Dupli Plagiarism Checker

Verified!

Plagiarism Checker offered by DupliChecker. Completely free and accurate online tool to check plagiarism. Just Copy & Paste to detect Copied content.

(4.6)
Average rating 4.6 out of 5

Free, Freemium

Tool Information

Company

Dupli Checker

Founded

2007

Pricing

Free, Freemium

About Dupli Checker

Dupli Checker is a freemium online plagiarism detection and content optimization tool trusted by students, writers, bloggers, and digital marketers. It scans text against millions of web pages using AI-powered deep search, supports multiple file formats, and offers a suite of tools—all without requiring registration. Dupli Checker delivers lightning-fast results with easy-to-read percentage-based reports.

Pros

  • ✔️ Freemium model with no registration needed for basic use.
  • ✔️ Deep‑scan technology for accurate detection of duplicate content.
  • ✔️ Supports multiple file types: .tex, .txt, .doc, .docx, .odt, .pdf, .rtf.
  • ✔️ Multilingual support: Spanish, Russian, Portuguese, Dutch, Indonesian, Italian, Arabic, etc.
  • ✔️ Fast results with color-coded duplicate highlighting and percentage-based uniqueness score.
  • ✔️ Additional tools available: grammar check, SEO utilities, keyword research, paraphrasing, readability scoring.

Cons

  • ✖️ Free plan has a limited word count per scan (typically ~1,000 words).
  • ✖️ Full feature access requires paid subscription plans, which can be relatively costly for heavy users.
  • ✖️ Company and founding details are scarce and not widely published.

Key Features

✔️ Deep AI‑powered plagiarism detection across millions of web pages.
✔️ Supports a wide range of file formats (.tex, .txt, .doc/.docx, .odt, .pdf, .rtf).
✔️ Multilingual interface and detection (Spanish, Russian, Portuguese, Dutch, Indonesian, Italian, Arabic, etc.).
✔️ Highlights duplications with color‑coded texts and gives plagiarism‑vs‑unique percentages.
✔️ No sign‑up needed for basic usage; offers freemium with paid plans for extended features.
✔️ Additional content tools available: grammar checker, SEO tools, keyword analysis, paraphrasing, readability scoring.

 

English Thumbnail
Check Plagiarism, Report, and Automatically Reduced Plagiarized Content using Dupli-Checker
Hindi Thumbnail
Duplichecker Tutorial: How to Use Duplichecker? FREE Plagiarism Checker Online

Ready-to-Use Prompts

Copy and customize these prompts for your specific needs

1. Market Trend Analysis

 “Research the current market trends of [Industry: Electric Vehicles, EdTech, Healthcare, etc.]. Include data from the past [Number] years, key competitors, growth opportunities, and forecasted future trends.”

2. Environmental Impact Study

“Conduct a research report on the environmental impact of [Activity: Deforestation, Plastic Usage, Mining]. Explain causes, short-term and long-term effects, and propose sustainable alternatives with supporting data.”

3. Consumer Behavior Study

 “Research how [Consumer Group: Gen Z, Millennials, Urban Families] make purchase decisions for [Product Category: Electronics, Fashion, Food]. Include survey data, psychological insights, and brand influence analysis.”

4. Content Idea Generator

“Generate [10] unique content ideas for [Niche or Industry, e.g., Finance, Tech, Health]. Each idea should include a [Title, One-Line Description, and Target Audience].”

5. Article Rewriter / Simplifier Prompt

“Rewrite the following article in [Simpler or More Engaging] language while keeping [Original Meaning and Facts] intact. Improve [Flow, Readability, and SEO Keywords] for a [General Audience].”

Customer Reviews


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Pricing Plans

Weekly Plan

Plan: Basic IV
Cost: $9/week

Features:

75 Searches
21,000 Total Words
API Unavailable

Monthly Plan

Plan: Basic V
Cost: $25/month

Features:

300 Searches
95,000 Total Words
API Unavailable

Yearly Plan

Plan: Basic II
Cost: $110/year

Features:

1,200 Searches
300,000 Total Words
API Available

Use Cases

Check research papers for copied or duplicate content.

Verify that assignments are original before submission.

Find matching sources to cite them correctly.

Detect unintentional plagiarism in reports or essays.

Ensure research writing is clean and authentic.

[tool_use_cases

Bloggers/content writers ensuring originality before publication.

Digital marketers leveraging SEO tools and plagiarism detection to improve content quality.

Non‑technical users wanting fast checks without registration hassles.

Writers needing an all-in-one platform with grammar, paraphrasing, and plagiarism checking tools.

Casual users wanting basic integrity checks.

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