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Copyscape Plagiarism Checker

Enterprise-grade plagiarism detection for web, documents, and AI-generated content

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  • Overview
  • Features
  • Pricing
  • Pros
  • Cons
  • Reviews

Copyscape Plagiarism Checker Overview

  • Updated February 6, 2026

Copyscape is a long-established plagiarism detection tool used to identify duplicate content across the web. It helps writers, publishers, SEO professionals, and enterprises verify content originality before publishing and monitor unauthorized reuse afterward.

With free searches, a pay‑as‑you‑go Premium option, APIs, and automated monitoring via Copysentry, Copyscape supports both manual checks and large-scale, automated plagiarism prevention workflows.

Key Features

  • Web Plagiarism Detection: Scans the internet to find exact and near-duplicate copies of your content.
  • Copyscape Premium: Advanced searches with copy-paste input, file uploads, and deeper indexing.
  • Batch & Site Search: Check up to 10,000 pages in a single operation for large websites.
  • API Access: Automate plagiarism checks within CMS, editorial, or AI content workflows.
  • Copysentry Monitoring: Continuously monitors the web and sends alerts when new copies appear.

Price

Plan Price Featured
Free Search $0 (Limited Searches) Basic duplicate checks, URL-based search, No API access
Copyscape Premium $0.03 per search (up to 200 words) + $0.01 per extra 100 words (Pay-as-you-go) Copy-paste checks, PDF & Word uploads, Batch search & API access
Copysentry Professional $4.95/mo (Up to 10 pages) + $0.25/mo per additional page Automatic monitoring, Email alerts, Ongoing plagiarism detection

Price details: https://www.copyscape.com/premium.php

Pros

Competitor

Pros
Grammarly Copyscape focuses more deeply on web-wide duplicate detection, making it better for publishers and SEO teams. Its pay-as-you-go pricing can be more economical for users who only need occasional checks, while Grammarly bundles plagiarism behind a broader writing assistant subscription.
Turnitin Compared to Turnitin’s academic-heavy ecosystem, Copyscape is easier to access and use for commercial content teams. It avoids institutional contracts and offers direct pricing, which suits freelancers, agencies, and website owners needing fast originality checks.
Quetext Copyscape has a longer track record and stronger reputation for SEO-related duplicate content detection. Its API and batch search tools provide more flexibility for large websites, whereas Quetext focuses more on individual document analysis.
Originality.ai Copyscape is more established for detecting exact web copies and monitoring stolen content over time. For publishers mainly worried about scraping and copyright theft, Copyscape’s Copysentry alerts offer clearer ongoing protection.
Plagscan Copyscape offers simpler onboarding and transparent usage-based pricing. Its interface is lightweight and fast, making it practical for non-academic users who want quick results without managing complex reports or institutional settings.

Cons

Competitor

Cons
Grammarly Unlike Grammarly, Copyscape does not provide grammar correction, rewriting suggestions, or real-time writing assistance. Users seeking an all-in-one writing and editing tool may find Copyscape too narrowly focused on plagiarism detection alone.
Turnitin Copyscape lacks Turnitin’s deep academic databases and citation analysis tools. For universities or formal research institutions, Copyscape may miss matches found in proprietary academic journals and student paper repositories.
Quetext Quetext offers more visual similarity reports and interactive highlighting. Copyscape’s reports are comparatively basic, which may feel less intuitive for users who want detailed, document-style plagiarism breakdowns.
Originality.ai Originality.ai combines plagiarism and AI-detection scoring in one interface. Copyscape focuses mainly on plagiarism, so teams heavily auditing AI-generated text may need an additional tool to cover AI probability analysis.
Plagscan Plagscan provides more structured reporting for compliance and institutional reviews. Copyscape’s simpler output may not satisfy organizations that require formal documentation, audit trails, or standardized similarity reports.

Verified Customer Reviews

  • AIDetectPlus Review (Rating: 4/5): Users praise its simplicity and reliable web detection, but note that costs can add up for frequent or long document checks.
  • Originality.ai Review (Rating: 3.5/5): Reviewers value its accuracy and long-standing reputation, while criticizing the dated interface and lack of built-in AI analysis.
  • Trustpilot Review (Rating: 2.5/5): Customers appreciate its effectiveness for finding copied content, but report concerns about pricing clarity and limited customer support.
  • Reddit/r/freelanceWriters Review (Rating: 4/5): Freelancers see it as an industry standard that clients trust, though some dislike paying for checks that clients often require.
  • Tamzid Ahmed Review (Rating: 4/5): The reviewer finds Copyscape dependable for detecting copied content, but mentions limited features beyond core plagiarism checking.