All valid journals have a specific standard for the percentage of manuscript text overlapping with various sources. Generally, if the “duplicate sentences” are 6% higher than the normal rate, the article will be rejected without undergoing review.
Having a high percentage of plagiarism, the journal puts the author’s name (due to copying) in its blacklist. There are various software and sites that can be used to obtain the percentage of plagiarism of articles before submitting an article in different journals. If necessary, the manuscript should be edited to reduce the similarity rate to 6%. One of the specialist services of our group, which increases the chance of acceptance of your article in specialized and accredited journals, is the study of similarity (checking plagiarism) and the quality of articles.