Bulk Extended

Batch-edit supported asset types from one window.

Bulk Extended is intended for technical artists, environment artists, optimization passes and content-preparation workflows where editing assets one by one would be slow or error-prone.

Enable Bulk Extended and open the dockable tab.

1. Open the Unreal project.
2. Go to Edit > Plugins.
3. Confirm that Bulk Extended is enabled.
4. Restart the editor if it was just enabled.

Open the tool from Window > Bulk Extended. The current window title is BULK EXTENDED - Static Mesh Editor, although the tool also supports Materials, Material Instances, Textures and Niagara assets.

Select, refresh, configure, apply.

1. Select one or more supported assets in the Content Browser.
2. Open Bulk Extended and click Refresh.
3. Confirm the selected asset count in the status bar.
4. Expand the section you want to use.
5. Enable that section's Apply checkbox.
6. Configure the values to apply.
7. Click APPLY TO ALL SELECTED.
8. Wait for the progress section to report completion and review a representative sample.

Eleven editing sections

Nanite

Enable Nanite, adjust Position Precision, Keep % Triangles, Trim Relative Error and fallback generation settings.

Distance Fields

Configure mesh distance-field generation, resolution scale, two-sided generation and per-LOD behavior.

Collisions

Create or replace Box, Sphere or Capsule collision and standardize collision complexity.

LOD Settings

Apply LOD0 Screen Size and Min LOD values across selected meshes.

Lightmass

Manage lightmap resolution, UV index, source UV index, lightmap UV generation and Auto-Fix Lightmap UVs.

Section Overrides

Override cast shadows, material slots, ray-tracing visibility, Distance Field Lighting and Force Opaque in Ray Tracing per LOD or section.

Asset Settings

Manage uniform-sampling settings and compatible import metadata such as Uniform Scale.

Materials and Material Instances

Batch scalar, vector, texture, static-switch and static-component-mask values, copy uniform parameters from parent and clear Material Instance overrides.

Textures

Batch LOD Bias, Max Size, Texture Group, compression, mip generation, sRGB, green-channel flipping, alpha behavior, Virtual Texture settings and Oodle options.

Niagara

Set fixed bounds, warmup, determinism, effect type, simulation target and emitter renderer state.

Metadata / Tags

Write, update or remove package metadata across supported selected assets.

Large batches are processed in chunks.

For 30 assets or fewer, Bulk Extended applies changes and marks affected packages dirty for normal saving.

For more than 30 supported assets, Auto Safe Batch Save activates automatically:

• Chunk size: 15 assets.
• Static Mesh compilation is drained per chunk when required.
• Dirty packages are saved silently.
• Garbage collection and cleanup run between chunks.
• Failures are collected without aborting the entire batch.

Expensive Unreal operations can take time.

Distance Fields, Nanite rebuilds, shader-permutation changes, texture processing and Lightmass build settings can make large batches slow.

• Test one to five representative meshes before large Distance Field changes.
• Avoid rebuilding settings that are already correct.
• Use smaller themed batches while validating a new workflow.
• Let compilation and saving complete before closing the editor.
• Make sure files are writable before large batches; automatic Source Control checkout is not performed.