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🔍 Advanced Plagiarism Checker

Plagiarism Checker
Originality Score + Deep Analysis

Detect duplicate content, check text originality, compare two documents, sentence-level similarity analysis & word frequency. 100% free — no signup.

✓ Originality Score
✓ Sentence Analysis
✓ Compare 2 Texts
✓ Duplicate Detection
✓ Word Frequency
✓ 100% Free
🔑
Google Search API — Internet Plagiarism Check
Add your API key to check content against internet sources and get real source links. Free: 100 queries/day.
How to get API key (5 min setup):
1. Enable Custom Search API   2. Create Search Engine (get cx ID)   3. Create API Key
Words: 0
Sentences: 0
Chars: 0
Your TextClear
Analysis Result
Your analysed text will appear here...

🟢 Original   🔴 Duplicate   🟡 Similar patterns
📚 About Plagiarism Checking

What Does This Tool Check?

  • Repeated phrases: Detects exact or near-identical phrase patterns within your text
  • Sentence uniqueness: Scores each sentence for originality
  • Lexical diversity: Measures how varied your vocabulary is
  • Self-plagiarism: Finds repeated sections within the same document
  • Text comparison: Calculates similarity % between two documents

Originality Score Explained

  • 90–100% Highly Original — Excellent unique content
  • 75–90% Mostly Original — Good, minor repetitions
  • 50–75% Moderate — Notable repeated patterns
  • Below 50% Concern — High repetition, rewrite needed

Note: This tool detects internal patterns. For internet plagiarism, submit to Google Search Console.

Who Should Use This?

  • Students: Check essays and assignments before submission
  • Content Writers: Verify article uniqueness before publishing
  • Teachers: Compare student submissions
  • Bloggers: Ensure SEO-friendly unique content
  • Researchers: Check research paper originality

Tips for Original Content

  • Use varied sentence structures — avoid repeating the same pattern
  • Replace repeated nouns with pronouns or synonyms
  • Combine short sentences to reduce repetition
  • Use our Grammar Checker to improve writing quality
  • Aim for lexical diversity above 60% for strong content

Frequently Asked Questions

Is this plagiarism checker free? ▼
Yes, 100% free. No signup, no word limits, no hidden charges. All features including comparison and word frequency are free forever.
Does this check against internet content? ▼
This tool checks for internal patterns, self-plagiarism, and text-to-text similarity. For checking against internet sources, your content will need to be submitted to Google Search Console or similar web crawlers.
Is my text stored or shared? ▼
No. All analysis happens entirely in your browser. Your text never leaves your device and is never sent to any server. Complete privacy guaranteed.
What is a good originality score? ▼
For blog content and articles, aim for 85%+. For academic writing, 90%+ is recommended. Below 70% usually indicates too much repetition or self-plagiarism that should be rewritten.
How does the Compare Two Texts feature work? ▼
It uses n-gram similarity matching — breaking both texts into phrases (3-5 words) and measuring how many phrases match. A 90%+ similarity score means the texts are nearly identical.

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