Top Chrome Extensions for Plagiarism Checker
Plagiarism Checker Chrome extensions — 1.8M monthly searches · Rankings shifted 17× 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
Low competition: only 21 active extensions with an open concentration ratio (0.001).
The current leader has just 10,000 users, and no extension dominates the space.
Entry barriers are minimal compared to the 1.8M monthly Google searches for this keyword.
Possible Openings
Adjacent SEO keywords show lower competition with meaningful search volume: Domain Authority Checker (139.8K), Local SEO (81K), and Sitemap Generator (67K) are viable alternatives for developers seeking less crowded positioning.
Positioning Patterns
Top performers share specific traits: Google Classroom integration (4.7 rating) leads, while generic naming like 'Plagiarism Checker' scores only 3.0.
AI-powered features appear in 2 of 3 top extensions.
Average top-5 rating is 4.5, indicating quality expectations are high.
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 |  Self Plagiarism Checker | 7 | ⭐ 5 | 7/7d | Seo | — stable |
| 6 |  Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector | 3,000+ | ⭐ 4.4 | 7/7d | Seo | — stable |
| 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 | ↑ rising |
| 9 |  SEO Content Checker: Plagiarism & Readability | 8,000+ | ⭐ 3.4 | 7/7d | Seo | ↓ dropping |
| 10 |  Chatgpt Plagiarism Checker - GPT-4, GPT-3 | 196 | ⭐ 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
Self Plagiarism Checker
7 · ⭐ 5 · 7/7d
Polygraf AI Content Detector: Advanced Plagiarism & ChatGPT Detector
3,000+ · ⭐ 4.4 · 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
196 · ⭐ 0 · 7/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-07-14 to 2026-07-20)
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.