http://www.tcl.tk/man/tcl8.4/TkCmd/photo.htm A photo [image] is the means that Tk uses to display full color images. Tk comes with support for GIF, PPM, and PGM formats, as well as a format to hook in code for other formats. The [Img] extension provides additional full color image formats. [Photo image rotation] - [Image scaling] ---- [DKF]: Although [Tk] can't load images with rich alpha channels (i.e. non-trivial transparency effects like you get with some [PNG] images) it can display them from 8.4 onwards. [LV]: Is the distinction between ''load'' and ''display'' that you make here a difference between minimally displaying the content versus displaying the content with the transparency effects? [DKF]: No. ''Load'' is the process of getting the image data created in memory from a file, and ''display'' is the putting of the image on the screen (including all transparency effects, if they're present). ---- [[[Tk syntax help]|[Arts and crafts of Tcl-Tk programming]|[Category Command]]]