Sprite Delta

See what changed in your sprite exports.

Sprite Delta helps you compare two Aseprite exports before replacing assets in your game. Review artwork, frame timing and animation-tag differences, inspect individual frames, and save a report to share with your team.

Useful when you’re checking a revised animation, reviewing an artist’s delivery, or confirming that repacking a sprite sheet hasn’t changed its appearance.

What you can compare

• Artwork changes: inspect before-and-after frames to see visual differences.
• Frame timing: spot changes that affect how quickly an animation plays.
• Animation tags: review changes to named animation groups and their frame sequences.
• Repacked frames: distinguish unchanged artwork from changes to its position or trimming within the sprite sheet.
• Unmatched frames: see which frames need your attention when the exports don’t line up.

Sprite Delta reconstructs frames on their original canvases, so an image moving elsewhere in the sprite sheet doesn’t automatically count as an artwork change. Uncertain matches are marked for review.

How to use it

1. Unzip the download and open Sprite-Delta.html in your browser.
2. Load the Before PNG sprite sheet and its matching JSON file.
3. Load the After PNG sprite sheet and its matching JSON file.
4. Choose the appropriate frame-mapping option and compare the exports.
5. Inspect the changes and download a JSON or CSV report if needed.

Demo files are included so you can try the workflow before loading your own artwork.

Local and offline

Your files are processed locally on your computer. No artwork uploads, account activation or ongoing internet connection are needed. Sprite Delta reads your exports without changing the original files.

Supported files

Requires Aseprite PNG sprite sheets with JSON-array metadata. Include animation-tag metadata to compare tags. Native .aseprite project files and JSON-hash exports are not supported. This is a comparison tool; it does not edit or automatically repair your assets.

What’s included

• The standalone Sprite Delta browser tool
• Original demo PNG and JSON files
• A short getting-started guide
• A license for one user, with unlimited personal and commercial projects