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The Role of Plagiarism Checker Tools in Online Content Creation and SEO in 2024

Importance of Plagiarism Checker Tools:


Source: Plagiarism

  1. Content Originality and Credibility: Plagiarism checkers ensure that the content published on a website is original and not copied from other sources. Original content enhances the credibility of the site, establishing it as a reliable source of information or services.
  2. SEO Performance: Search engines like Google prioritize original content. Websites featuring duplicated content can face penalties, resulting in lowered search engine rankings. Plagiarism checker tools help identify and rectify duplicate content issues, thus positively impacting SEO performance.
  3. Protecting Intellectual Property: For content creators, ensuring their work isn’t plagiarized is crucial. Plagiarism checkers help authors and creators protect their intellectual property by detecting unauthorized use of their content across the web.
  4. Enhanced User Experience: Original and unique content provides value to visitors. It engages them, keeps them interested, and answers their queries effectively. Plagiarism-free content contributes to a better user experience, which is essential for retaining visitors and reducing bounce rates.
  5. Academic and Professional Integrity: In academic or professional settings, originality is paramount. Plagiarism checker tools assist students, researchers, writers, and professionals in ensuring that their work is authentic and free from plagiarism, maintaining academic and professional integrity.

How Plagiarism Checker Tools Work:

  • Text Comparison: These tools compare the text of a given document against a vast database of existing content available online. They highlight similarities and provide detailed reports on potentially duplicated sections.
  • Percentage of Similarity: Plagiarism checkers display the percentage of similarity between the submitted content and existing online sources, indicating the extent of potential plagiarism.
  • Citation Checks: Some advanced tools can differentiate between correctly cited content and actual instances of plagiarism, offering insights into proper citation practices.

Top 7 Plagiarism Detectors of 2024:

1. Grammarly


Grammarly stands as the leading plagiarism checker and online grammar tool in today’s landscape.

Its plagiarism detection functionality scrutinizes your content against a database containing 16 billion articles, papers, and essays online. This comprehensive search provides exact percentage matches and highlights suspected plagiarism instances.

A notable advantage of Grammarly lies in its Chrome extension, extending its functionality across email services, social media platforms, WordPress, as well as communication platforms like Slack and Discord. This ensures impeccable grammar wherever you write online.


  • Chrome extension facilitates grammar editing in WordPress and Google Docs.
  • Incorporates an AI-driven text generator.
  • Assists in proofreading and plagiarism checks.
  • User-friendly interface.


  • Limitations in the free version.
  • Occasional bugs in the extension, leading to marked errors persisting even after corrections.
  • Plagiarism tool functions exclusively through the Grammarly cloud-based editor.

Reasons for Recommendation: Grammarly stands out as an exceptional tool encompassing spelling, grammar, and plagiarism checks. Its Chrome extension simplifies usage, especially for website owners working within the WordPress editor.

Pricing: Grammarly offers a free version that alerts about plagiarism but lacks detailed identification of plagiarized sections. For precise detection, upgrading to GrammarlyGO (the paid version) starting at $12 per month is necessary. The premium plan includes AI-generated content features and enhanced plagiarism detection.

2. Copyscape


Copyscape operates as a cloud-based plagiarism detection tool designed to identify potential instances of content plagiarism. It offers multiple input methods: users can input a website URL, paste text, or upload a file for analysis.

This tool is particularly valuable for professional writers and freelancers committed to combating plagiarism.

Copyscape functions by scrutinizing text against an extensive database of existing content, searching for exact matches, paraphrased content, and similarities. The software generates a similarity score for each segment of text, indicating the likelihood of plagiarism, with higher scores suggesting a greater chance of plagiarism.

For WordPress users, integrating the Copyscape plugin enables seamless connectivity to Copyscape Premium using API credentials. This integration appears in the content editor’s sidebar, allowing users to run a ‘Copyscape Check’ and view instances of plagiarism at the top of their post.

Copyscape Premium Pros:

  • Batch search capability.
  • Integration with tools like Jasper for ensuring generated text is plagiarism-free.
  • Flexible pricing options.
  • Extensive language support.
  • Easy integration with WordPress via API.


  • Inability to save reports.
  • Slow customer support.
  • Limited device support.

Reasons for Recommendation: Copyscape is a user-friendly plagiarism checker leveraging a robust search engine-based database for accurate results. It’s ideal for content agencies and blogs of all sizes, especially beneficial for multilingual content due to its extensive language support.

Pricing: Each plagiarism search costs $0.03, with an additional $0.01 for every 100 words scanned.


originality serves as a plagiarism and AI content detection tool tailored for writers and website owners. This platform simplifies the process of verifying content uniqueness by comparing it against publicly available web content, utilizing an AI detector.

For those hiring writers to create blog posts, ensuring avoidance of AI-generated content becomes crucial.

However, complete reliance on AI detection tools isn’t recommended unless it guarantees 100% AI detection. These tools are particularly adept at identifying instances where someone has directly copied and pasted content, such as from ChatGPT. Nonetheless, exclusive reliance on AI tools isn’t advised due to potential inaccuracies.


  • Affordable usage, offering detection of 200,000 words of AI content with $20 credits.
  • Highlights text and links to suspected plagiarized content sources for easy identification.
  • Shareable reports available for team collaboration.
  • Includes a readability checker to assess article readability.
  • Convenient Chrome extension for accessibility.


  • Possibility of false positives in AI detection.
  • Lack of a free trial.

Reasons for Recommendation: proves beneficial for writers, agencies, web designers, and business owners aiming to authenticate content as non-AI generated or copied from other sources. The platform offers additional features like content readability checks, a Chrome extension, website-wide scans, and team collaboration.

Pricing:’s base subscription costs $14.95, providing 2,000 credits and a comprehensive array of features including AI scanning, automated fact checking, plagiarism detection, readability assessment, and more. Each credit allows scanning of 100 words, amounting to 200,000 words per month. Additionally, pay-as-you-go options are available for higher word count scans.

4. SEMrush SEO Writing Assistant


The SEMrush SEO Writing Assistant functions as a comprehensive tool for crafting and optimizing SEO-centric content, equipped with an in-built plagiarism detection feature.

Once content is typed, imported, or pasted into the editor, this tool provides suggestions for readability, originality, SEO enhancement, and tone of voice.

It offers a clear percentage indicating the originality of the text and displays sources for any identified duplicated content. Additionally, a paraphrasing tool assists in adjusting wording to avoid plagiarism. Users can also utilize its AI capabilities to generate new text, facilitating expansion, summarization, or simplification of specific sections.

SEMrush SEO Writing Assistant Pros:

  • Provides plugins for WordPress, MS Word, and Google Docs.
  • Enables content rephrasing directly within the content editor.
  • Conveniently combines content editing and plagiarism checks.
  • Offers multiple templates catering to various content types.


  • Lacks a content-sharing feature or built-in editors for content updates.

Reasons for Recommending SEMrush SEO Writing Assistant: This tool offers a comprehensive set of features encompassing content outlining, generation, rephrasing, editing, and proofreading.

For those already leveraging SEMrush for keyword research and content planning, the SEO Writing Assistant proves invaluable in creating optimized blog posts for higher search engine rankings.

Pricing: While SEMrush offers a free version, access to plagiarism checks, SEO recommendation reports, and its array of powerful features necessitates an SEMrush Pro subscription. Additionally, each set of 10 plagiarism checks incurs a cost of $5.

5. Scribbr


Scribbr serves as a plagiarism detector within a suite of tools, including an APA reference generator and an academic proofreader, catering to authors, journalists, and non-profit organizations aiming to uphold the integrity and quality of their written content.

Especially suitable for formal content like research papers, white papers, or fact-driven articles, where citations are essential, Scribbr’s accurate citation generator saves substantial time and effort.

With a vast database checking content against 99 billion web pages and 8 million publications across 20 languages, Scribbr proves valuable for non-native writers.

In addition to plagiarism detection, Scribbr offers proofreading services where editors provide expert feedback on writing flow and structure, ensuring clear and concise presentation of ideas, thereby polishing the writing to resonate effectively with the audience.


  • Highly accurate plagiarism checker detecting even subtly rephrased content.
  • Safeguards user privacy, not uploading documents into its database.
  • Swift and user-friendly.
  • Includes a citation generator.


  • Higher cost at $0.016 per word.
  • Limited customer support availability.

Reasons for Recommending Scribbr: Professionals requiring fact-intensive or academic writing benefit greatly from Scribbr. It’s suitable for drafting legal documentation such as privacy policies or terms and conditions for online stores.

Pricing: Scribbr offers a free version that identifies potential plagiarism but requires purchasing the premium version (starting at $19.95 depending on word count) to access full plagiarism reports. The word-based pricing structure might be more expensive compared to subscription-based plans like Grammarly.

6. Copyleaks


Copyleaks functions as a plagiarism and AI content detection tool, ensuring content authenticity for successful Google indexing.

Utilizing advanced AI content detection methods, this software identifies plagiarized and AI-generated content with accuracy.

The process is straightforward: paste the text for checking, and within seconds, Copyleaks provides a probability score indicating the likelihood of plagiarism and AI usage.

Enhancing convenience, Copyleaks offers a browser extension enabling online page checks for AI-generated content. It stands out as one of the few tools capable of browser-based plagiarism detection, streamlining the tedious copy-and-paste process.

For agency owners or content team managers, integrating Copyleaks via API within websites eliminates the need for team members to visit the Copyleaks website.

Moreover, it detects AI-generated code, aiding in determining if developers utilized AI tools like ChatGPT for custom code writing and integration.


  • Supports various file formats, including PDFs.
  • Highly convenient browser extension.
  • Integration capabilities with websites and Learning Management Systems (LMS).


  • Potential variance in accuracy.

Reasons for Recommending Copyleaks: Trusted by reputable institutions like SEMrush and Medium, Copyleaks caters to enterprise-level companies. Its platform allows team members from various departments to submit content, store internal documents for future comparisons, enabling comprehensive scans and results.

Pricing: Copyleaks offers free scanning for the initial 250 words. Starting at $10.99, the most affordable plan allows scanning up to 100 pages monthly. Plans can be upgraded based on individual needs.

Read more about AI SEO here.

7. Secure Copy Content Protection and Content Locking


The Secure Copy Content Protection and Content Locking plugin serves as an effective measure against web scraping and content theft.

Though not a plagiarism detector, this tool serves as a deterrent against unauthorized content usage and theft. Safeguarding your content helps preserve its uniqueness, positively impacting search engine rankings.

Upon activation, the plugin disables right-click, copy-paste, and content selection shortcut keys. It also enables the addition of watermarks to images, preventing their unauthorized use on other websites. Furthermore, the plugin restricts access to ‘Inspect Elements,’ providing an additional layer of protection against content theft.

Web scraping involves automated data extraction using bots or scripts. Disabling ‘Inspect Elements’ complicates web scraping, as it hinders the bots from analyzing a site’s HTML structure for data extraction.


  • User-friendly interface.
  • Prevents content theft and web scraping by disabling right-click functionality.
  • Allows password protection for specific pages.
  • Compatible with both desktop and mobile devices.


  • Determined users may still find alternative methods to copy content.

Reasons for Recommending Secure Copy Content Protection and Content Locking: Essential for business websites, this plugin safeguards original content, aligning with search engines’ preference for uniqueness.

Pricing: The free version offers fundamental content protection and right-click disabling. The paid plan, available at a one-time payment of $49, includes advanced features like image watermarking, IP or country blocking, and more.


Plagiarism checker tools are invaluable for maintaining originality and quality in online content. They help prevent penalties from search engines by identifying and addressing duplicated content. By using these tools, you can enhance your website’s SEO ranking and ensure authenticity in your work, ultimately fostering trust and credibility among your audience.

FAQs on Plagiarism Checkers:

Are plagiarism checker tools accurate?

Plagiarism checkers use sophisticated algorithms to detect similarities between texts. While they are quite accurate, no tool is perfect. It’s advisable to use multiple tools and cross-reference results for better accuracy.

Do plagiarism checkers detect all types of plagiarism?

Plagiarism checkers can identify verbatim copy-pasting, but they may not always catch paraphrased or heavily modified content. Manual review and understanding of the tool’s capabilities are essential.

Are there free plagiarism checker tools available?

Yes, there are several free plagiarism checkers, but they often have limitations in terms of word count, number of checks, and depth of analysis. Premium versions usually offer more comprehensive features.

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