Data Scraping from different webpages and integrate with MongoDB

I Scraped data from 10 different Main URLs… which contains EventName, EventDate, EventURL…Now I need to Scrape the logo & find registration page from EventURL… Which is 500 Websites in turn of different format and store all these data in MongoDB…What technique can i use to find the logo & registration page from 500 websites of different format and update in MongoDB?

I think your best option is manipulating the HTML of those webs, you could also try looking in the page for the words sing up, sing in etc.
As for the logos, maybe look for the fav-icon ?