Gentree for aseprite

Gentree - Procedurally generates trees and foliage in Aseprite.

Gentree is an Aseprite extension that procedurally generates pixel art trees and foliage using customizable parameters and presets.

It’s designed to help you quickly create natural‑looking trees, forests, and vegetation for pixel‑art environments, tilesets, and game assets, while still keeping the process artist‑driven and editable.

Includes ready‑to‑use presets for fast iteration, plus a Forest Mode for generating multiple trees at once.

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Quick Start

1. Open Gentree: Go to View> Gentree in aseprite's top menu.
2. Select a layer (important for Single Layer mode)
3. Select any tree from the preset.
4. Click Generate
5. Tweak values and regenerate until satisfied

 You can also make a small selection to control where the tree is generated.

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New in Version 1.2.0

• Added a new Decor Tab to place fruits and decorative elements on your trees.
• Added a dedicated Root option for generating trunk roots.

⚠ If you have created presets, please export them before updating to avoid losing them.

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Trunk and Branch Tab

Controls the overallshape, thickness, and curvature of the trunk and branches.

• Trunk Height - Overall height of the main trunk.
• Branch Length – Average length of each branch.
• Trunk/Branch Points - Number of points used to form each path.
  • Higher values produce smoother, more natural curves.
• Trunk/Branch Curve - Controls how much the trunk or branch bends.
• Thickness Start / End - Controls tapering from base to top.
• Flip Shadow - Flips the light/shadow direction.
  
• Trunk Textured - Adds bark-like lines to the trunk.
  

Structure & Complexity

Controls how dense and complex the tree becomes.

• Branch Amount -Number of branches on the trunk.
• Branch Fork -How often branches split.
• Branch Levels -Maximum recursion depth (tree complexity).
• Combine Trunk & Branch -Merges branch and trunk into the same layer.
• Offset & Direction - Controls the offset & direction of leaf highlights and shadow

High depth + high branch amount can get dense fast.

Leaves Tab

Controls leaf placement and style.

• Leaf Density - Number of leaf clumps.
• Cluster Size - Radius of each leaf cluster.
• Leaf Size - Size of individual leaves.
• Leaf Type - Shape used for leaves (round, triangle, etc.).
• Shade Variation - Adds subtle color variation for depth.
• Custom Leaf Type Mode:
  • Column&Row - Splits the sheet into frames.
  • Custom Size Min/Max - randomly scales each leaf.
  • Custom Color - recolors the sprite using the selected leaf color.

Use customleaf image:

Colors & Extras

• Leaves Color - Base leaf color.
• Wood Color - Trunk and branch color.
• Outlined - Adds pixel outlines.
• New Layer - Forces generation onto a new layer.

Forest Mode

Generates multiple trees inside a selection.

• How it works:
  1. Make a horizontal rectangular selection
  2. Enable Forest Mode
  3. Set number of trees
  4. Click Generate

Trees are spaced with controlled randomness for a natural look.

Layering Modes

Choose how generated elements are organized.

1. Single Layer (Recommended)
   1. Draws on the currently selected layer
   2. Regeneration overwrite the same layer
   3.  - Select a new layer if you want to keep the current tree.
2. Separated
   1. Creates individual layers:
      1. Trunk, Branch, Foreground Leaves, Background Leaves
   2.  - Group the four layers to keep the tree intact.
3. Group the four layers to keep the tree intact.
4. Grouped
   1. Same as Separated, but inside a group
   2. Cleaner organization for complex scenes
   3.  - Rename the group if you want to keep multiple trees.

Presets

Presets let you instantly switch between different tree styles.

• Built-in presets for quick results
• Select a preset to instantly apply settings
• Create your own presets
• Default presets cannot be deleted or overwrite

Presets are great for exploring variations or getting a solid base before polishing by hand.

Create Preset:

Import/Export Preset:

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Tips & Best Practices

• Start with a preset, then tweak values to taste
• Begin simple: low depth, fewer branches
• Increase complexity gradually
• Use Single Layer mode while experimenting
• Flip Shadow to match scene lighting

Gentree is designed to feel procedural, but artist-driven.

It doesn’t replace hand-drawn trees, it gives you a strong, editable starting point that you can tweak, polish, and make your own..

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Feedback & Support

I’d love to hear your thoughts and see how you’re using Gentree in your projects! Drop a comment or contact me directly for questions, suggestions, or just to share your amazing art.

If you find this tool helpful, I'd really appreciate if you could take a moment to leave a rating. Thanks a lot!

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See Also

Art Assets

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Gentree License Agreement

By downloading, installing, or using the Gentree extension, you agree to the following terms:

1. Grant of Use
   • You are granted a non-exclusive, non-transferable license to use Gentree for personal, professional, and commercial projects.
2. Restrictions
   • You may NOT:
     • Resell, sublicense, redistribute, share, or transfer the extension, in whole or in part, to any third party.
     • Repackage or include the extension as part of another asset, script, or product.
     • Modify and distribute modified versions of the extension.
     • Claim ownership of the extension or any portion of its source code.
3. Ownership
   • All intellectual property rights in Gentree, including source code, design, structure, and functionality, remain the exclusive property of Devkidd.
4. Personal Modifications
   • You may modify the extension for personal use only.
   • Modified versions may not be shared, distributed, or sold.
5. No Warranty
   • This extension is provided "AS IS", without warranty of any kind.
   • The creator shall not be liable for any damages, data loss, or issues resulting from its use.
6. Attribution
   • Attribution is appreciated but not required when sharing content created using Gentree.
7. License Updates
   • Devkidd reserves the right to revise this license for future versions.
   • Updated terms apply only to new downloads or updates.

Copyright © Devkidd 2024–2026. All Rights Reserved.