This tool will allow you to convert any image accessible via a URL into a format compatible with the TRS-80 Model III with the Computer Graphics high resolution upgrade option. This format is also used in the Model II Computer Graphics and the Model 4 Computer Graphics packages so these generated images will work on all 3 of these TRS-80 platforms.
To display the images on your TRS-80, use the GLOAD program provided with the Computer Graphics software. The program listing of GLOAD in the Computer Graphics documentation is hopelessly broken so I rewrote it here GLOAD/ASM for those that are interested. It functions identically to the original GLOAD binary.
Here are a few examples of images generated by the tool