Free Plagiarism Checker by Quetext

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Quetext’s plagiarism checker detects plagiarism in your text,
checks for other writing issues, and helps you build citations
Check 500 words for FREE!

Why Use a Plagiarism Checker?

Plagiarism can happen without intention, but the consequences are always serious. Whether you're working on a university paper, publishing an article, or delivering content to a client, originality matters. A reliable plagiarism checker protects your work, your reputation, and your voice. With Quetext, you get advanced plagiarism detection powered by DeepSearch , along with helpful tools like citation assistance, paraphrasing tool and AI detection.

Assignment

Academic submissions

Avoid unintentional plagiarism and protect your academic integrity.

Publishing

Published articles

Ensure your work is 100% original before it reaches your readers.

Papers

Essays, research papers

Back up your arguments without crossing citation boundaries.

Online Plagiarism Checker: How It Works

Enter text into plagiarism detector

Our plagiarism detection tool, featuring DeepSearch™ Technology, provides a simple and effective method for checking plagiarism. Just copy and paste your content into the tool, then click the 'Check Plagiarism' button.

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Check for plagiarism

Quetext’s online tool identifies any potentially plagiarized content throughout your document by running the text through three steps:

  • 1. Contextual Analysis
  • 2. Fuzzy Matching
  • 3. Conditional Scoring

Check for plagiarism

Quetext’s online tool identifies any potentially plagiarized content throughout your document by running the text through three steps:

  • 1. Contextual Analysis
  • 2. Fuzzy Matching
  • 3. Conditional Scoring
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Evaluate plagiarism report

After evaluating the text against billions of internet sources, our plagiarism software will share your plagiarism results, including a score showing the percentage of text that is an exact or near-match to existing text online. (The higher the score, the more plagiarism found in your content!)

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Resolve plagiarism risk and add citations

Our ColorGrade™ feature color-codes exact and near matches, letting you address plagiarism by modifying or citing the source. The "Cite Source" tool generates citations in MLA, APA, and Chicago formats for direct insertion into your document.

Resolve plagiarism risk and add citations

Our ColorGrade™ feature color-codes exact and near matches, letting you address plagiarism by modifying or citing the source. The "Cite Source" tool generates citations in MLA, APA, and Chicago formats for direct insertion into your document.

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Key Features of Quetext Plagiarism Checker

Citation

Citation
Generator

DeepSearch™

DeepSearch™
Technology

Assignment

ColorGrade™
Feedback

AI Detection

AI Detection
Capabilities

AITutorMe

AITutorMe

( Paraphrasing Tool)

Citation Generator

Citing your sources properly can be tricky and time-consuming. With Quetext, you can instantly generate citations in popular formats like APA, MLA, and Chicago. That takes a huge load off your plate especially during midterms or finals when time is tight.
Bonus: this feature also helps you avoid unintentional plagiarism caused by missing or improperly formatted citations.

DeepSearch™ Technology

Not all plagiarism is obvious, and not all tools catch it. Quetext’s DeepSearch™ goes beyond surface-level checks. It analyzes your writing against a vast database of academic papers, online content, and published works to catch not only exact matches but also near-identical phrasing, paraphrased content, and improperly cited material.

That means you’re not just catching copy-paste mistakes. You’re finding the hard-to-spot stuff too before your teacher or boss does.

ColorGrade™ Feedback

Let’s face it some plagiarism reports are just walls of confusing text. Quetext takes a different approach. Its intuitive color-grading system clearly highlights:
a. Direct matches
b. Partial matches
c. Missed citations

That visual clarity makes it easy to see where you went wrong and what needs fixing especially helpful for students and ESL writers still mastering citation rules.

AI Detection

With the rise of generative AI tools, distinguishing between human-written and AI-generated content is more important than ever. Quetext’s AI Detection helps you maintain transparency and credibility by identifying content that may have been generated by AI models. Whether you're reviewing student work, writing professionally, or just want to ensure your voice comes through, our detection tool offers clarity and peace of mind without judgment.

AITutorMe

Need help rephrasing content to make it more original? AITutorMe is your built-in writing coach. It doesn’t just swap words; it helps you rewrite sentences while preserving your intended meaning and improving clarity. Whether you're refining a rough draft or reworking flagged content, AITutorMe makes the revision process faster, easier, and more thoughtful, so your writing always sounds like you, just better.

Benefits of Doing a Plagiarism Check

Whether producing original content or verifying that of others, there’s a lot to gain from using a plagiarism checker. An accurate, user-friendly plagiarism scanner provides real-time, automatic detection of duplicate content, facilitating the copy-checking process for teachers, students, content writers, and more. Results showing the exact percentage of plagiarized content allow users to see exactly how much text has been copied and where they need to re-word, thus helping to avoid unintentional plagiarism.

teacher

For Teachers

Our tool ensures academic integrity by verifying students’ work for originality, aiding educators in grading. From K-12 to higher education, it automates plagiarism checks, freeing teachers to prioritize work quality over originality scrutiny in academic and research papers.

Plagiarism Checker for Teachers
student

For Students

The prevalence of academic plagiarism is increasing, often unintentionally. A reliable online plagiarism checker offers students peace of mind when submitting academic papers. It's easier to check for potential plagiarism before submission than to defend your writing later. Quetext ensures accurate results and helps students cite sources with its built-in citation generator.

Plagiarism Checker for Students
copywriter

For Copywriters

Plagiarism risk extends beyond academia to business and individual writing. Copied content is a concern for content writers tasked with creating original content on diverse topics. Our plagiarism checker swiftly prevents copyright infringement, ensuring bloggers and writers maintain integrity. Checking lengthy pieces takes minutes, safeguarding companies’ public content and writers’ reputations.

Plagiarism Checker for Copywriters
Institutions

For Institutions

Quetext helps schools, colleges, and universities uphold academic standards by providing a scalable, easy-to-use plagiarism detection solution for administrators, faculty, and staff. Whether used to evaluate assignments, theses, or research submissions, our tool ensures content originality across departments.

Plagiarism Checker for Institutions

Why Avoiding Plagiarism Matters?

At its core, plagiarism isn't just about copying, it's about missing the chance to express your own voice. Whether you're a student, researcher, or professional, understanding the impact of plagiarism can help you take ownership of your work and grow as a writer.


That’s where Quetext comes in. Our plagiarism checker is more than just a detection tool; it’s a writing assistant designed to help you identify unoriginal content and make it better.

Ethical Considerations

Originality reflects integrity. In both academic and professional environments, producing your own work builds credibility and trust. When you unintentionally reuse someone else's words, it can raise questions about honesty even when your intent wasn’t to deceive.

Quetext helps you stay aligned with your values by highlighting borrowed content and offering tools to rephrase and refine, so your work stays true to you.

Academic Implications

Educational institutions take originality seriously. Most have clear guidelines around plagiarism, and even unintentional issues can lead to tough consequences like grade penalties or academic review.

Using Quetext early in your writing process gives you the confidence that your submission meets expectations. Our DeepSearch:tm: technology helps ensure your writing reflects your own understanding while flagging any sections that may need a second look.

Legal Concerns

In the professional world, copying content, especially protected work can lead to copyright disputes. For businesses, creators, or marketers, even accidental duplication can impact credibility and trust.

Quetext helps safeguard your work before it’s published. By spotting potential issues and helping you rewrite them in your own words, our tool helps protect both your voice and your reputation.

Common Types of Plagiarism

Direct Plagiarism

Direct
Plagiarism

Self Plagiarism

Self
Plagiarism

Mosaic Plagiarism

Mosaic
Plagiarism

Paraphrasing Without Citing 

Paraphrasing
Without Citing 

Accidental plagiarism

Accidental
Plagiarism 

Common Types of Plagiarism

Direct Plagiarism

This is when you copy someone else’s words exactly as they are no quotation marks, no citation, nothing. It’s the most blatant kind and often the easiest to catch with a plagiarism checker.

Self-Plagiarism

Yes, you can plagiarize yourself. If you’ve submitted a paper before and reuse all or part of it for a new assignment without saying so, that counts as plagiarism. Professors want fresh work every time.

Mosaic Plagiarism (Also Called Patchwriting)

This one’s a bit sneaky. It’s when you borrow phrases from a source and mix them into your own writing without quotation marks or proper credit. Even if you swap out a few words, if the structure or idea isn’t yours, it still counts.

Paraphrasing Without Citing

Rewording something from a source isn’t enough you still have to cite it. Just because it’s not a copy-paste job doesn’t mean it’s original.

Accidental Plagiarism

Even if you didn’t mean to do it, forgetting to cite a source or misunderstanding the rules can still land you in hot water. That’s why tools like Quetext are so helpful they act as a safety net.

Chrome Extension

Quetext’s Online Tool Has It All:

  • AI detector
  • Expanded citation generator
  • Individual or team plans
  • Bulk file uploads
  • Spelling & grammar checker
  • 100,000 total words/month per user
  • Downloadable originality reports
  • Source exclusion
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What is AI Plagiarism Detection?

As AI tools advance, creating content that mimics original work can now constitute plagiarism. This underscores the necessity for AI-driven detection tools.
Our AI content detector uses sophisticated algorithms to scan and compare vast databases, ensuring accurate identification of plagiarized content. Employing an AI plagiarism checker like these is crucial to maintain integrity in academic and professional spheres, safeguarding against unintentional or deliberate plagiarism.

TRY OUR AI DETECTOR
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What is AITutorMe (Paraphrasing tool)

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Quetext’s AITutorMe is an advanced paraphrasing tool that helps users rewrite content with clarity and originality. It provides three high-quality reworded options for each sentence, allowing users to choose the best fit or customize further. Ideal for students, educators, and professionals, AITutorMe makes it easy to avoid plagiarism while improving writing quality.

TRY FOR FREE

Why Choose Quetext’s AI Plagiarism Checker?

Quetext doesn’t just catch plagiarism. It helps you grow as a writer. Whether you’re trying to improve your academic integrity, fine-tune your citations, or just double-check your draft, it’s a smart tool built for today’s writers.

Real-Time Results That Keep You Moving

When deadlines are looming, you don’t have time to wait around. Quetext provides fast, real-time plagiarism checks without making you refresh the page or dig through multiple menus. You paste your content, hit scan, and the results appear in seconds. It’s that seamless.

Whether you’re checking a few paragraphs or an entire research paper, you’ll get your insights quickly so you can get back to writing (or revising) ASAP.

A Distraction-Free, User-Friendly Interface

No clutter. No pop-ups. No ads getting in your way. Quetext is designed for focus. Its sleek layout and smooth navigation make it ideal for writers who just want to check their work and move on not get lost in a maze of confusing buttons and upgrades. That means less time learning the tool and more time improving your content.

Built for Everyone from Freshmen to Professionals

Quetext isn’t just for students. It’s used by:
1. Educators checking student submissions
2. Researchers cross-checking citations
3. Content creators verifying originality
4. Freelance writers and bloggers protecting their work
5. Businesses ensuring compliance in published materials

Whether you’re writing your first term paper or publishing your tenth article, Quetext adapts to your needs with both free and Pro versions.

A Pro Plan That Offers Serious Value

Need more features? Quetext Pro unlocks:
1. Increased word count for larger documents
2. Plagiarism scoring and detailed reports
3. Downloadable PDFs for academic or workplace documentation
4. Advanced citation assistance
5. Priority access and support

If you’re writing regularly especially at the college or professional level the Pro plan gives you the depth and reliability you need.

Plagiarism Checker FAQ

What is plagiarism?

Plagiarism is the act of representing someone else’s work as your own. In educational contexts, definitions vary by institution. It includes direct copying, improper paraphrasing, and self-plagiarism, where one reuses their own work without citation. Plagiarism violates academic integrity and journalistic ethics.
In academic writing, producing original work and appropriately crediting sources prevents plagiarized content. Accidental plagiarism occurs when sources are unintentionally cited incorrectly, underscoring the importance of understanding citation practices. Maintaining originality and avoiding plagiarism not only uphold academic integrity but also contribute to creating original content that advances knowledge and scholarship.

What percentage of a paper can be plagiarized (or copied) and still be considered unique?

Generally speaking, similar or exact copies of another source should be kept under 15% for the total text of the article/paper/essay. As a best practice, citations should be used whenever using another original source word-for-word.

What’s the difference between deliberate and accidental plagiarism?

Deliberate plagiarism is purposely copying works from books, articles, webpages, or someone else’s paper and representing it as your original work. Alternatively, accidental plagiarism occurs in a few different ways:

  • Incorrectly citing another person’s works
  • Failing to paraphrase another person’s works - even when citing it correctly
  • Reusing your own previous papers and inadvertently representing it as a new idea

A plagiarism checker works by comparing the submitted copy against known existing content. This sort of similarity checker flags instances of duplicate content, allowing the writer to modify those areas to avoid any claims of plagiarism.

What are the consequences of plagiarism?

The consequences of plagiarizing another person’s work vary by profession. For Students: Maintaining academic integrity is crucial. Students must ensure their work is not plagiarized. Consequences include failing grades, removal from classes, or expulsion. Even if allowed to stay, students may face mistrust and scrutiny. For Copywriters: Copywriters must produce original content. Plagiarized content can damage their reputation and make it hard to get assignments. Ensuring 100% originality is their responsibility. For Journalists: Journalists must uphold high standards of integrity. Plagiarized content erodes trust with readers and publishers, potentially ending careers. They must produce original, well-cited content.

Why is plagiarism bad?

There are several reasons why plagiarism is wrong, all centering around violating academic integrity, undermining originality, and eroding trust. It leads to legal consequences, tarnishes reputations, and stunts personal growth. Avoiding plagiarism preserves credibility, fosters creativity, and upholds ethical standards. Educational institutions and search engines penalize plagiarized content, impacting SEO rankings and visibility. Embracing originality ensures sustainable success and fosters a trustworthy reputation online.

Can AI-generated content be considered plagiarism-free?

AI-generated content, such as text produced by language models like GPT-3, GPT-4, and Gemini, can be considered plagiarism-free if properly used and cited. However, using AI writing tools like ChatGPT without adequate citation can lead to unintentional plagiarism. It's vital to use an AI content detector to ensure originality. High-quality tools that use advanced detection models, like Quetext’s AI Detector,can help identify AI-generated text, minimizing the risk of false positives and ensuring that submissions are plagiarism-free.

How does AI technology impact plagiarism detection?

AI-generated content and AI-generated text are now common, making AI content detection crucial. Detecting AI technology, including advanced algorithms and language models like ChatGPT-3 and GPT-4, has significantly improved plagiarism detection. Tools like Quetext’s AI detector tool utilize these advanced models to compare submitted text against vast databases, ensuring accurate detection of potential plagiarism and copy written by artificial intelligence or generative ai.

Can I check for plagiarism manually?

When it comes to catching plagiarism especially in academic or professional writing many people still rely on manual methods. That means reading through source material, cross-referencing citations, and scanning for unoriginal phrases one line at a time. While that approach may feel thorough, it’s not always practical. Or efficient. Or accurate.

It takes a lot of time. Reviewing multiple sources and line-by-line comparisons can take hours especially for long documents like essays, theses, or reports. Human error is inevitable. Even experienced editors or teachers can miss subtle paraphrasing, improper citations, or near-matching phrases. You simply can’t remember or Google everything.

Source coverage is limited. You might check a few popular sources or journals, but you won’t have access to billions of documents across the web, academic databases, and publications. It doesn’t teach you much. Manual checking tells you what’s wrong if you’re lucky, but it doesn’t always explain why it’s wrong or how to fix it.

How does Quetext’s AI Plagiarism Checker help?

Quetext’s plagiarism checker flips the script by giving you real-time results powered by DeepSearch™ technology scanning your content against vast online databases and providing clear, actionable feedback in seconds.

Here’s what makes it more effective than going it alone:

  • Instant Feedback: What takes hours to spot manually, Quetext catches in a few seconds including close matches and subtle paraphrasing.
  • Greater Accuracy: It uses advanced algorithms to detect not just direct copying but also mosaic plagiarism and improperly cited ideas things that are often missed by the human eye.
  • Massive Source Database: You don’t need to dig through books or open a dozen browser tabs. Quetext checks against billions of pages, including academic articles, journals, web content, and more.
  • Teachable Moments : With Quetext, you’re not just told what’s wrong you’re shown how to improve. Color-coded feedback and citation support turn each scan into a learning opportunity
  • Data Privacy: Unlike manually pasting your content into random websites, Quetext protects your text. It’s not stored or shared without your permission.

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