- [[JPEG/APP0]] JFIF - [[JPEG/APP1]] Exif - [[JPEG/APP12]] Ducky (Adobe private marker) * ImageMagick [#q9a9a182] - https://blog.aoirint.com/entry/2020/change_image_dpi_imagemagick/ > convert -density 72 -units PixelsPerInch IN.png OUT.png > identify -format '%x,%y\n' IN.png |