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A 7 day auto-renewing trial is advertised on the homepage. The displayed prices are placeholder values, so the actual trial charge and renewal amount need checking on the pricing page before signing up.
Learn morePlagiarism Checker by JustDone
Plagiarism detection inside a broader AI writing suite
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What is Plagiarism Checker by JustDone?
Plagiarism Checker by JustDone is an AI checker tool. A plagiarism checker bundled into the JustDone AI writing suite. It flags copied passages and hands off to a built-in paraphraser, with AI detection, humanizing, grammar checking, chat and a Chrome extension in the same account.
Plagiarism Checker by JustDone is one module in a larger AI assistant built for research, writing and studying. The checker is designed to flag copied passages in a draft, and the company positions it as a first step rather than a standalone tool: the natural follow-up in the same workspace is the Paraphraser, which rewrites flagged text so the wording reads as original. That pairing is the real product, since detection without a rewrite path tends to leave users stuck. The broader JustDone suite is what separates this from single-purpose plagiarism scanners. The homepage lists a Plagiarism Detector, AI Detector, Text Humanizer, Paraphraser, Grammar Checker and Image Generator among more than 120 tools, and the AI Chat adds document chat (PDF, DOC, TXT), website chat, internet search and real-time data on top of GPT4. A Chrome extension carries the assistant onto any page, which matters for people who check drafts while reading sources in the browser rather than in a separate dashboard. The tool is aimed at students, researchers, bloggers and marketing writers who need a fast originality pass before submitting or publishing. Typical use is straightforward: paste or upload a draft, review the matches, then send suspect sections to the paraphraser or humanizer and run a grammar check before the final read. Because the same account covers AI detection and humanizing, it suits people who also worry about machine-generated text being flagged, not just copied text. Where it sits among alternatives is worth being clear about. Dedicated plagiarism services publish large comparison databases and formal similarity reports, and JustDone does not advertise that on its homepage. This is better understood as an all-in-one writing workspace where plagiarism checking is one stop in a longer editing loop, rather than a citation-grade integrity platform for institutions.
How do you use Plagiarism Checker by JustDone?
1Check the plans and start the trial
Open the pricing page and review the subscription tiers before committing. The homepage describes a 7 day trial that converts to a monthly auto-renewing plan, so confirm the current figures there since the marketing text shows placeholder values.2Open the plagiarism checker
Go to the plagiarism checker page to see how the tool is presented and to reach the input area. Sign in or create an account when prompted.3Submit your draft
Paste the text you want to test into the checker and run the scan. Review the passages it flags as matching before deciding what to keep and what to rewrite.4Rewrite flagged passages
Send the matched sections to the paraphraser so the wording changes while the meaning holds. Then run the grammar checker for a final pass on the rewritten text.5Screen for AI-generated text
Run the same draft through the AI detector, particularly if it will be submitted for review. If it reads as machine-written, pass it through the humanizer and recheck.6Install the browser extension
Add the Chrome extension if you check drafts while reading sources online. It keeps the assistant available on any page instead of forcing a switch back to the dashboard.
Pros and cons
Pros
- Plagiarism checking sits beside a paraphraser, so flagged passages can be rewritten without leaving the workspaceAI
- Bundled with AI detection, a humanizer and a grammar checker, which covers the full pre-publish passAI
- Chrome extension lets the assistant work on any website rather than only inside a dashboardAI
- AI Chat handles PDF, DOC and TXT uploads and supports web search with real-time dataAI
- Public Trustpilot rating of 4.3 from roughly 9,700 reviews gives a rough sense of user satisfactionAI
Cons
- The homepage gives no detail on the comparison corpus, so the reach of the plagiarism database is unclearAI
- No dated similarity report or citation output is advertised, which weakens it for formal academic submissionAI
- The site text shows placeholder prices for the 7-day trial, so the real trial cost must be confirmed on the pricing pageAI
- Capabilities are spread thinly across 120+ listed tools, so depth on any single one is hard to verify from marketing pagesAI
- Bundled subscription means you pay for the wider suite even if all you need is detectionAI
How much does Plagiarism Checker by JustDone cost?
Pricing
Subscription only, with auto-renewal and cancellation from account settings. The homepage describes a 7 day trial followed by a monthly charge and also shows a $19.99/month plan, but the trial figures render as $00.00 placeholders, so current pricing has to be confirmed on the pricing page.
Learn moreSupport
The homepage does not describe support channels. A Trustpilot profile with a 4.3 rating from about 9,700 reviews is linked, and the published replies to reviews point to an email address for feedback.
Integrations
No third-party integrations are named on the homepage. The Chrome extension is the main way the tool reaches outside its own interface, alongside document upload for chat.
Features
Plagiarism detection paired with a paraphraser, plus an AI detector and text humanizer for machine-written content. The wider suite adds a grammar checker, image generator, AI Chat with PDF, DOC and TXT uploads, website chat, internet search with real-time data and a built-in prompt improver on GPT4. A Chrome extension extends the assistant to any site.
Learn moreFrequently asked questions about Plagiarism Checker by JustDone
How much does Plagiarism Checker by JustDone cost?
Subscription only, with auto-renewal and cancellation from account settings. The homepage describes a 7 day trial followed by a monthly charge and also shows a $19.99/month plan, but the trial figures render as $00.00 placeholders, so current pricing has to be confirmed on the pricing page.Does Plagiarism Checker by JustDone offer a free trial?
A 7 day auto-renewing trial is advertised on the homepage. The displayed prices are placeholder values, so the actual trial charge and renewal amount need checking on the pricing page before signing up.How do you use Plagiarism Checker by JustDone?
The walkthrough on this page covers 6 steps: 1. Check the plans and start the trial 2. Open the plagiarism checker 3. Submit your draft 4. Rewrite flagged passages 5. Screen for AI-generated text 6. Install the browser extension.What platforms does Plagiarism Checker by JustDone support?
Plagiarism Checker by JustDone is available on Web App and Browser extension.What does Plagiarism Checker by JustDone integrate with?
No third-party integrations are named on the homepage. The Chrome extension is the main way the tool reaches outside its own interface, alongside document upload for chat.What are the limitations of Plagiarism Checker by JustDone?
The homepage gives no detail on the comparison corpus, so the reach of the plagiarism database is unclear. No dated similarity report or citation output is advertised, which weakens it for formal academic submission. The site text shows placeholder prices for the 7-day trial, so the real trial cost must be confirmed on the pricing page.
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Added10/21/2026
Platforms
Web AppBrowser extension
Pricing
SubscriptionFree Trial
