Fuss-Free Browser Apps — Sprite Rotation Tool

Sprite Rotation Tool

Rotate a sprite through a full 360° and export the results as individual frames or compact sprite sheets. Ideal for pixel-art games, AGS projects and modern engines like Unity, Godot and GameMaker.

Step 1

Load sprite

Choose a single sprite image. PNG with transparency is ideal, but other standard image formats work too.

Sprite image (PNG, JPG, WEBP, GIF, etc.)

The tool rotates the sprite around its centre. The output frames are padded so that no corners get clipped.

No image loaded yet.

Step 2

Rotation settings

Pick how many frames you want and how they’re spaced around the full 360°.

Angle per frame Number of frames (360°)

Angle between frames (degrees)

Must divide evenly into 360° (e.g. 10, 12, 15, 20, 24, 30, 45, 60, 90…). The tool will generate a full 360° loop.

Rendering mode

Enable smooth anti-aliasing (better for HD art; leave off for crisp pixel art).

Background handling

Leave as-is Make corner colour transparent

360° / 15° → 24 frames

Step 3

Preview & export

Scrub through the generated frames to check the rotation looks right before exporting.

No frames yet.

Sprite sheet

Choose a grid layout and build a single sprite sheet image.

Layout (columns × rows)

No sheet yet.

Frames are packaged into a single ZIP containing individual PNG files (with transparency if enabled).

Guide

FAQ & usage tips

Pixel-perfect (smoothing off) keeps hard edges and chunky pixels. Use this for:
- Adventure Game Studio (AGS) backgrounds and objects in low-res games.
- PICO-8 / GB-style engines and retro tile-based games.
- Any sprite that will be scaled with “nearest neighbour” in your engine.
Smoothing on blends edges slightly and reduces stair-step artefacts. Use this for:
- HD art going into engines like Unity, Godot or GameMaker where sprites are drawn at 1:1 scale or with filtering.
- UI icons or effects where you prefer softer edges to crunchy pixels.
You have two main options here:
- Leave as-is – best when your sprite already has a proper alpha channel (transparent PNG) or you plan to do manual clean-up in an editor like Aseprite, GIMP or Photoshop.
- Make corner colour transparent – the tool samples a corner pixel and turns all similar pixels fully transparent in every frame (colour-keying).
This is useful when you’ve drawn on a solid background colour:
- For AGS, you can import the resulting PNGs and rely on alpha transparency, avoiding the need to pick a magic transparent colour in-engine.
- For engines that still key out a colour, pick the same solid background in your project and use the tool’s tolerance to remove it reliably.
Individual frames (ZIP of PNGs) are convenient when:
- You’re importing frames one-by-one into AGS as separate sprite slots or views.
- You want to post-process each frame in Aseprite (e.g. add highlights or tweaks by hand).
- Your build pipeline auto-packs sprites (e.g. Unity’s Sprite Atlas, some Godot / GameMaker workflows).
Sprite sheets are ideal when:
- You’re feeding a sheet directly into Unity, Godot, GameMaker or Phaser and defining the frame grid there.
- You want a single asset to drop into a shaders / VFX pipeline (e.g. rotating debris or projectiles).
- You’re targeting web engines that prefer texture atlases for performance.
It depends how you’re thinking about your animation:
- Use Angle per frame when you already know the step you want (e.g. 15° steps for a 24-frame loop).
- Use Number of frames when you care more about animation length – e.g. “I want 32 frames for a smooth spin” and let the tool calculate the degree step for you.
Most 8-bit style games look fine with 12–24 frames. For smoother rotation in HD engines, 24–48 frames can feel nicer, at the cost of larger sheets.
A common workflow is:
- Draw the base sprite in Aseprite (or similar) at your target resolution.
- Export a clean PNG with either a flat background colour or a transparent background.
- Use this tool to generate the rotated frames or sheet (with optional background keying).
- Re-import the sheet or frames into Aseprite if you want to polish individual angles, then export again for your engine.
This keeps all the heavy, repetitive rotation work in the browser and leaves your pixel editor for the creative tweaks.