Top Chrome Extensions for Website Seo Checker
Website Seo Checker Chrome extensions — 36K monthly searches · Rankings shifted 43× in 7 days · Top 3 locked — dominated by incumbents
What Developers Can Learn
Intelligence derived from tracked keywords across all Website Seo Checker sub-keywords
Most Congested
The dominant player holds 200K users versus 10K for the runner-up—a 20x gap signaling strong incumbent advantage.
The top 3 extensions all use the exact keyword phrase in their names, making brand differentiation and feature specialization critical for new entrants.
Possible Openings
Adjacent keywords like Local SEO (81K monthly searches) and Domain Authority Checker (140K) carry substantial volume yet have no dedicated extension ranking here.
On Page SEO Checker is rising fast, suggesting demand for task-specific audit tools beyond broad site checkers.
Positioning Patterns
The top 3 average 4.47 stars.
Semalt leads in rating (4.8) despite lowest user count, while the top player (4.6) dominates by installs.
All top performers use descriptive, keyword-heavy titles.
No extension in the top 3 has fewer than 10K users.
Top Extensions Leaderboard
7-day ranking snapshot and appearances in Top 10
| # | Extension | Users | Rating | Appearances | Category | Momentum |
|---|---|---|---|---|---|---|
| 1 |  Website SEO Checker | 200,000+ | ⭐ 4.6 | 7/7d | Seo | — stable |
| 2 |  Website Ranking and SEO Checker by Semalt | 10,000+ | ⭐ 4.8 | 7/7d | Seo | — stable |
| 3 |  SEO Checker Tool - Get Free SEO Audit Analysis | 10,000+ | ⭐ 4 | 7/7d | Seo | — stable |
| 4 |  Similarweb - Website Traffic, AI Traffic & SEO Checker | 1,000,000+ | ⭐ 4.7 | 7/7d | Seo | ↑ rising |
| 5 |  Serpstat Website SEO Checker | 30,000+ | ⭐ 4.7 | 7/7d | Seo | ↓ dropping |
| 6 |  On Page SEO Checker | 1,000+ | ⭐ 5 | 7/7d | Seo | ↑ rising |
| 7 |  SEO Checker | 7,000+ | ⭐ 4.7 | 7/7d | Seo | — stable |
| 8 |  Smart Website SEO Checker - On-Page SEO Checker & Analyzer | 9 | ⭐ 0 | 7/7d | Seo | ↑ rising |
| 9 |  SEO Analyzer: One-Click Website Audit | 1,000+ | ⭐ 5 | 7/7d | Seo | ↑ rising |
| 10 |  Website SEO Checker | 5 | ⭐ 0 | 7/7d | Seo | ↑ rising |
Website SEO Checker
200,000+ · ⭐ 4.6 · 7/7d
Website Ranking and SEO Checker by Semalt
10,000+ · ⭐ 4.8 · 7/7d
SEO Checker Tool - Get Free SEO Audit Analysis
10,000+ · ⭐ 4 · 7/7d
Similarweb - Website Traffic, AI Traffic & SEO Checker
1,000,000+ · ⭐ 4.7 · 7/7d
Serpstat Website SEO Checker
30,000+ · ⭐ 4.7 · 7/7d
On Page SEO Checker
1,000+ · ⭐ 5 · 7/7d
SEO Checker
7,000+ · ⭐ 4.7 · 7/7d
Smart Website SEO Checker - On-Page SEO Checker & Analyzer
9 · ⭐ 0 · 7/7d
SEO Analyzer: One-Click Website Audit
1,000+ · ⭐ 5 · 7/7d
Website SEO Checker
5 · ⭐ 0 · 7/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-05-12 to 2026-05-18)
✦ Entered Top 10 This Week
↓ Dropped Out of Top 10
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
in Website Seo Checker extension market?
Track your extension's ranking for any Website Seo Checker keyword, monitor weekly changes, and find the exact gaps between you and the top 10.