Top Chrome Extensions for Website Seo Checker
Website Seo Checker Chrome extensions — 36K monthly searches · Rankings shifted 69× in 7 days · Top 3 partially locked by Website SEO Checker, Website Ranking and SEO Checker by Semalt
What Developers Can Learn
Intelligence derived from tracked keywords across all Website Seo Checker sub-keywords
Most Congested
This is a fragmented space with only 22 extensions, but the dominant player commands 100K users while the #3 holds 30K.
Rating gap between top (4.8) and bottom competitors means quality differentiation is achievable.
Possible Openings
Consider Domain Authority Checker (139.8K searches) or Local Seo (81K searches) as adjacent opportunities with substantial volume but potentially fewer dedicated extensions competing.
Positioning Patterns
Top 3 extensions share descriptive naming conventions and strong ratings (4.6-4.8).
Serpstat and Semalt leverage brand recognition; generic-naming extensions like 'Website SEO Checker' still win on user base if ratings are high.
Top Extensions Leaderboard
7-day ranking snapshot and appearances in Top 10
| # | Extension | Users | Rating | Appearances | Category | Momentum |
|---|---|---|---|---|---|---|
| 1 |  Website SEO Checker | 100,000+ | ⭐ 4.6 | 7/7d | Seo | — stable |
| 2 |  Website Ranking and SEO Checker by Semalt | 10,000+ | ⭐ 4.8 | 7/7d | Seo | — stable |
| 3 |  Serpstat Website SEO Checker | 30,000+ | ⭐ 4.7 | 7/7d | Seo | ↑ rising |
| 4 |  SEO Checker Tool - Get Free SEO Audit Analysis | 10,000+ | ⭐ 4 | 7/7d | Seo | ↓ dropping |
| 5 |  Website SEO Checker | 6 | ⭐ 0 | 7/7d | Seo | — stable |
| 6 |  On Page SEO Checker | 3,000+ | ⭐ 5 | 7/7d | Seo | ↑ rising |
| 7 |  SiteAnalyzer SEO Tools: Free Meta & SEO Checker | 10,000+ | ⭐ 4.9 | 7/7d | Seo | — stable |
| 8 |  Smart Website SEO Checker - On-Page SEO Checker & Analyzer | 13 | ⭐ 0 | 7/7d | Seo | ↑ rising |
| 9 |  Similarweb - Website Traffic, AI Traffic & SEO Checker | 1,000,000+ | ⭐ 4.6 | 7/7d | Seo | ↑ rising |
| 10 |  Analysis SEO & Website Checker - PR-CY | 8,000+ | ⭐ 4.9 | 6/7d | Seo | ↓ dropping |
Website SEO Checker
100,000+ · ⭐ 4.6 · 7/7d
Website Ranking and SEO Checker by Semalt
10,000+ · ⭐ 4.8 · 7/7d
Serpstat Website SEO Checker
30,000+ · ⭐ 4.7 · 7/7d
SEO Checker Tool - Get Free SEO Audit Analysis
10,000+ · ⭐ 4 · 7/7d
Website SEO Checker
6 · ⭐ 0 · 7/7d
On Page SEO Checker
3,000+ · ⭐ 5 · 7/7d
SiteAnalyzer SEO Tools: Free Meta & SEO Checker
10,000+ · ⭐ 4.9 · 7/7d
Smart Website SEO Checker - On-Page SEO Checker & Analyzer
13 · ⭐ 0 · 7/7d
Similarweb - Website Traffic, AI Traffic & SEO Checker
1,000,000+ · ⭐ 4.6 · 7/7d
Analysis SEO & Website Checker - PR-CY
8,000+ · ⭐ 4.9 · 6/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-07-14 to 2026-07-20)
✦ 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.