌ |
bp_editable_missing_range |
Editable numeric variables have a range set | ❌ |
bp_vars_uncategorized |
Editable variables are categorized (when ≥ 5) | ❌ |
bp_var_redundant_context |
Variable name doesn't repeat the class name | ❌ |
var_array_not_plural |
Array variables use plural names | ❌ |
var_missing_type_name |
Struct/object variables include type name | ❌ |
blueprint_compile_error |
Blueprint has no compilation errors | ✅ |
blueprint_compile_warning |
Blueprint compiles with no warnings (deprecated nodes etc.) | ❌ |
Auto-fix: bp_bool_no_prefix, bp_bool_is_pattern, bp_var_not_pascal_case.
| Rule ID | What it checks | On by default |
|---|---|---|
mesh_no_collision |
Mesh has collision geometry | ❌ |
mesh_no_lods |
Mesh has LODs (for meshes over 5 000 triangles) | ❌ |
mesh_nanite_policy |
Nanite is enabled/disabled as required | ❌ |
Auto-fix: mesh_nanite_policy (enables or disables Nanite per policy).
| Rule ID | What it checks | On by default |
|---|---|---|
stale_redirector |
ObjectRedirector has been resolved | ✅ |
Auto-fix: consolidates the redirector.
On first run the plugin creates a config asset at Content/Data/DA_ASV_AllarStyleGuide. Four of its triggers are on:
| Trigger | Fires when |
|---|---|
| OnSave | an asset is saved |
| OnAssetCreated | a new asset appears |
| OnAssetRenamed | an asset is renamed |
| Manual | you press Run Full Audit, or use the right-click menu |
Two more sit in the same config switched off, because each one starts a full scan:
| Trigger | Fires when |
|---|---|
| OnStartup | the editor opens |
| OnPIE | Play In Editor starts |
PreBeginPIE is not in the default config at all. Add it if you need level checks. It fires just before Play starts, while the editor world is still whole.
Badges update as results come in. The panel does not have to be open for any of this.
Fix a whole rule at once instead of clicking through rows. Narrow the panel to one rule with the Rule filter, then press Fix All. The button turns on once two or more fixable results are showing.
A dialog opens with every affected asset, grouped by folder, current name next to proposed name. Edit a proposed name in place, or uncheck a row to skip it. Collisions are caught before anything runs: two assets that would end up with the same name, or a target path that is already taken. Progress shows per row and the panel refreshes at the end.
Press Export Report in the panel toolbar and pick a location. HTML is the free format. JSON and CSV, the ones a dashboard reads, are in the full version.
The HTML file opens in a browser. It has a health score, the violations that cost the most, and a breakdown per folder and per rule. This is the thing to send a lead who is never going to install the plugin.
The commandlet is a full version feature. It runs the same validation with the editor closed, so a dirty branch can fail a build. In the free version the command prints one line saying so and exits with code 3.
UnrealEditor-Cmd.exe MyProject.uproject -run=ASVCommandlet \
-Root=/Game/Art,/Game/Blueprints \
-severity=P1 \
-format=json \
-output=./reports/
Exit code 0 means clean, 1 means something failed a rule, 2 means the report could not be written. -severity=P0 is the default and fails on critical only, -severity=P1 counts warnings as well, and P0 to P3 are all accepted. -Root takes comma-separated content paths. -MaxAssets caps the scan.
The JSON output has per-rule counts and asset paths, which is enough to feed a CI dashboard or a PR gate.
The config DataAsset is created for you on first run: Content/Data/DA_ASV_AllarStyleGuide. Open it to switch checks on and off.
Global settings live in Project Settings → Plugins → Asset Standards Validator: scan roots, excluded paths, logging.
For project-specific asset types, say GA_ for Gameplay Abilities, open the DataAsset, expand ASVValidator_NamingConvention → Class Rules and add an entry with the parent class and the prefix. Blueprint subclasses of that class match on their own.
The full option reference is in the in-editor docs.
Tools → Help → Documentation. Works offline, has search, covers every validator, auto-fix, configuration and reports.
Everything a person does in the editor is free, with no caps. The full version adds the parts that run without a person, and the source.
| Feature | Free | Full |
|---|---|---|
| All validators and rules | ✅ | ✅ |
| All triggers | ✅ | ✅ |
| Content Browser badges + filters | ✅ | ✅ |
| Scan size | ✅ No limit | ✅ No limit |
| Auto-fix, single and batch | ✅ No limit | ✅ No limit |
| Report export HTML | ✅ | ✅ |
| In-editor docs | ✅ | ✅ |
| Command line for CI | ❌ | ✅ |
| Report export JSON / CSV | ❌ | ✅ |
| Custom validators (C++) | ❌ | ✅ |
| Source code | ❌ | ✅ |
| Platforms | Windows | Windows · Linux · Mac |
- Open Releases and download
AssetStandardsValidator_Free_{ue}_{ver}.zipfor your UE version - Unzip it. You get a folder called
AssetStandardsValidator. - Copy that folder into
UE_5.x/Engine/Plugins/Marketplace/ - Open your project, go to Edit → Plugins, find Asset Standards Validator, tick it and restart the editor
Builds exist for UE 5.0 through 5.8. Editor-only plugin, so it is not part of a packaged build.
Asset Standards Validator on Fab
The command line runner for CI, JSON and CSV export, the full source, and your own validators in C++. Validators are C++ only, there is no Blueprint authoring. Scanning and fixing are already unlimited in the free build, that is not what you are paying for.
Remove the free build before installing it. Both builds use the same module name and the editor will not load two of them. Delete or rename the AssetStandardsValidator folder in Plugins/Marketplace/, restart, then install.
Open an issue and include your UE version and what happened.
There is a Discord too, if you would rather ask there.