- Plagiarism checks: Compare text with online sources and show matching material.
- Free access: Run basic checks without a paid plan.
- Monthly and annual plans: Buy larger word allowances for regular use.
- File uploads: Submit supported documents instead of pasting text.
- Writing utilities: Use related grammar, paraphrasing and SEO tools from the same site.
Duplichecker.com
Online plagiarism detection and writing utility suite for students and professionals
Updated August 11, 2026
Duplichecker.com Overview
Duplichecker.com is a browser-based writing toolbox centered on plagiarism checks. Users can paste text or upload a file, review matching online material, and move to related grammar, paraphrasing, or SEO tools on the same site.
It can be useful for a quick first check, especially for students and web writers. Anyone handling sensitive work should still review the site’s upload and data-handling terms before submitting it.
Key Features
Pricing
| Plan | Price | What is included |
|---|---|---|
| Free tools | $0 | Basic browser-based plagiarism and writing tools |
| 72,000-word plan | $19.99/month | Monthly word allowance |
| 210,000-word plan | $49.99/month | Higher monthly word allowance |
| Annual options | $191.90/year or $479.90/year | Displayed as $15.99 or $39.99 per month when billed annually |
Pricing source: official pricing page.
Pros
Compared with |
Why this product may fit better |
|---|---|
| Turnitin | Duplichecker can be opened by anyone and includes a free route. Turnitin normally depends on school access, so Duplichecker is easier for a quick personal check. |
| Quetext | Duplichecker groups plagiarism, grammar, paraphrasing and SEO tools on one site. Quetext has a clearer originality product, while Duplichecker offers a wider set of small utilities. |
| Copyscape | Duplichecker offers monthly and annual word allowances for people who check often. Copyscape uses pay-as-you-go searches, which may suit occasional use better. |
| Grammarly | Duplichecker includes several browser tools without requiring an editor extension. Grammarly works more smoothly while writing, but Duplichecker can handle one-off tasks from a single website. |
Cons
Compared with |
Where this product may fall short |
|---|---|
| Turnitin | Turnitin has instructor controls and academic collections that a public web checker cannot match. Duplichecker should not be used as a replacement for a school's own similarity process. |
| Quetext | Quetext explains its checker limits and originality workflow more clearly. Duplichecker's large tool catalog and several word-based plans can make the main product harder to judge. |
| Copyscape | Copyscape offers web monitoring and an established API for publishers. Duplichecker has more general tools, but its publishing and monitoring workflow is less focused. |
| Grammarly | Grammarly gives live suggestions across many apps and documents. Duplichecker requires users to move work into separate web tools for most checks. |
Reviews
- Trustpilot: TrustScore 2.5/5 from 38 reviews. Recent feedback includes praise for basic functionality, but repeated complaints concern cancellation steps, payment confusion and access to results.
- EssayScam forum: Forum participants disagree about the tool. Some like the free paste and upload workflow, while others question reliability and warn against putting academic work into a free service without checking its data policy.
- AI Detect Plus review: AI Detect Plus highlights multilingual grammar tools and downloadable plagiarism reports. Its review also raises concerns about expiring credits, subscription value and support during payment disputes.
