@jimp/plugin-threshold

Lightens an image.

This is useful as a simplified method for processing scanned drawings, signatures, etc ## Usage - @param {number} options object - max: A number auto limited between 0 - 255 - replace: (optional) A number auto limited between 0 - 255 (default 255) - autoGreyscale: (optional) A boolean whether to apply greyscale beforehand (default true) - @param {function(Error, Jimp)} cb (optional) a callback for when complete ```js import jimp from 'jimp'; async function main() { const image = await jimp.read('test/image.png'); image.threshold({ max: 150 }); // or image.threshold({ max: 200, replace: 200, autoGreyscale: false }); } main(); ```