img-diff
Get the difference between two images
with minimal dependencies.
It depends only on libpng
.
Warning: img-diff is experimental. You can help us improve it by testing it and contributing!
usage
Install: npm install img-diff
Diff
require 'img-diff'tolerance = 0.0 # percent allowed to be different image1 = '' # base64 png string image2 = '' # base64 png string imagesMatch image1image2tolerance
If the images don't match and are outside the tolerance, an error is thrown that contains both images as well as a diff image. The diff image can be saved to disk in order to see the difference.
Crop
require 'img-diff'image = '' # base64 png string section = x: 10 y: 10 width: 100 height: 100croppedImage = crop imagesection