Top Chrome Extensions for Website Seo Checker
Website Seo Checker Chrome extensions — 36K monthly searches · Rankings shifted 72× 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 'Website Seo Checker' market shows an open structure with a 0.102 concentration ratio, yet the leading extension commands 100K users versus the second-place's 30K.
New entrants must target underserved angles since direct competition with established players will face significant user-base hurdles.
Possible Openings
Domain Authority Checker (139.8K monthly Google searches) and Local Seo (81K monthly Google searches) offer high-volume adjacent opportunities with fewer extension options.
These keywords serve specialized needs that the current top extensions do not address, potentially offering lower-competition entry points.
Positioning Patterns
The top 3 extensions maintain exceptional ratings (4.6-4.8 stars) and use keyword-rich, descriptive names.
The leader (100K users) lacks deep competition only at the top tier, but mid-tier players (10K-30K users) show that niche specialization or brand partnerships (Serpstat, Semalt) can capture meaningful market share.
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 |  Serpstat Website SEO Checker | 30,000+ | ⭐ 4.7 | 7/7d | Seo | — stable |
| 3 |  Website Ranking and SEO Checker by Semalt | 10,000+ | ⭐ 4.8 | 7/7d | Seo | — stable |
| 4 |  Similarweb - Website Traffic, AI Traffic & SEO Checker | 1,000,000+ | ⭐ 4.7 | 7/7d | Seo | ↓ dropping |
| 5 |  SEO Checker Tool - Get Free SEO Audit Analysis | 10,000+ | ⭐ 4 | 7/7d | Seo | ↑ rising |
| 6 |  SEO Analysis & Website Review by WooRank | 200,000+ | ⭐ 3.9 | 7/7d | Seo | ↓ dropping |
| 7 |  SEO Checker | 7,000+ | ⭐ 4.7 | 7/7d | Seo | ↑ rising |
| 8 |  Smart Website SEO Checker - On-Page SEO Checker & Analyzer | 11 | ⭐ 0 | 7/7d | Seo | ↑ rising |
| 9 |  SEO Analyzer: One-Click Website Audit | 1,000+ | ⭐ 5 | 7/7d | Seo | ↑ rising |
| 10 |  SiteAnalyzer SEO Tools: Free Meta & SEO Checker | 10,000+ | ⭐ 4.9 | 7/7d | Seo | — stable |
Website SEO Checker
100,000+ · ⭐ 4.6 · 7/7d
Serpstat Website SEO Checker
30,000+ · ⭐ 4.7 · 7/7d
Website Ranking and SEO Checker by Semalt
10,000+ · ⭐ 4.8 · 7/7d
Similarweb - Website Traffic, AI Traffic & SEO Checker
1,000,000+ · ⭐ 4.7 · 7/7d
SEO Checker Tool - Get Free SEO Audit Analysis
10,000+ · ⭐ 4 · 7/7d
SEO Analysis & Website Review by WooRank
200,000+ · ⭐ 3.9 · 7/7d
SEO Checker
7,000+ · ⭐ 4.7 · 7/7d
Smart Website SEO Checker - On-Page SEO Checker & Analyzer
11 · ⭐ 0 · 7/7d
SEO Analyzer: One-Click Website Audit
1,000+ · ⭐ 5 · 7/7d
SiteAnalyzer SEO Tools: Free Meta & SEO Checker
10,000+ · ⭐ 4.9 · 7/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-03-31 to 2026-04-06)
✦ 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.