How to find Broken And low quality Links..?

Broken and low quality backlinks can be checked using various online tools. These links are generally disavowed using Google disavow tool. Disavow tool is used to disavow links that are harmful for your website. These links are excluded from ranking your website in search engines.

For Broken Links , there are different tools available in the market like W3C Validator and many more.....

And to find the Low Quality Links , here are some methods :

1. Identify as many linking root domains as possible using various backlinks data sources.
2. Check the ToolBar PageRank (TBPR) for all linking root domains and pay attention on the TBPR distribution
3. Work out the percentage of linking root domains that has been deindexed
4. Check social metrics distribution (optional)
5. Repeat steps 2,3 and 4 periodically (e.g. weekly, monthly)