From this question:-
and some other questions/google I got some results like:--
Can you suggest me something really fast and powerful. I am ready to pay for it. Isnt google providing any api for it? as they are showing screenshots in results.
EDIT:-- Also I need something which capture complete home page. Not just one screen.
wkhmltopdf is the best API I've seen so far for that kind of stuff. it uses the Webkit rendering engine.
http://code.google.com/p/wkhtmltopdf/
http://code.google.com/p/wkhtmltopdf/wiki/IntegrationWithPhp
Here's the manual for wkhtmltoimage:
http://madalgo.au.dk/~jakobt/wkhtmltoxdoc/wkhtmltoimage_0.10.0_rc2-doc.html
Following SleepyCod lead. I got the solution.
Following these links you can setup a high quality pdf's gems and plugins installation guide.
Same way you can generate PNG's too. :-)