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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Wilberforce
The other option you have is to have a bootstrap script that you run first, that saves the large btoa image as an array into with Storage.write. This can be run once to save the data, and then the main script just pulls a reference to this in flash and won’t consume any valuable ram.