Plagiarism & Similarity Check for Research Papers
A professional iThenticate similarity report, with AI writing detection on request — the same platform journals and publishers use to screen manuscripts. Transparent per-page pricing, no subscription, and a report you can submit to a journal or university.
Submit Your Request Here
Attach your paper, choose the page band, and the similarity report comes back by email. No account to create and no subscription — you pay for the single report you need.
- Overall similarity index
- Source-by-source match breakdown
- PDF report with every match highlighted
- AI writing detection result (on request)
iThenticate is Turnitin’s Tool for Research Papers
Best for students
Best for researchers
Turnitin and iThenticate are made by the same company, and the difference is not quality — it is who each one is built for. Turnitin is the service most universities run for coursework and student submissions. iThenticate is Turnitin’s professional product for research: it searches subscription publisher content from Crossref, Elsevier, Springer, Wiley and others that the student edition does not reach, and it produces the report format that journal editorial systems expect.
There is a second, practical difference that catches authors out. A Turnitin class submission is normally stored in the student repository. Check your own manuscript that way and a later submission of the same paper can match against your earlier copy — your own work reported as plagiarism. iThenticate does not add documents to that repository, which is why researchers are told to use it for anything headed to a journal.
What Happens to Your Paper During a Similarity Check
Which One Is Better for Your Research?
The student edition universities run for coursework and thesis submission.
- Universities & CollegesWidely used across academic institutions for coursework and thesis submission.
- Similarity ReportIdentifies matched content and lists the sources it came from.
- AI DetectionFlags AI writing where the institution has the feature enabled.
- Student FriendlyDesigned around assignments, coursework and student theses.
- Easy to UseSimple interface and a straightforward submission process.
Choose it for an assignment or a submission your university asks for by name.
Turnitin’s professional edition for manuscripts headed to a journal or publisher.
- ResearchersBuilt for authors, scientists and scholars rather than students.
- Journal & Manuscript CheckingSuited to research papers, theses and work headed for publication.
- Publisher PreferredTrusted by leading publishers and journals worldwide.
- Advanced Similarity AnalysisDeep search across a vast database of scholarly and subscription content.
- Accurate & ReliableHigh accuracy where the result actually carries consequences.
This service uses iThenticate — the report a journal, university or publisher expects.
Short version. Submitting an assignment to your university → Turnitin. Submitting a paper to a journal, a thesis to a university, or a book to a publisher → iThenticate. This service uses iThenticate.
Similarity Check Price List
| Pages | Word Count | Price (₹ INR) |
|---|---|---|
| 25 Pages | 6,250 Words | ₹500 ₹20.00 / page |
| 50 Pages | 12,500 Words | ₹800 ₹16.00 / page |
| 100 Pages Most research papers | 25,000 Words | ₹960 ₹9.60 / page |
| 300 Pages Typical PhD thesis | 75,000 Words | ₹2,400 ₹8.00 / page |
| 500 Pages | 125,000 Words | ₹3,600 ₹7.20 / page |
| 1,000 Pages Book manuscript | 250,000 Words | ₹5,600 ₹5.60 / page |
| 5,000 Pages | 1,250,000 Words | ₹22,400 ₹4.48 / page |
| 10,000 Pages Institutional volume | 2,500,000 Words | ₹44,000 ₹4.40 / page |
Bands are calculated at roughly 250 words per page, so a 25,000-word paper sits in the 100-page band regardless of its margins or font size. Pick the band at or above your document’s length. Not sure which applies? Send the file to jwbook.org/similarity-check and it will be confirmed before anything is charged.
How to Check Your Paper for Plagiarism
1. Prepare the document
Export as Word (.docx) or PDF with the text selectable — a scanned image of a page has no text for the software to compare. Keep the references in; they are excluded from the score afterwards rather than deleted beforehand.
2. Submit the request
Open jwbook.org/similarity-check, attach the file and choose the page band. You will get an acknowledgement with a reference number.
3. iThenticate runs the comparison
The document is compared against internet sources, published journal content from Crossref and the major publishers, and previously submitted work. If you asked for it, AI writing detection runs on the same file.
4. Read the report, not just the number
The PDF gives an overall similarity index and a source-by-source breakdown. The breakdown is the part that matters — see the section below on why a single percentage decides nothing.
5. Revise and recheck
Rewrite the flagged passages in your own words, cite properly, then request a recheck to confirm the score before you submit to a journal or university.
What Plagiarism Actually Means in Academic Work
Plagiarism is presenting someone else’s words, ideas, data, figures or structure as though they were your own. It does not require intent. A missed citation, a paragraph pasted into a draft and never rewritten, a figure reused without permission — each is treated as plagiarism by a journal even when the author never meant to deceive anyone.
That is why a similarity check is a drafting tool, not a judgement. Running it before submission tells you what an editor is going to see, while you still have time to fix it. Running it after a rejection tells you why the rejection happened.
The Percentage Is Not the Answer
The similarity index is the share of your text that matches something else. It is a starting point, not a verdict. A 5% score can be plagiarism if it is one continuous copied paragraph. A 25% score can be perfectly acceptable if it is made of properly quoted material, standard method descriptions and the reference list. What an editor reads is the source-by-source breakdown, and so should you.
Use the bands below as orientation, then check the requirement of the specific journal or university you are submitting to — the threshold belongs to them, not to the software.
UGC Plagiarism Levels and Penalties (2018 Regulations)
The UGC (Promotion of Academic Integrity and Prevention of Plagiarism in Higher Educational Institutions) Regulations, 2018 grade similarity into four levels.
| Level | Similarity | Student work (thesis / dissertation) | Faculty & researchers (papers) |
|---|---|---|---|
| Level 0 | Up to 10% | Minor similarity — no penalty. | Minor similarity — no penalty. |
| Level 1 | Above 10% to 40% | Revised script to be submitted within a stipulated time, not more than six months. | Asked to withdraw the manuscript. |
| Level 2 | Above 40% to 60% | Debarred from submitting a revised script for one year. | Withdraw the manuscript, denied one annual increment, and not allowed to supervise new students for two years. |
| Level 3 | Above 60% | Registration for the programme cancelled. | Withdraw the manuscript, denied two successive annual increments, and not allowed to supervise new students for three years. |
The same regulations list what is excluded from the similarity calculation, so a fair check removes these before the percentage is read:
- Quoted work with permission and/or attribution
- References & bibliography
- Table of contents
- Preface & acknowledgements
- Generic terms & laws
- Standard symbols & equations
How to Reduce Similarity Honestly
The aim is a paper that is genuinely yours, not a lower number. Text spinners and synonym-swapping tools lower the score while making the writing worse, and reviewers notice unnatural phrasing immediately — several journals now treat it as a form of misconduct in itself.
- Read, close, then write. Take notes from a source, put it away, and write the passage from your notes. What comes out will be your sentence structure rather than a rearrangement of theirs.
- Quote deliberately. If the original wording matters, quote it properly and cite it. A correctly marked quotation is not misconduct, even though it raises the percentage.
- Cite while you draft, not afterwards. Most accidental plagiarism is a citation that was meant to be added later and never was.
- Do not fight the method section. Standard procedures and instrument names legitimately match other papers. Describe your own parameters and let the overlap stand.
- Cite yourself. Reusing your own earlier text is still reuse. Cite the earlier work as you would anyone else’s.
- Recheck after revising. Confirm the change worked before you submit, rather than hoping.
Can You Check Plagiarism with Google?
Google has no standalone public plagiarism checker, but four Google tools help — and each has a limit worth knowing before you rely on it.
Google Search “exact phrase”
Put a sentence in quotation marks — “like this” — and Google returns pages with that exact wording. Good for checking one passage you are unsure about.
Google Classroom originality reports
For institutions on Google Workspace for Education. Teachers and students run originality reports on assignments, which flag text matching web pages.
Google Docs add-ons
The Google Workspace Marketplace lists third-party checker add-ons that run inside Docs. They are separate services with their own pricing and privacy terms.
Google Scholar
Not a checker, but the best way to find the original source of a flagged sentence and cite it correctly — and to confirm your idea has not already been published.
10 Best Free Plagiarism Checkers (and What They Miss)
Useful for a first pass on a draft. Most compare against the open web only, with a word limit per search.
Google Search (exact-phrase check)
FreeCopy a distinctive sentence, wrap it in quotation marks and search. Any page carrying the same wording shows up. The quickest manual check there is.
Google Classroom Originality Reports
FreeBuilt into Google Classroom for schools and colleges on Google Workspace for Education. Compares student work with web pages and flags passages missing a citation.
ShodhShuddhi – DrillBit (INFLIBNET)
FreeINFLIBNET’s plagiarism-prevention programme supplies DrillBit to member Indian universities, so faculty and research scholars use it at no personal cost through their library.
Grammarly Plagiarism Checker
Free + paid planThe free check tells you whether a passage may match text elsewhere. The matched sources and full detail sit in the paid plan, along with grammar and clarity suggestions.
Quetext
Free + paid planUses contextual “DeepSearch” matching and colour-graded highlighting that separates exact matches from near matches. A free tier covers short texts.
Duplichecker
FreePaste text or upload a Word, PDF or text file and get a percentage of unique and matched content with links to matching web pages.
SmallSEOTools Plagiarism Checker
FreeA widely used free web checker that splits text into sentences and searches each one, then reports unique versus plagiarised percentages.
Prepostseo Plagiarism Checker
Free + paid planFree online checker with file upload, multiple language support and an AI-content detector alongside it; paid plans raise the limits.
Plagiarism Detector
FreeSimple free tool: paste text or upload a document and see sentence-level matches against web pages.
Search Engine Reports Plagiarism Checker
FreeFree web checker that compares text against search-engine results and highlights matched sentences with their source URLs.
10 Best Paid Plagiarism Checkers for Research & Academic Work
What journals, universities and publishers actually use — with full source reports, larger databases and, in many, AI writing detection.
iThenticate (by Turnitin)
PaidThe professional tool journals and publishers use. Compares manuscripts against web pages and the scholarly content of Crossref Similarity Check members, and does not store your file in a student repository.
Turnitin Feedback Studio / Originality
PaidThe university standard for coursework and theses, with a large repository of student papers, LMS integration and AI writing detection where enabled.
DrillBit Extreme
PaidIndian-developed plagiarism software, supplied to member universities through ShodhShuddhi since October 2023 and widely used for theses and dissertations.
Copyleaks
PaidAI-based plagiarism and AI-content detection across many languages, with paraphrase detection, LMS integrations and an API for platforms.
Grammarly (paid plan)
PaidThe paid plan adds full plagiarism detail — matched sources and citation help — on top of advanced writing suggestions.
Scribbr Plagiarism Checker
PaidA student-focused checker built in partnership with Turnitin, so it draws on a large scholarly database; priced per document.
Enago Plagiarism Check
PaidSimilarity reports for researchers from an academic editing and publication-support company, ordered per document.
Quetext Pro
PaidThe paid version of Quetext: longer documents, deeper search, a citation assistant and downloadable PDF reports.
Originality.ai
PaidCombines AI-content detection with plagiarism checking, built mainly for web publishers and content teams checking many articles.
PlagiarismCheck.org
PaidPlagiarism checker with a built-in AI detector, aimed at teachers, institutions and individual writers, with LMS plug-ins.
Need the report a journal expects, without a licence? Request a single iThenticate by Turnitin report at jwbook.org/similarity-check — from ₹500 for 25 pages, AI writing detection on request.
Free Checker, Google, Turnitin or iThenticate?
| What you get | Free web checkers | Google Search | Turnitin (student) | iThenticate (this service) |
|---|---|---|---|---|
| Compares with open web pages | ||||
| Compares with subscription journal content | Partial | |||
| Source-by-source PDF report | Basic | |||
| AI writing detection | Some tools | Where enabled | On request | |
| Accepted by journals & universities | Your university | |||
| Your file kept out of a student repository | Varies | |||
| Cost | Free, with limits | Free | Via your university | From ₹500 |
Plagiarism Checker Topics Covered on This Page
- Turnitin plagiarism checker online
- iThenticate plagiarism check India
- Free plagiarism checker
- Google plagiarism checker
- Plagiarism checker for research paper
- Plagiarism checker for thesis
- AI plagiarism checker
- UGC plagiarism rules
- Similarity index acceptable percentage
- Plagiarism check price per page
- DrillBit plagiarism software
- Best paid plagiarism checker
Plagiarism Check — Frequently Asked Questions
Is iThenticate the same as Turnitin?
They are two products from the same company. Turnitin is the student-facing service most universities use for coursework; iThenticate is the professional tool for researchers, journals and publishers. iThenticate searches subscription publisher content that the student version does not cover, which is why journals and editorial systems ask for it.
What similarity percentage is acceptable?
There is no universal number. Most UGC CARE Approved journals, including JMVRA, look for below 15%. Scopus standard and international journals commonly accept up to 20%. PhD theses are usually required to be below 10% excluding references. Always check the specific requirement of the journal or university you are submitting to — the threshold belongs to them, not to the software.
Does a low percentage mean my paper is safe?
No, and this is the most common misunderstanding. A 5% score made up of one continuous copied paragraph is plagiarism; a 25% score made entirely of correctly cited quotations, standard method descriptions and a reference list is usually fine. The source breakdown is what an editor reads, not the headline figure.
Will submitting my paper for a check put it in a database?
No. iThenticate does not add documents to the student repository the way a Turnitin class submission does, so checking a manuscript before publication does not cause it to be flagged as a match against itself later. This is one of the practical reasons researchers are told to use iThenticate rather than a student account.
Do you detect AI-generated content?
Yes, on request. Mention it in your request and AI writing detection flags content likely generated by ChatGPT, Gemini, Claude and similar models. Treat it as an indicator to review rather than a verdict — the detector reports a likelihood, and the responsibility for what is in the paper stays with the author.
How are pages counted for pricing?
By the page bands shown on this page, calculated on roughly 250 words per page. A 25,000-word paper falls in the 100-page band whatever its formatting, so changing margins or font size does not move it between bands.
Can I check the same paper more than once?
Yes. Rechecking after revision is the normal way to use the report — you fix the passages the breakdown flagged and confirm the score before submission.
Is a plagiarism check included if I publish with JMVRA?
Yes. Screening is part of the JMVRA publication process and included in the publication fee. This service is for authors who need an independent report for an external journal, a university submission, a thesis or a book manuscript.
What file formats can I send?
Word (.docx) and PDF are the reliable choices. LaTeX should be exported to PDF first. A scanned or photographed document cannot be checked, because there is no machine-readable text to compare.
How long does it take?
Standard turnaround is 1 to 2 working days. Large documents in the 5,000 and 10,000 page bands take longer; the acknowledgement email confirms the expected date.
Does Google have a plagiarism checker?
Not a standalone one for the public. Google Classroom offers originality reports to schools and colleges on Google Workspace for Education, and anyone can search an exact sentence in quotation marks on Google to find copies on the open web. Neither reaches subscription journal content, which is why journals and universities ask for a Turnitin or iThenticate report instead.
Is there a free Turnitin plagiarism checker?
Turnitin does not sell to individuals or offer a free public checker — it is licensed to institutions. Students get it through their university; authors who need an iThenticate by Turnitin report for a journal, thesis or book can request one here from ₹500 for 25 pages.
Which is the best free plagiarism checker for a research paper?
Free checkers such as Grammarly’s free check, Quetext, Duplichecker and SmallSEOTools compare text against the open web only, usually with a word limit per search. They are useful for a first pass on a draft. For a paper headed to a journal or a thesis headed to a university, use the tool the institution expects — normally iThenticate or Turnitin, or DrillBit through ShodhShuddhi at Indian universities.
Which plagiarism software do Indian universities use?
Many Indian universities use DrillBit, supplied free to member institutions by INFLIBNET’s ShodhShuddhi programme since October 2023, alongside Turnitin and iThenticate. Your library or research cell can tell you which tool and threshold your university applies.
Page reviewed 17 Oct 2026 · facts read from the journal record
Before you send a document for checking
Six checks that make the report cheaper to act on.
- The file is Word (.docx) or a text-based PDF — a scanned image has no text to compare
- References are left in; the report lets the reader exclude them
- Quotations are marked as quotations and carry a citation
- Your own earlier publications are cited where you reuse them
- The page count is known, so you can pick the right band (about 250 words a page)
- You have the journal’s or university’s own threshold to hand — the software does not decide it
Keep reading
Ready to Check Your Paper?
Send the document and the page band. The report comes back with a full source breakdown (and AI writing detection, if you ask for it), in time to fix what it finds before you submit.
Publishing with JMVRA? Plagiarism screening is already part of the publication process and included in your fee — you do not need to buy a separate report. This service is for authors who need an independent similarity report for an external journal, a university thesis submission, a book manuscript or a conference paper.
