PIXELKIT TOOLS · M10
AlphaReady
Trim excess transparent edge, keep soft shadows, and drop a batch of PNGs into one canvas.
Worked example
A 100×100 sticker PNG whose only opaque pixels sit between (10,20) and (29,49).
- Drop the file with the threshold left at 0 and the margin at 0.
- The report shows a 20 × 30 content box at (10, 20) and a 20 × 30 output.
- Set the margin to 5 and run again: the output becomes 30 × 40 with a transparent border.
Content box 20 × 30 at (10, 20); with a 5 px margin the output is 30 × 40.
Scope and limits
- Static 8-bit PNG only: animated PNG (APNG) and 16-bit PNG are refused, never silently converted.
- A threshold above 0 can cut away soft shadow edges; the preview marks exactly what is lost.
- While nothing is scaled the content RGBA bytes are preserved exactly; after scaling they are not.
- A target size is verification only. PNG has no quality setting, so no size is promised.