Pixel Motion Lab

Prepare, preview and export pixel-art sprite animations from PNG frames or spritesheets.

Pixel Motion Lab is a lightweight offline tool built for developers and pixel artists who need a simple way to turn existing sprite artwork into clean, game-ready animation files.

Import individual PNG frames or slice a spritesheet, organize your animation, adjust timing and alignment, preview it with optional Game Feel effects, then export the version you need.

Import & Build

• Import multiple PNG frames
• Import and slice regular PNG spritesheets
• Reorder, duplicate, delete and reverse frames
• Automatic grid detection once Frame W / H are defined
• Support for transparent PNGs and mixed-size frames

Animation Controls

Choose between:

• Uniform FPS
• Per-frame timing
• Loop
• Once
• Ping-Pong playback

You can also adjust:

• frame alignment
• individual X / Y offsets
• canvas size
• padding
• Auto Fit

Game Feel Preview

Add optional effects directly to your animation preview:

• Bob
• Shake
• Squash / Stretch
• Hit Flash
• Ghost Trail

These effects are designed to help you quickly explore how a static sprite animation could feel in motion.

New in V1.1 — Two Export Workflows

You no longer need to disable your preview effects before creating a clean game asset.

Game Ready

Export a single ZIP containing:

• a clean horizontal PNG spritesheet
• matching JSON metadata

Game Feel effects and FX-only margins are automatically ignored during this export.

Your current preview settings remain untouched, so you can keep working with your effects enabled.

Preview GIF

Export an animated GIF with your currently active Game Feel effects baked directly into the animation.

Useful for:

• itch.io pages
• portfolios
• sharing progress
• quick animation previews

GIF export uses a 256-color palette and does not preserve full PNG-style alpha transparency.

Individual Exports

You can still export separately:

• Spritesheet PNG
• PNG Frames ZIP
• JSON Metadata

Local & Offline

Pixel Motion Lab runs entirely in your browser after download.

• No installation
• No account
• No internet connection required
• No sprite uploads
• Your files stay on your computer

Simply extract the ZIP and open index.html in a modern desktop browser.

Current Scope

Pixel Motion Lab is a focused sprite-animation workflow tool.

This is V1.1, and the tool can continue to evolve from real-world feedback.

If something slows down your workflow or there is a feature you would genuinely use, let me know in the comments.