Plagiarism check and ethical similarity reduction
Almost every journal screens submissions with similarity-checking software, and a high or concentrated match can mean desk rejection before an editor reads your science. We check first, then help you fix the overlap honestly, by writing, quoting and citing properly.
Why manuscripts get flagged
Similarity software (journals typically use Crossref Similarity Check, which is powered by iThenticate, while many universities use Turnitin or approved tools such as DrillBit) compares your text with published articles, web pages and institutional repositories. A match is not automatically plagiarism, but editors must investigate it. The commonest causes in medical manuscripts are not deliberate copying:
- Thesis overlap: the manuscript reuses text from the author's own thesis, which is already in a repository.
- Patchwriting: sentences from source papers lightly rearranged, especially in the introduction and discussion.
- Unquoted definitions: disease definitions or guideline wording copied without quotation marks.
- Recycled methods: methods text reused from the authors' earlier papers without citation.
- Missing citations: correctly paraphrased ideas whose source was never cited.
How we reduce similarity the right way
- Initial report: we run the similarity check and review every match, separating acceptable overlap (references, standard phrases, properly quoted text) from overlap that needs work.
- Source analysis: matches are grouped by source, because a large block from one paper matters far more than scattered common phrases.
- Rewriting: flagged passages are rewritten in the authors' own scientific voice, keeping the meaning exact. Where wording must stay (a definition, a guideline statement), it is quoted and cited instead.
- Citation repair: missing citations are added for ideas that come from other work, and the reference list is audited for accuracy.
- Final report: a second check confirms the result, with notes on any remaining overlap and why it is acceptable.
Similarity limits for Indian theses
For theses and dissertations at UGC-regulated institutions, the UGC Regulations, 2018 on academic integrity define four levels of similarity, excluding quoted, cited and standard content:
| Level | Similarity | Consequence for students (summary) |
|---|---|---|
| Level 0 | Up to 10% | Minor similarity; no penalty |
| Level 1 | Above 10% to 40% | Revised script to be submitted within a set period |
| Level 2 | Above 40% to 60% | Debarred from submitting a revised script for one year |
| Level 3 | Above 60% | Registration for the programme cancelled |
Summary only; read the official regulations and your university's policy, which may be stricter. Journals apply their own standards.
What we will not do
We do not use automated "spinner" paraphrasing, character substitution, hidden text or any method designed to defeat detection rather than remove copying. Those methods are recognisable to editors and are treated as misconduct. If a section has been substantially copied, we will tell you plainly and help you rewrite it. Read our guide to reducing similarity ethically for the techniques we use.
Related services and guides
Check your manuscript before the journal does
Upload the manuscript or thesis chapter. We return the similarity analysis, a fixed quote and a plan within one working day.
Submit Your ManuscriptPlagiarism check: common questions
What similarity percentage is acceptable for a journal?
There is no universal cut-off. Editors look at what matched, not just the total: overlap in methods descriptions, standard phrases and correctly quoted, cited text is treated very differently from copied introduction or discussion paragraphs. A low overall score with one large block copied from a single source can still lead to rejection. Many journals start looking closely above roughly 15–20%, but always check the journal's own policy.
What are the UGC plagiarism levels for theses?
The UGC (Promotion of Academic Integrity and Prevention of Plagiarism in Higher Educational Institutions) Regulations, 2018 define similarity up to 10% as minor (Level 0), above 10% to 40% as Level 1, above 40% to 60% as Level 2 and above 60% as Level 3, with increasing consequences. These thresholds apply to theses and dissertations at UGC-regulated institutions; universities may set stricter rules, and journals apply their own policies.
Why does my thesis-derived manuscript show high similarity?
If your thesis was deposited in a university repository or Shodhganga, similarity software may match the manuscript to it. Journals generally accept that an article derives from the author's own thesis, but expect the article to be freshly written and the thesis to be disclosed. Rewriting the manuscript, rather than copying thesis text, resolves most of this.
Do you use paraphrasing tools or character tricks to beat the software?
No. Automated paraphrasing produces distorted scientific meaning, and tricks such as replacing letters with look-alike characters are detected and treated as misconduct. We reduce similarity by genuinely rewriting, quoting or citing, which is the only approach that holds up if an editor reads the matched sources.
Is self-plagiarism a problem?
Reusing your own published text without disclosure (text recycling) or publishing the same results twice (duplicate publication) can breach journal policy. Methods descriptions may sometimes be reused with citation where the journal allows it. We flag such overlap and advise on disclosure.