Images & texture design · focused workspace

Cubemap Face Atlas Builder

Arrange six square face images into a cubemap cross or strip, with an explicit face order and exported layout coordinates.

Before / after previewEditable projectsLocal processing

Source → inspect → export

Open project

Preparing the worked example…

Your source & settings

Settings & options

Start with your images

Order: +X right, -X left, +Y up, -Y down, +Z front, -Z back

Choose images

Upload still PNG, JPEG, WebP or BMP images. Source images are limited to 1,048,576 pixels and 4,096 pixels per edge. Multiple selected files must total at most 20 MiB. PNG exports retain computed RGBA values; source metadata and color profiles are not copied.

Inspect your result

PREVIEW & EXPORT

Output file

Show RGB without alphaSmooth preview

Know what changed

A 2D face-layout assembler, not equirectangular projection conversion. All six images must be the same square size. No face rotation is applied; engine conventions differ and may require rotation or flipping elsewhere.

Choose another output above or open Export files.

Explore the example

Arrange six square face images into a cubemap cross or strip, with an explicit face order and exported layout coordinates.

What you can inspect

Face placement — Face, File, X, Y, Size.

Keep the result you need

Use the output selector to inspect each generated file, then download it. Save a project to keep source inputs and settings together. Result files and editable projects serve different purposes.

Processing & file support

Your working session

Processing runs locally in a worker with a 30-second cancellation limit. Undo and redo keep up to 20 edits in this tab. Project files include imported assets and are limited to 40 MiB. There is no automatic saving.

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Using Cubemap Face Atlas Builder

Arrange six square face images into a cubemap cross or strip, with an explicit face order and exported layout coordinates.

Try the built-in sample, then choose your own supported files. The file order is +X right, -X left, +Y up, -Y down, +Z front, -Z back.
Adjust atlas layout. Change one setting at a time so you can understand its effect.
Choose “Assemble face atlas”. Inspect the visual comparison before using the result.
Download the selected output, inspect other files in Export files and save a project if you want to reopen the same inputs.

Example

Try the built-in example, inspect face placement and compare the result after changing one option.

Questions & answers

What does Cubemap Face Atlas Builder do?

Arrange six square face images into a cubemap cross or strip, with an explicit face order and exported layout coordinates.

What are the important limitations?

Can I save and reopen my work?

Yes. Save a project JSON file containing your inputs, settings and any imported assets. Projects are limited to 40 MiB. Undo/redo stores up to 20 edits in this session and is not saved in the project. There is no automatic saving.

How do imports and output previews work?

Upload still PNG, JPEG, WebP or BMP images. Source images are limited to 1,048,576 pixels and 4,096 pixels per edge. Multiple selected files must total at most 20 MiB. Text previews show up to 150,000 characters; downloads include the complete output. Tables show 50 rows per page; CSV files include all rows.