Unique content is one of the important criteria to help Google in the assessment and ranking of your website with good rank. How to check your content for originality or check for plagiarism are the questions that many webmasters want to find the answer!

I often use tools to check for plagiarism http://smallseotools.com/plagiarism-checker/, this is completely free tool that does not require you to register for using. Although limited to 1500 words for checking, but the speed is quite impressive.

This article I share with you some free tools that helps you check for duplicate content pretty well, you can try and let me know your idea for each:

1. http://smallseotools.com/plagiarism-checker/

2. www.plagiarismchecker.com

3. www.duplichecker.com

4. www.plagium.com

5. www.dustball.com/cs/plagiarism.checker/

6. http://plagiarisma.net

7. http://www.plagtracker.com/upload/

8. www.articlechecker.com

9. http://paperrater.com/plagiarism_checker

10. www.plagspotter.com

11. www.copygator.com

12. www.virante.org/seo-tools/duplicate-content

13. http://plagiarismcheck.org/

14. http://en.plagiarismdetect.com/

15. http://doccop.com/index.html

16. https://www.thepensters.com – Thepensters offers the new and free plagiarism checker: use it to be sure your paper is original.