The checks are the core of DeepTrawl. The checks tab contains checks which will be made on every page or css file in your site. This is what makes DeepTrawl unique - you aren't just checking one thing on one page, you're checking everything on every page.
This section of the guide exhaustively covers every check DeepTrawl has, and their settings. There are a lot of checks but remember: you're free to use as few or as many as you need to. Some users stick to Link checking only, others enable just about every check.
Check analytics code installed
Check copyright dates
Check last-modified date
Check for credit card numbers
Find social security numbers
Check for e-mail addresses
Find missing images
Check for links to local file and local images
Check for specific URLs in links