Convert html to pnm Online: html2pnm
You can use Tom's Editor to easily convert images from
HTML Table Image .HTML to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
HTML Table Image is an image format with extension HTML.
PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.