With the Siteliner feature, CopyScape will scan all articles on the website and produce results: duplicate rate, all URLs, ...

The test operation on this tool is not very complicated. You just need to enter the content of the document you want to check into the search box and wait for about 30 seconds. Then, the results table will display very detailed source export information. When you know which paragraphs and sentences are "plagiarized", you will save a lot of time and edit them easily.This is a "must-have" software for website SEO people.

Based on the search results, so that SEO is not affected, SEOer can remove unnecessary content from the website or business blog.

Copy Scape will even scan countless websites daily for duplicate content, emailing you whenever it finds a new copy. “10 duplicates” is what more this plagiarism checker can give you.Therefore, the situation of someone copying your content, republishing it on their site, stealing visitors and revenue, etc. is completely within your control.

Pros:

• Simple operation, easy to do
• The system responds quickly to the results.
• It provides banners and badges to add to your site to deter content theft.

Cons:

• WordPress integration is chargeable

Grammarly is known as a tool to check grammar and analyze text for readability, and it also offers a free plagiarism checker to compare your text or files with 16 billion websites and scholarly articles.

The free version generates an instant report that tells you how many problems your document has and whether plagiarism has been detected, but it doesn't tell you exactly where those errors are.

Grammarly also offers a premium plagiarism checker that goes much deeper by flagging sentences, providing source references, providing enhanced feedback, and assigning a unique score to documents. your.

Pros:

• Can look up content in bulk
• Provide plagiarism warnings when text matches information content online or in a database
• Plagiarism checker coverage on 8 billion different websites
• Provides spelling, grammar and vocabulary suggestions to reinforce expression
• Calculate percentage of exclusivity and percentage of duplicate of text
• Articles that need to be checked for plagiarism are kept private

Link: https://www.grammarly.com/

Small SEO Tool plagiarism checker software is completely free and you can use it indefinitely. It is also a popular tool for checking plagiarism.

Small SEO Tool allows users to know how much content is duplicated. And of course, these duplicated, plagiarized parts will be displayed in red for distinction. In addition, users can also know which article the sentence is in, by clicking on the plagiarism text shown below.

Although quite superior, Small SEO Tool has the sad disadvantage that you can only check for plagiarism for pieces of content under 1000 words. Therefore, if the lesson is long, you need to divide it into several times to do the test.

Pros:

• Free online plagiarism checker software.
• Easily check for duplicate content, even if it's just a few short words.
• The software has the function to display the source containing the duplicated words.
• User-friendly software interface, easy to use.
• Results show plagiarism quickly.

Cons:

• The online interface contains many ads.
• The test passage limit is 1000 words.

Link: https://smallseotools.com/plagiarism-checker/

Duplichecker is a software developed online for SEOers. Through internet resources, it is easy to tell you the correct plagiarism information.

Based on AI algorithm technology, Duplichecker is currently the most trusted by users. Its interface is also easy to see and the check operation is quite simple.

Feature:

• Scan up to 1000 words/time
• Copy and paste content directly into the search box
• Show copy results as a percentage
• Provides intelligent tools to help reinterpret content to correct plagiarism
• Easy to use interfaceShow copy results as a percentageShow copy results as a percentage

Pros:

• Check the paragraphs and show the percentage of duplicates.
• Support many file formats directly such as txt, doc, docx, tex, pdf, otd, ...
• Support free online tests up to 1000 words.
• You can check through the URL of the website you are using.
• Users can check both plagiarism and grammar in the content.

Cons:

• If you want to check more than 1000 words, you should upgrade the package. The user can then use Duplichecker's advanced search capabilities

Link: https://www.duplichecker.com/

Plagium is a plagiarism checker that is used by many people today. Through the built-in algorithm, Plagium ensures the originality of the article. Users can also copy and check their paragraphs with only a few seconds of results returned.

Feature:

• Free to use for a while.
• Get quick and accurate results.
• Quick check or deep check into text content.
• Provide Google Doc-linked utilities.

Pros:

• Shows the number of web pages with duplicates of your uploaded content.
• Display content duplicate percentage.
• Upgradable software with enhanced search capabilities.
• No installation required, can be used with an Internet connection.

Cons:

• Free mode does not have many search results.
• There is a search paragraph limit of 1000 words.

Link: http://www.plagium.com/

The main attraction of Plagiarism Checker is that it is completely free and has a simple interface.

It is compatible with Windows, Mac, Android, iOS, and Blackberry, it also allows you to upload directly from Dropbox.An added feature is the ability to exclude a URL if you want to test your site but don't want to include a specific page.

This wesite can handle a search of 1,000 words at a time, so if you have long content you will need to split it up to check.

Checks in percentages so Plagiarism Checker doesn't check too fast. In addition, users who check the whole paragraph should enter each sentence line for more accurate results. So it's quite inconvenient if people want to check long passages.

Pros:

• Allows checking by URL or removing some URLs.
• Support test up to 1000 words.
• Completely free to use.
• Check for plagiarism for percentage accuracy.
• Support many file formats such as: docx, pdf, text, .wps, pptx, ...

Cons:

• No file upload feature

Link: https://www.plagiarism-checker.me/

CopyLeaks AI-based algorithms are capable of analyzing text in over 100 languages.
Their website offers a lot of useful tools, including a text comparer, a code checker, a duplicate file finder, and a website comparer.

CopyLeaks even offers an automatic grading tool for teachers and the Copyshield program to protect your website from plagiarism.

The free version allows you to scan up to 20 times per month but has some limited features.If you are willing to pay a monthly subscription, you can get a lot of conveniences.

Pros:

• Provide comprehensive reporting system
• Provide exclusive automatic scoring tool
• Integration with MS Word, Google docs,...
• Article information security
• Compare the level of overlap between 2 articles
• Suitable for students who need to test copy documents based on available online information sources and database repositories

Cons:

• Copyleaks lets you scan no more than 2500 words per month for free.
• For more you need to subscribe to their paid version
  

Link: https://copyleaks.com/

Programmed by intelligent algorithms, Quetext is one of the best plagiarism checkers available today. For these, the tool helps identify duplicates in websites, news sources, online textbooks, citation generators. The application shows duplicate errors with corresponding colors to help users easily distinguish.

A prominent feature of Quetext is Deep Search, which helps content be compared with more article sources to give more accurate plagiarism results. However, this feature is not free for you to use, you need to pay a monthly fee to use it.If you don't want to pay the monthly fee, you can use the free version.

Pros:

• Provide a summary score for plagiarism
• A free plagiarism checker for teachers only
• Check plagiarism easily with one click
• It keeps documents private

Cons:

• The free version doesn’t include DeepSearch Technology
• $9.99/month when using advanced features

Link: https://www.quetext.com/plagiarism-checker

Unicheck is a tool with the most accurate and complete information to users. The use of modern algorithms and diverse sources of documents help Unicheck to be trusted by everyone. It shows the duplicate content in the most detail for users to refer to.

Unicheck's online interface is quite simple. Users upload their documents and Unicheck can then give a full summary of similarities, citations and references. In addition, it can show you where these problems are directly and provide more detailed information about each issue.

Unicheck can also tell you the percentage of your files that are cited, referenced, sourced, and more. In addition, there is a built-in library where you can store a lot of documents.

Pros:

• Supports many file formats and allows batch downloading.
• Show detailed reports including percentages, duplicate content, duplicate sites, etc.
• Users can customize search settings.
• Google docs in-text checking support.
• Real-time content scoring is possible.

Cons:

• You must sign up for an account to try it out.
• More advanced features are only available when users upgrade their account.
  

Link: https://unicheck.com/

ProWritingAid Website can check for duplicate content across multiple websites. A diverse system of articles, scholarly studies, or printed publications is available in the database. As a result, the accuracy is relatively high.

In addition, you can use ProWritingAid to correct mistakes in English articles. Or to check the error of a long email that needs to be sent to the boss, a 5000 word essay to a teacher or simply to check if your writing is correct or not, etc. Like, creative words like novels or academic texts, ProWritingAid can help you.

Pros:

• Ability to self-edit text
• Provides more than 20 in-depth written reports on the respective topic
• Link applications with Word, Chrome, Google Docs, Gmail,... easily
• Simple interface, convenient for users
• Supports multiple file formats
• Ability to support searching for duplicates of work, including data, questions, ideas, languages,...
• Use speech to operate the application

Link: https://prowritingaid.com

Viper can scan a large number of academic articles and other online websites, and then compare it with the text you need to check to give 100% accurate plagiarism results.

In particular, unlike Turnitin, this software can be used completely free of charge and can be installed with other education management software to check the current plagiarism status of students.

Viper allows you to select the type of document content to be scanned such as education, finance, cover letter, etc. to support quick scanning. At the same time, Viper also automatically links to the nearest local server to help improve the speed of fast and accurate plagiarism scanning for users.

Viper provides users with the most complete plagiarism results, including word count and percentage of plagiarism throughout the text.

Pros:

• All free.
• Almost 100% accurate.
• Check the article by comparing with 10 billion sources.
• Side-by-side comparison of the original text and the plagiarized text.
• Scan and compare with files on your computer, on the Internet.
• Intuitive and easy to use interface.
• The software automatically generates a report after the scan is complete.
• Select the area and text content to limit the search process.

Cons:

• Viper is geared towards educational uses and not for bloggers or online publishers.

Link: https://www.scanmyessay.com/