htmldoc is a powerful simple-to-use tool/utility, which converts HTML to Postscript, PDF or indexed HTML output.
# convert /var/www/html/html2img/grid.ps -crop 280×300+40+9 -modulate 100 -geometry 530×480 /var/www/html/html2img/grid.png
here convert is ImageMagick tool for manipulating images..
