how to know whether your site got penalty or drop through broken links?

[omthavertch]

how to know whether your site got penalty or drop through broken links if there is no webmaster?

[RobbieLima]

You can not check out through the Google. Some tools are available but not get you proper information so there is only one way to find and its GWT. if your site is penalize by Google than you will get notification or message in GWT.