How do I know if my content is unique?

[anjali raghav]

How do I know if my content is unique?

[vivabeautyparlo]

Tools to check for plagiarism and ensure your content is unique
Copyscape is perhaps the best-known plagiarism checker tool. ...
Siteliner is a website analysis tool from Copyscape which is useful for identifying duplicate content (and other potential problems like broken links) within your own site.