Why do sprites sometimes 'jitter' or wobble during animation playback?

Sprite jitter typically occurs when cell width or height is offset by even 1 pixel, or if individual frames have uneven padding. Adjusting frame dimensions or anchor offsets aligns the pivot point.

How does CSS steps() timing function animate sprite sheets?

CSS animation-timing-function: steps(n) divides an animation duration into N equal steps without interpolating intermediate values, jumping cleanly from frame to frame along the background-position axis.

Does this tool support non-uniform or irregularly packed sprite sheets?

Yes. You can switch from standard grid mode to freeform cell mode, clicking and dragging bounding boxes around specific irregular character frames.

What is the benefit of ping-pong animation playback?

Ping-pong playback plays frames from 0 to N and then immediately reverses from N down to 0, which creates smooth idling and breathing loops with half the required frame assets.

Can I export sliced frames as separate PNG files?

Yes. The slicer allows you to download all frames packaged in a single ZIP file, with each frame named sequentially (e.g., frame_001.png, frame_002.png).

Creators & Video

2D Sprite Sheet Grid Slicer, Animation Previewer & CSS Keyframe Generator

Name: 2D Sprite Sheet Grid Slicer, Animation Previewer & CSS Generator
Author: AnshuTechy

Slice, animate, and debug 2D sprite sheets right in your browser. Configure uniform grids or custom cell bounding boxes, preview frame-by-frame loop animations at up to 60 FPS with onion skinning, and export CSS steps() keyframes or Phaser/Godot JSON metadata.Documentation & FAQs ↓

2D Sprite Sheet Grid Slicer, Animation Previewer & CSS Generator — Interactive Console

Runs locally in your browser • Instant output

2D Sprite Sheet Animation Grid & FPS Step Previewer

Step-frame sequencer, zoomable pixelated viewport, grid slice inspector & CSS @keyframes exporter.

Playback & Frame ScrubberFrame 1 / 8

Grid Dimensions & Speed

Animation Framerate (FPS)12 FPS

6 FPS (Retro 8-bit)12 FPS (Classic Anime)24 FPS (Cinematic)60 FPS

Total Sprite Frames8 frames

Frame Width (px)

Frame Height (px)

Pixel Zoom Scale:

Isolated Frame Animation Viewport (192x192px)

Sprite Sheet Grid Slice InspectorActive Slice: #1

Real-time bounding box indicates the sub-rectangle parsed by the CSS background-position sequencer.

Live CSS @keyframes Code Snippet

/* CSS Steps Animation for Sprite Sheet */
.sprite-character {
  width: 64px;
  height: 64px;
  background-image: url('spritesheet.png');
  background-repeat: no-repeat;
  background-position: 0 0;
  animation: play-sprite 0.67s steps(8) infinite;
  image-rendering: pixelated;
}

@keyframes play-sprite {
  from { background-position: 0px 0px; }
  to { background-position: -512px 0px; }
}

Step-by-Step Instructions

4 Steps to Completion

1Phase 1

Upload your sprite sheet image (PNG with alpha transparency recommended) or select a sample character.

2Phase 2

Specify frame width, frame height, total frame count, and any border spacing or offsets.

3Phase 3

Set playback speed in Frames Per Second (FPS) and choose playback mode (Loop, Ping-Pong, or One-Shot).

4Phase 4

Copy the generated CSS animation keyframe snippet, Phaser JSON texture atlas, or download individual sliced PNG frames.

Practical Use Cases & Real-World Scenarios

Game Developers Prototyping Pixel Art Assets

Test imported sprite sheets from itch.io or Aseprite to ensure cell alignment and eliminate frame jitter before game integration.

Frontend Web Designers Building Interactive UI Characters

Create lightweight, zero-dependency mascot animations using pure CSS background-position and steps() loops.

Indie Game Texture Packing & Atlas Auditing

Verify frame spacing, detect pixel bleed on transparent borders, and generate texture coordinate mappings for Godot or Phaser.

2D Sprite Sheet Grid Slicer, Animation Previewer & CSS Keyframe Generator

2D Sprite Sheet Animation Grid & FPS Step Previewer

Grid Dimensions & Speed

Step-by-Step Instructions

Practical Use Cases & Real-World Scenarios

Interactive Grid Slicing & Auto-Detection

Real-Time FPS & Loop Playback Controller

CSS steps() & Canvas Code Generator

Game Engine Atlas JSON Exporter

Frequently Asked Questions

15 Best Game Development Software in 2026

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