Godot Asset Pipeline Doctor

CI-friendly PNG, audio, and Godot .import checks for pixel-art and mobile asset pipelines.

Use this before merging sprites, UI art, icons, backgrounds, sound effects, or other asset-heavy changes. It checks for import settings and asset shapes that commonly cause blurry pixel art, color fringes, large packages, or mobile memory surprises.

The tool is designed for generic Godot projects, including private commercial games. Public examples use placeholder project names and do not require publishing project-specific content. It does not need the Godot editor and does not run project scripts.

What It Catches

• Missing Godot .import metadata next to PNG assets.
• Mipmaps enabled on pixel-art profile assets.
• Alpha-border fixing disabled on transparent assets.
• Fully transparent edge pixels that still contain RGB color data.
• Large textures that are risky for Android/mobile memory budgets.
• Very large texture dimensions that may exceed conservative device limits.
• Unexpectedly large palettes in pixel-art folders.
• Sprite manifest dimension mismatches and out-of-bounds anchors.
• Large or long audio clips that need compression or streaming review.
• Missing Godot .import metadata next to audio files.

Install

From a local checkout:

python -m pip install -e .

From PyPI:

python -m pip install godot-asset-pipeline-doctor

Quick Start

Scan a Godot project with the default profile:

godot-asset-doctor C:\Projects\ArcadePrototype

Strict pixel-art check:

godot-asset-doctor C:\Projects\ArcadePrototype --profile pixel-2d --fail-on warning

Android/mobile check with JSON output:

godot-asset-doctor C:\Projects\ArcadePrototype --profile android-mobile --format json --output asset-report.json

Audio-focused mobile check:

godot-asset-doctor C:\Projects\ArcadePrototype --profile audio-mobile --large-audio-mb 6 --max-audio-duration-seconds 90

Exclude generated or vendor folders:

godot-asset-doctor C:\Projects\ArcadePrototype --exclude "addons/vendor/**" --exclude "assets/generated/**"

Validate a sprite manifest:

godot-asset-doctor manifest check sprite-manifest.json --project C:\Projects\ArcadePrototype --format json --output reports\sprite-manifest.json

Create a sprite contact sheet with anchor markers:

godot-asset-doctor manifest contact-sheet sprite-manifest.json --project C:\Projects\ArcadePrototype --output reports\sprite-contact-sheet.png

Create per-sprite overlay PNGs for closer anchor review:

godot-asset-doctor manifest overlays sprite-manifest.json --project C:\Projects\ArcadePrototype --output-dir reports\sprite-overlays

Example contact sheet:

Example per-sprite overlay:

Run through Python after installing the package:

python -m godot_asset_doctor examples\tiny-godot-project --fail-on none

Real Workflow: Review New Art Before A Merge

Run a strict pixel-art scan when a pull request changes assets/, sprites/, or ui/:

godot-asset-doctor . --profile pixel-2d --fail-on warning --format json --output reports\asset-doctor.json

Use the findings to catch:

• pixel art imported with mipmaps enabled;
• transparent sprite edges that can show colored fringes;
• missing .import files that mean assets have not been opened by Godot yet;
• unexpectedly large textures before they land in the main branch.
• sprite anchors that fall outside the source PNG bounds.
• sprite contact sheets that make anchor placement easier to review.

For Android-focused review, switch profile:

godot-asset-doctor . --profile android-mobile --fail-on error --format sarif --output reports\asset-doctor.sarif

Profiles

Exit Codes

Config File

Create .godot-asset-doctor.toml in the project root:

profile = "pixel-2d"
format = "json"
fail_on = "warning"
output = "asset-report.json"
exclude = ["addons/vendor/**", "assets/generated/**"]
max_texture_dimension = 4096
large_texture_mb = 16
max_palette_colors = 256
large_audio_mb = 8
max_audio_duration_seconds = 120

Then run:

godot-asset-doctor C:\Projects\ArcadePrototype

CLI flags override config values. Use these thresholds when your project needs stricter mobile budgets or a looser palette limit for UI art. See docs/CONFIGURATION.md.

Example Output

Godot Asset Pipeline Doctor
Report schema: 1.1 | Tool: 0.1.10
Root: C:\Projects\ArcadePrototype
Profile: pixel-2d
Assets: 18 | Issues: 3 | Errors: 0 | Warnings: 3

[WARNING] Transparent edge RGB data: C:\Projects\ArcadePrototype\assets\player.png
  4 fully transparent edge pixel(s) carry non-black RGB values.
  Why it matters: Fully transparent edge pixels carry RGB data that can bleed into visible edges after filtering.
  Suggestion: Clean transparent RGB data or enable alpha-border fixing to reduce fringe artifacts.

JSON reports include report metadata plus a rules object with plain-language rule titles and explanations. Text and SARIF output use the same rule names so local and CI reports are easier to compare.

Documentation

• Rule reference
• Configuration
• Pixel-art workflow
• Mobile texture guide
• Audio asset guide
• Sprite manifests
• CI usage
• Troubleshooting

Tests

python -m unittest discover -s tests -v

CI

The included GitHub Actions workflow installs the package and runs the test suite on Python 3.11, 3.12, and 3.13.

In a project CI job, install from PyPI and keep the report as an artifact:

- run: python -m pip install godot-asset-pipeline-doctor
- run: godot-asset-doctor . --profile android-mobile --format json --output reports/asset-doctor.json

Design Notes

• The scanner does not need a Godot binary.
• The scanner does not execute project scripts.
• The scanner does not upload files or contact external services.
• Default scans ignore common non-asset artifact folders such as docs, logs, and test-results.
• JSON reports can include local paths, so review them before sharing publicly.

License

MIT. See LICENSE.