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Ertugrul
Ertugrul

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OpenAnima v1 — Open-Source Desktop Overlay Engine for Windows

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OpenAnima v1 — Open-Source Desktop Overlay Engine for Windows

After months of building, experimenting, rewriting systems, debugging strange desktop issues, and testing different asset formats, OpenAnima v1 is finally out.

OpenAnima is an open-source desktop overlay engine for Windows that lets you place animated assets directly onto your desktop.

You can use:

  • GIFs
  • Static images
  • Sprite strips
  • Spritesheets
  • Frame-folder animations
  • RPG-style HUD elements
  • Transparent animated assets
  • Pixel-art characters
  • Desktop companions

The goal of the project was simple:

Create a lightweight desktop overlay system that feels flexible, customizable, and fun to experiment with.

What OpenAnima Can Do

OpenAnima allows you to spawn movable overlay windows directly on top of your desktop.

Each overlay can be:

  • dragged freely
  • resized
  • locked in place
  • made click-through
  • set always-on-top
  • adjusted for opacity
  • animated with custom FPS settings

The application also restores overlay states between sessions, so your desktop setup persists after restarting the app.

Supported Asset Types

One of the biggest goals of the project was supporting multiple animation workflows instead of only GIFs.

Currently supported:

  • GIF animations
  • Static images (.png, .jpg, .webp)
  • Frame-folder animations
  • Horizontal sprite strips
  • Vertical sprite strips
  • Spritesheets with metadata
  • Basic HUD/UI overlay assets

The engine also includes an asset analyzer system that tries to detect asset types automatically.

Built With

OpenAnima is primarily built using:

  • Python
  • PyQt6
  • QMovie / QPixmap rendering systems
  • Custom animation parsing logic

A lot of time went into handling edge cases like:

  • hidden overlays
  • broken configs
  • off-screen windows
  • click-through recovery
  • corrupted animation states

v1 focuses heavily on stability and recovery tools.

Features Added During Development

Some systems added throughout development:

  • Persistent overlay state saving
  • Safer config recovery
  • Recovery tools for invisible overlays
  • Logging system
  • Diagnostics panel
  • Asset metadata support
  • Import wizard
  • Sprite animation handling
  • Basic layered UI rendering
  • System tray controls

Why I Built It

I always liked desktop customization tools, animated desktop companions, game HUD overlays, and lightweight desktop effects.

Most existing solutions were either:

  • too limited
  • too complicated
  • too specific
  • abandoned
  • or focused on only one asset type

So I started experimenting with building my own system.

The project slowly evolved from “just display GIFs on desktop” into a more general desktop overlay engine.

Future Plans

Some ideas planned for future versions:

  • Better transparent video support
  • More advanced animation systems
  • Improved UI tools
  • Better performance optimizations
  • Asset marketplace/import improvements
  • More overlay interaction systems
  • Possible 3D asset support in the future

Download

Website / Download:

GitHub Repository:

itch.io Page:

Instagram:

Final Thoughts

OpenAnima started as a small side project and slowly became a much larger system than I originally expected.

There is still a lot to improve, but releasing v1 feels like a huge milestone for the project.

Feedback, ideas, bug reports, and experiments are always welcome.

I’m excited to see what people create with it.

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