Browser-only utility
Pixel Asset JSON Tool
Prepare a cropped, palette-controlled PixelAsset JSON file in the browser.
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Drop image here
JPG, PNG, or WebP · Max 20MB
Auto-compressed before processing
Selection
Upload an image
No crop 0 colors Max 65,536 px
Output size
JSON size 16x16 256 px
Remove BG
No background color selected
Click a source color below to turn matching pixels transparent.
Palette 16 colors
No palette
0 locked source colors
Asset details
JSON
Generated asset preview
No asset 16 target 0 locked