Hi,
When i upload a pixelart image to wled (14.0-b5), the image uploads ok, and I can save it as a preset. The problem occurs when I try to run the preset. I just causes WLED to crash and stop working. I have tried several different images with the same result.
Just to try to replicate , which tool you are using ,This ?GitHub - ajotanc/PixelMagicTool: It is a tool that converts any image into code in JSON WLED format, currently being tested on a 2D Matrix panel, soon I will post news for the serpentine version.
I was using pixel art converter. I downloaded your ink, and hey presto, it works. Thank You so much.
Jim
PixelMagic is included with every WLED install since 0.14.0-b3. No need to download from external sources.
use http://wled.local/pxmagic.htm
Yeah hidden feature as there is nothing in ui to tell about http://wled.local/pxmagic.htm . Even no file under /edit
Waiting for the documentation guys to step in… 
Yeah every one can do docs
as can everyone do the C++
not everyone is willing, though
Yeah sometime people do what they like regardless of others wishes