Check your paper against 70 billion+ sources before your examiner does. Powered by PlagAware — the same software trusted by universities across Europe.
Academic institutions classify plagiarism as academic misconduct. Running an anti-plagiarism check before submission is the most reliable way to avoid consequences that range from grade penalties to permanent expulsion — and can follow you into your career.
Accidental Plagiarism Is Real
Many students plagiarise without knowing it. Forgetting a citation, paraphrasing too closely, or reusing a previous assignment can all trigger a plagiarism finding. A check reveals these issues before your examiner does.
Universities Use the Same Tools
Most universities now run every submitted paper through plagiarism detection software. If you don't check your own work first, you're submitting blind — and hoping for the best.
AI Detection Is Also Required
Since 2023, many institutions also screen for AI-generated content. Our combo check covers both plagiarism and AI detection in a single report, so you're fully prepared.
The most effective anti-plagiarism approach isn't reactive — it's proactive. Rather than hoping your paper passes the institutional check, you run your own check first and address any issues on your terms.
Here's how that looks in practice:
This three-stage process is especially important for longer academic works like theses and dissertations, where the volume of content makes accidental matches more likely.
Start Your Check NowThree simple steps. No account needed. Professional results in under 15 minutes.
Upload Your Document
Submit your paper in PDF, Word, or plain text format. We accept documents in all major academic languages including English, German, French, and Spanish.
PlagAware Scans 70 Billion+ Sources
Your document is processed by PlagAware — the same software used by universities across Europe. The scan covers academic journals, websites, books, and student paper databases.
Receive Your Report by Email
Within 15 minutes you receive a detailed PDF report. It shows your overall similarity score, every flagged passage, and links back to the original matching sources.
A professional report you can use to improve your paper — not just a pass/fail number.
Overall Similarity Score
The percentage of your text that matches existing sources. Shown prominently at the top of the report so you can compare it against your institution's threshold.
Highlighted Matches
Every flagged passage is colour-coded directly in the body of your document. You see exactly which sentences or paragraphs triggered a match.
Source Links
Each match is linked to its original source. You can click through, verify whether it's a legitimate citation or an oversight, and decide how to act.
Source Breakdown
A full list of all matched sources ranked by the proportion of your text they account for. Useful for identifying your largest problem areas at a glance.
AI Detection Score (Combo)
With the combo check, your report also includes an AI-generation probability score and highlights passages that show statistical patterns consistent with ChatGPT or similar tools.
GDPR-Compliant Processing
Your document is processed on servers in Germany. It is not stored in any student paper database and will not be used to train algorithms. Full data protection guaranteed.
Most universities publish acceptable similarity rates. Here are the widely-observed guidelines:
| Document Type | Acceptable Similarity | Borderline | Problematic |
|---|---|---|---|
| Essay (undergraduate) | Under 10% | 10–20% | Over 20% |
| Bachelor's Thesis | Under 5–10% | 10–15% | Over 15% |
| Master's Thesis | Under 5% | 5–10% | Over 10% |
| PhD Dissertation | Under 3–5% | 5–8% | Over 8% |
| Journal Article | Under 5% | 5–10% | Over 10% |
These are general guidelines. Always confirm the exact threshold with your institution. Properly cited and formatted quotations are often excluded from the similarity count.
University-Trusted Technology
Powered by PlagAware — used by universities including Freiburg, Leipzig, Potsdam, and more. When you use our service, you're checking with the same software your examiners rely on.
70 Billion+ Sources
Our database covers academic journals, online publications, books, websites, and student paper repositories across multiple languages. No significant source goes unchecked.
Results in 15 Minutes
Even on deadline, you have time to check. Submit your document and receive your full PDF report in your inbox in under 15 minutes — no waiting, no queues.
Transparent Pricing from $0.29
Pay only for what you need. No subscription, no hidden fees, no minimum pages beyond the $0.90 minimum order. Check one page or one hundred — your choice.
Your Document Stays Private
We never add your document to a student paper database. Your work remains yours. Processing on German servers ensures full GDPR compliance.
Direct Email Delivery
No login portal to navigate. Your report arrives directly in your inbox as a downloadable PDF. Simple, private, and ready to reference alongside your submission.
The same anti-plagiarism technology — available to every student.
Choose the check that suits your needs. Save 33% with the combo check.
Minimum order: $0.90. Use code plagiarism-scan10 for 10% off your first check.
An anti-plagiarism check compares your academic paper against billions of online and scientific sources before you submit it. It identifies any passages that match existing texts — whether copied directly, paraphrased, or accidentally similar — so you can correct them and submit with confidence.
Anti-plagiarism software breaks your text into segments and compares each segment against a large database of academic papers, websites, books, and journals. Matching passages are flagged with a similarity score and linked back to the original source. PlagAware, our detection engine, uses advanced string-matching and fingerprinting algorithms to find matches even when wording has been slightly altered.
Most universities consider under 10% similarity acceptable for essays, under 5–10% for bachelor's theses, and under 3–5% for master's and doctoral dissertations. Properly cited quotations should not count against your score — always check your institution's specific guidelines as thresholds vary significantly between departments and countries.
Yes. plagiarism-checker-online.net requires no registration. Simply upload your document, pay securely online, and receive your detailed PDF report by email within 15 minutes. Your data is processed on servers in Germany under strict GDPR compliance. We never retain your document after the check is completed.
Plagiarism checking compares your text against existing sources to find copied or paraphrased content. AI detection analyses writing patterns to determine whether a text was likely generated by tools such as ChatGPT or Copilot. These are different analytical processes — and universities are increasingly applying both. Our combo check ($0.39/page) covers both simultaneously in a single unified report.
Thesis Check
Dedicated anti-plagiarism guidance for bachelor's and master's theses — including cost estimates by page count.
Dissertation Check
PhD and doctoral dissertation checks with multilingual source coverage and self-plagiarism detection.
Plagiarism Percentage
Full guide to acceptable similarity rates by institution type, document type, and academic discipline.
Protect your academic integrity before it's too late. Upload your document and receive your report in 15 minutes — no account, no subscription.
Use code plagiarism-scan10 for 10% off. Minimum order: $0.90.