Online Plagiarism Checker

№1 in United States
We help education establishments deal with academic integrity,
students to learn how to write original papers before they submit them to Turnitin.
every thing you write
...finishing you're next
made sure

Our Features


Create your own library

Upload your files and check new files against them for FREE


We check the entire Web

Yes, we do LIVE search against the whole internet


AI - powered engine

We detect synonyms, Character Replacement and Paraphrased plagiarism


Proofreading tools

Grammar & Spell checker, Online editor, Citation Assistance, Human Proofreading.

5+ Billion
Web Pages
100+ Million
Open Source and Private Repositories
20+ Millions
Noplag Database
Academic Papers, Articles, Journals
Library of files

Check for similarity in billions

Research Paper
Web - Online Content
Personal Statement
Admission Essay
Application Essay
Annotated Bibliography
Argumentative Essay
Book Report
Book Review
movie Review
Case Study
Scientific Paper
Term Paper
Academic Paper
Product Description
Guest Post
Lab Report
Research Paper
Research Proposal
Scholarship Essay
Thesis Proposal
Press Release
Website Content
Processed files today

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every thing you write
...finishing you're next
made sure

Noplag is one of the oldest, well-known and most trusted plagiarism detection services on the internet, which was established in 2014. Since then college students around the world, graduate and undergraduate students rely on Noplag Online Plagiarism Checker every day.

Plagiarism checker in students’ life is a necessity nowadays, as it not only helps students prepare for the module, exam or complete homework writing assignment but also educate students, how to write custom papers, motivates students to keep up with the Academic Integrity and not cheating by copying classmates essay or research paper but actually trying to write an original essay themselves.

Modern technology is evolving faster than we can imagine. Noplag free online plagiarism checker evolved from a simple online tool to a fully-featured writing assistance app and education resource for students and researchers. It’s no longer only about making your paper just original, you need a set of tools that can help you make your essay stand out, with proper argumentative or other topics for your Research Paper, Essay, Dissertation or Term paper. Online writing tools that can proofread your paper as you draft it online. To make sure you use the proper styles and reference all your studies and resources used for completing the writing assignment. It becomes almost impossible to cheat modern plagiarism checkers such as Turnitin and Noplag, and Noplag Plagiarism Checker’s goal is not to help students cheat the system, but help students learn how to write an original essay.

What a modern Plagiarism Checker should be capable of and How it Works

Check for plagiarism and similarities in multiple databases

There are many online plagiarism checkers that claim to check your essay against billions of sources, when in fact all they check against is the Internet and they usually don't even check the full paper. Please beware when you use other online plagiarism checkers. As many of them provide not trustworthy results.

Turnitin and Noplag are one of the oldest and trustworthy plagiarism detection services who accumulated billions of documents from other students and thus able to provide the most accurate plagiarism detection results.

Noplag checks your essay or paper against the following databases:

  • Academic Databases contain more than 2 Billions of essays, research papers, dissertations, thesis, bibliographies, topics, etc.
  • Noplag checks against multiple Publication databases that contain more than 800 million works. A combination of private and public repositories eliminates possibilities that our system can miss something that was already submitted.
  • Noplag Database is a huge collection of different academic papers, articles, and journals which are not available in public or private repositories. Currently, the Noplag database contains more than 50M files and its growing rapidly every minute.
  • Internet Noplag has a unique algorithm capable of checking the entire web (5Bllion+ Pages) within just a few minutes. Most of the other services are using cached data when Noplag does live search against the whole Internet!
Proofreading tools

Grammar, Spell Checker and Writing Style guides have become another essential when writing your paper, essay or dissertation. Noplag Online Editor with Proofreading tools gives you super writing powers and saves a great deal of time, as you can fix the paper as you write it. Noplag Writing Tips and Guides is another great way to stay focused on your paper and know exactly what to write about next, as we provide you with Online Essay Templates that serve as a home tutor.

Citation Assistance

Another vital feature for every student is the Citation Guides, Assistance and Checker. You don't want to fail the assignment, just because your paper wasn't properly referenced. Noplag Citation Assitance comes along with a Plagiarism checker to save your paper from failing.

Education Resources, Libraries

Noplag Library contains millions of examples that we happily share with students to help them get an idea and inspiration for their writing assignment, essay, paper. Hundred of thousand topics, essay samples will be a good jumpstart for students. To be the best, you have to learn from the best. Well, Noplag shared only A+ grades Essays and Topics to make sure you have the best examples for your custom paper.

Plagiarism Detection Technology

Technology is what makes product Plagiarism checker different from other, fake plagiarism checkers. Noplag dedicated a great deal of time and resources to train artificial intelligence to detect the slightest possibility of cheating. That way you can make sure that your paper is 100% plagiarism free and can be safely submitted for review. Paraphrasing, Letter Replacement, Patchwork plagiarism, Synonyms and other popular methods that you usually used to cheat plagiarism checkers are becoming almost impossible with modern top-notch plagiarism detection services like Noplag.

As you can see plagiarism checker and detector is not the only tool that students need before they can submit their paper to the instructor or Turnitin. The process involves researching, studying, referencing, proofreading and checking for plagiarism multiple times. That would not be possible if students were to use only Turnitin. Noplag is a great Turnitin alternative used both by students, educators, and educational establishments. Noplag and Turnitin are using different internal databases which make it possible for students to check essays for plagiarism with Noplag multiple times before they submit it to the instructor, SafeAssign or Turnitin.

Noplag definitely deserves to be called one of the most respective, trusted and widely used plagiarism checker among students all over the world.

Whether you are a student overwhelmed with lots of academic writing, or a teacher overwhelmed with even greater amounts of writing to check, you certainly have to deal with plagiarism. You know it may be hard to find a plagiarism checker that is efficient, works fast and provides easy-to-understand results. Sometimes, one may feel like shouting, “A good plagiarism checker! My kingdom for a good plagiarism checker!” Contrary to the common assumption, a high quality plagiarism checker doesn’t have to cost you an arm and a leg – or your entire kingdom – but using a poor quality one really might. Accidentally lost or mismatched sources of research material, lacking or improper citations and attributions, and/or poor paraphrasing may cause you lots of trouble, but an efficient plagiarism detector that uses the latest multi-way scanning algorithms can alert you to these problems.

Accurate checks at a reasonable price – is this possible? It is, if you aim at creating a product that meets the needs of a variety of users, not just the ones with a considerable budget and lots of documents to scan for plagiarism on a regular basis. That's why an innovative Noplag online service was created with maximum effectiveness in mind, based on advanced algorithms of checking your texts against the Internet, public repositories and Noplag extensive database of academic papers. It is very fast, as compared to other plagiarism scanners, and provides a detailed plagiarism report that you can send and share. So don't let plagiarism issues slow you down any more, deal with them in the fastest and most effective way that modern technology provides!

Noplag offers:

  • Plagiarism checker for universities/colleges/schools;
  • Plagiarism checker for students/teachers/academics;
  • Plagiarism checker for freelance writers, website owners, bloggers/journalists;

and anyone else wishing to find out if their written work contains plagiarism.

Everything that has once been problematic about plagiarism or its detection can be easily avoided today. Many people continue to carelessly think that plagiarism may be a problem, but it's not THEIR problem. We can agree, but this definition is missing one main component: a high quality plagiarism checker. If you are using a reliable, efficient and accurate service such as Noplag to check for plagiarism, and it provides fast, detailed, easy-to-interpret results, you can rest assured that plagiarism is not your problem.