node package manager

pixel-compare

pixel-compare

compare pixel of image for PNG, JPEG or DataURL.

example

const pixelCompare = require("pixel-compare");
pixelCompare({
    baseImage: "./test/test-images/dragon1.png",
    testImage: "./test/test-images/dragon2.png",
    outputImage: "./test/output-images/result.png"
})
.then(isSame => {
    //if two images are the same 
});

If you want to compare multiple images to same based images, you can do this.

const pixelCompare = require("pixel-compare");
pixelCompare({
    baseImage: "./test/test-images/dragon1.png"
})
.then(baseImageCompareable => {
    baseImageCompareable({
        testImage: "./test/test-images/dragon2.png",
        outputImage: "./test/output-images/result1.png"
    });
 
    baseImageCompareable({
        testImage: "./test/test-images/dragon3.png",
        outputImage: "./test/output-images/result2.png"
    });
});
Base Image Test Image Result Image

install

npm insatll --save pixel-compare

api

pixelCompare({ baseImage, testImage, [outputImage], [baseColor], [testColor] })

  • baseImage: based image path or data url

  • testImage: test image path or data url

  • outputImage: is optional, output image path

  • baseColor: is optional, array of 4 for base color when test color is all 0

  • testColor: is optional, array of 4 for test color when base color is all 0

return a promise with a boolean to indicate if two images are the same.