Top Chrome Extensions for Plagiarism Checker
Plagiarism Checker Chrome extensions — 1.8M monthly searches · Rankings shifted 30× in 7 days · Top 3 locked — dominated by incumbents
What Developers Can Learn
Intelligence derived from tracked keywords across all Plagiarism Checker sub-keywords
Most Congested
This market is far from congested.
With only 22 active extensions and an open concentration ratio, the 'Plagiarism Checker' space remains largely untapped despite 1.8M Google searches.
Possible Openings
Adjacent SEO tools like 'Domain Authority Checker' (139.8K searches), 'Local SEO' (81K searches), and 'Sitemap Generator' (67K searches) offer substantial search demand with potentially lower competition than the primary keyword.
Positioning Patterns
Top extensions combine plagiarism detection with AI content analysis.
'Integrito' and 'Google Classroom plagiarism checker' lead with 4.7-4.8 ratings, while the generic 'Plagiarism Checker' lags at 3.0 stars despite 8K users—naming and feature specificity clearly impact user satisfaction.
Top Extensions Leaderboard
7-day ranking snapshot and appearances in Top 10
| # | Extension | Users | Rating | Appearances | Category | Momentum |
|---|---|---|---|---|---|---|
| 1 |  Plagiarism Checker | 8,000+ | ⭐ 3 | 7/7d | Seo | — stable |
| 2 |  Google Classroom plagiarism and AI checker | 10,000+ | ⭐ 4.7 | 7/7d | Seo | — stable |
| 3 |  Integrito — Analyze Text, Check Plagiarism&AI | 5,000+ | ⭐ 4.8 | 7/7d | Seo | — stable |
| 4 |  Quetext: AI Content Detector & Plagiarism Checker | 6,000+ | ⭐ 4.8 | 7/7d | Seo | — stable |
| 5 |  Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector | 3,000+ | ⭐ 4.4 | 7/7d | Seo | — stable |
| 6 |  Self Plagiarism Checker | 6 | ⭐ 5 | 7/7d | Seo | ↑ rising |
| 7 |  Grammarly: AI Writing Assistant and Grammar Checker App | 35,000,000+ | ⭐ 4.5 | 7/7d | Seo | ↓ dropping |
| 8 |  AI Content Detector - Copyleaks | 100,000+ | ⭐ 4.1 | 7/7d | Seo | ↓ dropping |
| 9 |  SEO Content Checker: Plagiarism & Readability | 8,000+ | ⭐ 3.4 | 7/7d | Seo | ↑ rising |
| 10 |  Chatgpt Plagiarism Checker - GPT-4, GPT-3 | 214 | ⭐ 0 | 7/7d | Seo | — stable |
Plagiarism Checker
8,000+ · ⭐ 3 · 7/7d
Google Classroom plagiarism and AI checker
10,000+ · ⭐ 4.7 · 7/7d
Integrito — Analyze Text, Check Plagiarism&AI
5,000+ · ⭐ 4.8 · 7/7d
Quetext: AI Content Detector & Plagiarism Checker
6,000+ · ⭐ 4.8 · 7/7d
Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector
3,000+ · ⭐ 4.4 · 7/7d
Self Plagiarism Checker
6 · ⭐ 5 · 7/7d
Grammarly: AI Writing Assistant and Grammar Checker App
35,000,000+ · ⭐ 4.5 · 7/7d
AI Content Detector - Copyleaks
100,000+ · ⭐ 4.1 · 7/7d
SEO Content Checker: Plagiarism & Readability
8,000+ · ⭐ 3.4 · 7/7d
Chatgpt Plagiarism Checker - GPT-4, GPT-3
214 · ⭐ 0 · 7/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-06-30 to 2026-07-06)
Data Methodology
- Data source:
- Chrome Web Store search results
- Update frequency:
- Weekly
- Monthly Search Demand:
- Estimated demand indicator sourced from third-party keyword data. Not CWS-internal figures.
Is your extension visible
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Track your extension's ranking for any Plagiarism Checker keyword, monitor weekly changes, and find the exact gaps between you and the top 10.