image_size (rubygems): Measure following file dimensions: apng, avif, bmp, cur, emf, gif, heic, heif, ico, j2c, jp2, jpeg, jpx, mng, pam, pbm, pcx, pgm, png, ppm, psd, svg, swf, tiff, webp, xbm, xpm
Keywords: image-dimensions|image-format|ruby