Description of DeIMG program at Mac Shareware: This application allows web authors to offer superior support for users who rely on browsers which support tables but not images. PNG, TIFF, JPG, GIF and PDF files can be imported.

This application allows web authors to offer superior support for users who rely on browsers which support tables but not images. PNG, TIFF, JPG, GIF and PDF files can be imported. Drag the image file onto DeIMG's icon, or into the image well on the left of its window. A HTML table describing the image using cell background colours appears in the right-hand field. A large image may take some seconds to translate. Use the "Cell size" control to set the table's resolution. Pre-shrinking images and compensating with a larger cell size trades some sharpness for a smaller file. This table can be copied and pasted into a webpage's source. Alternatively, the "Generate header" option creates a stand-alone HTML page

DeIMG is a completely free software. You can free download and use it as long as you like.