Check-Plagiarism

Check-Plagiarism (check-plagiarism.com) is an online content originality platform that goes beyond a standalone plagiarism checker to include a rephraser, summarizer, grammar checker, a dedicated WordPress plugin, and full plagiarism API access — all included in every paid plan. Designed for bloggers, content marketers, SEO professionals, students, and educators, Check-Plagiarism offers four distinct billing cycles — weekly, monthly, semi-annual, and annual — giving users maximum flexibility to match their subscription to actual usage patterns. The annual plan is particularly notable, covering 450,000 words across 1,500 pages for a full year at an effective rate of $8.33 per month ($99.99 billed annually), making it one of the most word-volume-efficient plagiarism checking subscriptions available. The annual plan also exclusively adds a Dedicated Manager, dedicated Support, and POP (proof of plagiarism certificate) — features not available on shorter billing cycles.

Check-Plagiarism's Deep Search feature is included on all plans and scans content against a broader range of sources than a standard surface-level search — examining academic databases, web pages, published content, and specialist repositories for matches. Each plan tier sets a maximum word count per individual search: 7,000 words per search on weekly, 20,000 words per search on monthly, semi-annual, and annual plans. The built-in Rephraser (1,000–2,000 words per search depending on plan) allows users to rewrite flagged passages directly within the platform, and the Summarizer condenses long documents for quick review. The grammar checker rounds out the writing quality tools, making Check-Plagiarism a practical all-in-one platform for writers who need content verification and improvement in a single subscription.

How Check-Plagiarism Works

Users paste text or upload a document and select the deep search option, which scans against multiple source types. Results return a similarity report with percentage scores and highlighted matched sections linked to their original sources. The Rephraser can be applied directly to flagged passages to generate alternative phrasings that reduce similarity. The Summarizer condenses lengthy content into a shorter overview. The grammar checker analyses the same text for grammatical errors alongside the plagiarism scan. The WordPress plugin allows content to be checked directly from the WordPress editor without leaving the CMS dashboard. Plagiarism API access enables developers to programmatically submit content and receive similarity results in their own applications. All plans run without advertisements for a clean working environment.

Key Features

• Deep Search — comprehensive plagiarism scanning against academic databases, web pages, and published content on all plans
• High word volumes — from 10,000 words/34 pages (weekly) to 450,000 words/1,500 pages (annual)
• Plagiarism Checker — similarity detection with percentage scores and matched passage highlighting with source links
• Rephraser — rewrite flagged or duplicate passages with AI-generated alternative phrasing (1,000–2,000 words/search depending on plan)
• Summarizer — condense long documents into shorter summaries for quick content review
• Grammar Checker — analyse submitted text for grammatical errors alongside plagiarism scanning
• WordPress Plugin — check content for plagiarism directly from the WordPress editor without leaving the CMS
• No Ads — all paid plans run without advertising for an uninterrupted working experience
• Plagiarism API — programmatic content submission and similarity result retrieval for custom application integration
• Dedicated Manager, Support, and POP — annual plan exclusively includes a dedicated account manager, priority support, and a proof of plagiarism certificate

Check-Plagiarism Pricing

• Weekly — $4.99/week — 10,000 words, 34 pages, deep search (7,000 words/search), plagiarism checker, rephraser (1,000 words/search), summarizer, grammar checker, WordPress plugin, no ads, 2× faster processing, detailed reports, plagiarism API. No dedicated manager, support, or POP.
• Monthly — $14.99/month — 35,000 words, 116 pages, deep search (20,000 words/search), plagiarism checker, rephraser (1,500 words/search), summarizer, grammar checker, WordPress plugin, no ads, 2× faster, detailed reports, plagiarism API. No dedicated manager, support, or POP.
• Semi-Annual — $16.66/month ($100 billed every 6 months) — 200,000 words, 666 pages, deep search (20,000 words/search), rephraser (2,000 words/search), all features above. No dedicated manager, support, or POP.
• Annual — $8.33/month ($99.99 billed every 12 months) — 450,000 words, 1,500 pages, deep search (20,000 words/search), rephraser (2,000 words/search), all features above plus dedicated manager, dedicated support, and POP (proof of plagiarism certificate).

No permanent free plan. Annual billing at $8.33/month effective rate provides the highest word volume and exclusive premium features. Always verify current rates at check-plagiarism.com/pricing.

Who Should Use Check-Plagiarism?

Check-Plagiarism is well-suited to bloggers, content marketers, SEO professionals, academic writers, and educators who need a comprehensive writing integrity toolkit beyond a basic plagiarism checker. The inclusion of a rephraser, summarizer, grammar checker, WordPress plugin, and plagiarism API in every plan — rather than as separate add-ons — makes it a strong all-in-one value for content teams. The annual plan offers exceptional word-volume-per-dollar for high-output content operations, and the exclusive dedicated manager and POP certificate make it appropriate for professional or academic contexts where formal plagiarism documentation is required. The weekly plan suits users with one-off checking needs who do not want a monthly commitment. Teams needing AI content detection alongside plagiarism checking, or those requiring team-based multi-seat access, should evaluate whether Check-Plagiarism's feature set covers those requirements.

Frequently Asked Questions