14 Free Plagiarism Checker Tools To Identify Duplicacy

Plagiarism checker follows a systematic process to track copied element within your content. It is essential if you are going for academic assignment where a unique material is required to submit. You should be aware of the serious consequences plagiarism brings. Some institutes are very strict about this matter – they won’t hesitate while suspending, or even worse, expelling you, if they find the material you submitted was copied.

For a journalist, writer and blogger to be found guilty of plagiarism is quite risky, since they can lose website ranking, earnings, and ruin their reputation and careers. To keep you away from getting into trouble, we have collected some of the best, free plagiarism checker tools. They will help you avoid getting takedown notices, and get a complete proofreading at the same time.

14. Plagiarism Checker

The online tool makes it simple for authors and teachers to check for copied work by pasting phrases from papers into a search box. The system can search through either Yahoo or Google.

Because this tool does not check against previous submissions, submitting your content will not cause it to get incorrectly flagged as plagiarized if you check it later.

13. SEO Tool Station

SEO Tool Station’s plagiarism checker carefully scans the whole article sentence by sentence and compares it to over billions of web pages so that you get more accurate results. If any copied line is found in the article, it shows the copied sentence in red.

The tools is faster than others. No need to sign up, fill a survey or register. Just paste the article, URL or upload the content in the docs or text format and hit Enter.

12. PaperRater

PaperRater offers 3 tools – Plagiarism detector, grammar checking and writing suggestions. It’s simple just copy and paste your content in the box and the tool will compare it against over 10 billion online pages. The free version accepts document having less than 6,000 words.

When you submit a content to PaperRater, the text is split up into smaller pieces, which are then compared against over 20 billion pages found in journals, research articles, books, and web pages indexed by popular search engine like Google, Bing and Yahoo. A low originality score shows that some portion of the submitted document has been copied from somewhere.

11. Plagium

Plagium offers two types of search service – quick and deep search. For an occasional check, simply paste your text window and click Quick Search. As long as you don’t have too many searches, the tool won’t charge you.
The Deep Search feature provides an extra level of plagiarism search with more display tools. You need to sign up to use this feature.

Plagium lets you scan 5,000 words at a time and you can choose to check against web or news. There is also an advanced option where you can select relevancy percentage.

10. Anti-Plagiarism

The Anti-Plagiarism software is probably the cheapest solution of copy-paste problem. It’s really helpful for professors to ensure the projects they are checking were not stolen, as well as for webmasters to control the uniqueness of the content.

The software scans your content against 10 billion webpages to help you find the specific sections that were copied from the internet. Full version of the tool is available for free download.

9. Dupli Checker

Dupli Checker is easy-to-use online tool that gives you three options to check plagiarism of your work – either copy paste the text (should not be more than 1000 words), enter the URL of a webpage, or upload a text file. Moreover, it gives you the option to check grammar of your content.

If you are using the site for first time, you can perform only 1 search per day. While registered users get 50 searches per day.

8. Search Engine Report

Search Engine Report is made with proper research on what the customers are looking for in a free plagiarism detection system. It is easy to use – just paste the content in the space provided or upload the file, and it will run your content through its database of millions of websites. The tool will run through every word and sentence to give you an accurate and reliable result.

The results will be highlighted in red and green color – green indicates your content for that specific part is unique, while, the red signal indicates that the content has already been published online, so you need to change that.

7. PlagScan

PlagScan checks your content against billions of online sources and over 20,000 scientific journals. Copied text, potential plagiarism and citations are directly highlighted in the content you have submitted. Sources are clearly displayed and accessible. You get the percentage of text found in other sources.

You can submit your content via computer, cloud or by copying and pasting it. The original formatting won’t be altered and your document won’t be shared with anyone.

6. Article Checker

The Article Checker is built on proprietary technology  which uses language processing algorithm and machine learning algorithms to check your content against billions of articles published online.

All you need to do is paste your content in the text box, and the tool will analyze your text based on phrase pattern, lexical frequencies and numerous other proprietary factors. Further, each text will be mapped into an internal network where it will be compared against the entire internet and other popular databases.

5. Grammarly

You get a free plagiarism tool included in your writing and editing subscription. However, it needs a premium account. The tool is highly recommended for teachers, students, bloggers and all people who look for a unique piece of content, and wants to protect themselves from serious consequences.

Unlike other tools, here you can get plagiarism as well as proofreading at the same time. It checks over 250 grammar points, sentence structure, punctuation, spelling, and scans your content against more than 8 billion web pages to find every single sentence that you need to modify. All within one click.

4. Viper Plagiarism Scanner

Viper requires software installation on your computer and registration. It checks your content against 10 billion sources, providing side-by-side comparison. The input content will be scanned against all essays, webpages, journals and other open sources published on the internet. When done, you will get a clear and concise highlighted report.

The software takes around 40 minutes to install and 10 minutes to create your personal account. It is compatible with Microsoft Windows only.

3. Small SEO Tool

Small SEO Tool has a free plagiarism checker to check the percentage of duplicate texts your content carries. The only disadvantage is it’s quite slow as compared to other tools. You can check 1000 words per single search, or divide your text into sections. The tool will compare every sentence to the web database with the help of Google SERP.

2. Quetext

Quetext is a completely free plagiarism detection service that uses machine learning algorithms and natural language processing to intelligently recognize likely instances of plagiarism within a document. It considers every possible factor of every word in the text, even synonyms, and evaluates a vast network of interrelated probabilities which gives a statistically significant set of results.

Read: 18 Best Content Curation Tools for Marketers and Bloggers

The online tool supports multiple languages. No sign up or download is needed, just copy paste the text and get the result.

1. Copyscape

Copyscape is a popular web-based service that scans the webpage and compares phrases with all Google indexed pages. The quality of their checking is really great. However, expect a few mistakes time to time because there is no perfect tool build yet that scans every new page on the internet.

Read: 18 Web Scraping Tools for Extracting Online Data

The free version is good for finding copies of your web pages online, while the premium one provides more powerful plagiarism detection, plus a couple of other features, including batch search, case tracking and private index.

Written by
Varun Kumar

I am a professional technology and business research analyst with more than a decade of experience in the field. My main areas of expertise include software technologies, business strategies, competitive analysis, and staying up-to-date with market trends.

I hold a Master's degree in computer science from GGSIPU University. If you'd like to learn more about my latest projects and insights, please don't hesitate to reach out to me via email at [email protected].

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