Free Competitor SEO Analysis Tool
Compare your SEO with competitors side by side — from content and meta tags to technical SEO.
Check where you stand against the competition and identify improvement priorities from category-level differences.
Compare up to 6 sites — available on Basic plan and above
Last updated: 2026-05-19
Competitor SEO analysis compares the SEO implementation of your site and competing sites — structured data, meta tags, technical SEO, and content — on a page-by-page basis under the same scoring criteria, identifying exactly what to improve to outrank them. Unlike the domain-wide analysis of Ahrefs and Semrush, visualizing page-level implementation gaps lets you move from diagnosis to fix actions immediately.
What is Competitor SEO Analysis?
An analysis method that diagnoses the SEO implementation status of your site and competing sites side by side under the same criteria, identifying on a per-page basis which category — structured data, basic SEO, content, or technical SEO — is creating the gap.
- Number of simultaneous comparisons
- Up to 6 sites (Pro) / Up to 3 sites (Basic)
- Comparison axes
- 4 categories of structured data, basic SEO, content, and technical SEO × 45+ items
- Analysis granularity
- Per-page (not entire domain)
- Output format
- Score table / per-category diffs / auto-generated fix code / PDF report (Pro)
- Time required
- Full multi-site diagnosis completes in about 30 to 60 seconds after entering URLs
- Re-run
- Any number of times, any time (diff tracking enabled)
Best for: Web production companies, freelancers, and in-house SEO personnel who want to understand specifically what to improve in order to rank higher than competitors.
Domain-level vs Page-level Analysis
Domain-level analysis (Ahrefs / Semrush, etc.)
Analyzes domain-wide indicators such as backlinks, estimated traffic, and keyword portfolios. Effective for market research and content strategy.
Page-level analysis (CodeQuest.work SEO)
Compares structured data, meta tags, and technical SEO implementation on a per-page basis. Surfaces concrete fix tasks ready for implementation.
Why Competitor Analysis Is Essential for SEO
SEO is relative. Even if your site scores well, competitors scoring higher means they rank above you. Understanding competitor SEO scores makes it clear what to improve to surpass them.
Our tool runs SEO diagnostics on up to 6 sites simultaneously, comparing across 4 categories and 45+ items. Perfect for sales proposals and maintenance reports.
36.7% of URLs on the first page of Google search results implement structured data.
— Backlinko "We Analyzed 11.8 Million Google Search Results"（source）
Sites that focus on on-page improvements (meta tags, structured data, internal links) see an average organic traffic increase of 20%+ within 12 months.
— Ahrefs "How Long Does SEO Take"（source）
Google states in its official guide that optimizing for generative AI search is optimizing for search overall — in other words, SEO itself.
— Google Search Central "AI features and your website"（source）
What Competitor Analysis Reveals
Quantify the gap with competitors and identify the most impactful improvements.
SEO Score Comparison
Compare 100-point SEO scores side by side. Get a bird's-eye view of overall SEO performance against competitors.
Category Analysis
Compare across 4 categories: structured data, basic SEO, content, and technical SEO. See weaknesses at a glance.
Domain Power Comparison
Compare domain authority side by side. See where your domain's trust level stands in your industry.
Priority Identification
Find items where competitors score high and you score low. Focus on the most effective improvements first.
3 Steps to Extract Improvement Tasks from Competitor SEO Analysis
With the tool, a full multi-site diagnosis completes in 30 to 60 seconds, and improvement tasks become clear via the flow below.
- 1
Identify the top 3-6 competitors for your target keyword
Search Google for your target keyword and pick 3-6 URLs from the top results in your industry and at a similar scale. Exclude ad slots and aggregator sites (Yelp, etc.).
- 2
Visualize score gaps across 4 categories
Compare scores side-by-side across structured data, basic SEO, content, and technical SEO. Identify categories where competitors score high and you score low. Categories with a gap of 10+ points are top-priority candidates.
- 3
Apply the auto-generated fix code to ship the change
For unimplemented items, the diagnostic result automatically generates recommended HTML/JSON-LD code. Structured data is recommended as the first improvement — low implementation cost, high impact.
How Competitor SEO Tools Approach the Problem
Domain-level analysis tools and page-level analysis tools provide different information for different purposes. CodeQuest.work SEO is designed as a complement to Ahrefs/Semrush, not a replacement.
| Comparison items | CodeQuest.work SEO (page-level comparison) | Ahrefs / Semrush (domain-level analysis) |
|---|---|---|
| Analysis granularity | Per-page implementation diagnosis | Domain-wide backlinks and traffic estimates |
| Comparison checkpoints | 45+ items (structured data, meta tags, technical SEO) | Backlink count, DR, estimated traffic, keywords |
| Sites in parallel | Up to 6 (Pro) | 2-5 (plan-dependent) |
| Auto-generated fix code | Yes (outputs HTML/JSON-LD automatically) | No (issue list only) |
| Primary use case | Implementation fixes, sales pitches, maintenance reports | Market research, content strategy |
| Entry price | ¥2,980/mo (Basic — 3 sites compared) | $129/mo (Ahrefs Lite) |
Use Ahrefs/Semrush for domain-wide market research, and CodeQuest.work SEO for page-implementation fix tasks. For backlink databases and rank tracking, continue using Ahrefs/Semrush in parallel.
Examples of Actual Diffs You'll See
When you run a real comparison, the output is this specific.
| Category | Competitor A | Your site |
|---|---|---|
| Structured data | Article + FAQPage + BreadcrumbList implemented | WebPage only |
| Meta tags | OGP + Twitter Card + hreflang complete | OGP only |
| Content | 45 internal links, h1-h4 heading hierarchy | 12 internal links, h1-h2 only |
| Technical SEO (LCP) | 1.8s (good) | 3.2s (needs improvement) |
Who Is This Tool For?
Built for people who implement SEO fixes on the front line. For market analysis and content strategy, Ahrefs/Semrush are better fits.
Best for
- ▸Freelance web developers (for client pitches and maintenance reports)
- ▸In-house SEO at SMBs (improving owned sites)
- ▸Agency maintenance teams (recurring checks across multiple client sites)
- ▸Junior SEO consultants (learning implementation-level diagnostics)
Not ideal for
- ×Enterprise sites with 1M+ monthly PVs needing large-scale crawl
- ×Backlink analysis or rank tracking as the primary use case (use Ahrefs/Semrush)
Real-World Use Cases
Client pitch materials
Before pitching new business, compare the SEO scores of the prospect's site and 3-6 competitor sites. Visualize the "gap between current state and competitors" in numbers as evidence for your improvement proposal.
Output: Score comparison table + per-category diffs + PDF report (Pro)
Monthly maintenance reports
Run monthly diagnostics for maintenance contract clients and continuously track diffs against competitors. Visualize the impact of your implementation work over time.
Output: Monthly score trends + before/after diffs + competitor change report
Pre-launch competitor check
Before publishing a new article or LP, compare it side-by-side with the top 3-6 competing pages for your target keyword. Catch implementation gaps before going live.
Output: Checklist-style diff summary + ready-to-deploy fix code
Pricing
Competitor comparison is available on Basic and above. At about ¥2,980/mo, you can compare up to 3 sites simultaneously — roughly one-quarter the price of Ahrefs Lite ($129/mo).
3 checks/month with registration
For weekly site improvers
For serious SEO analysis
For large sites & agencies
All plans in JPY, tax included. First 3 months 50% OFF campaign is currently running (code: X3WZHYEC).
Recommended next steps
Companion tools to turn this result into your next action.
Compare SEO scores with competitors
Just enter URLs to visualize the gap with competitors. Improvement priorities become clear.
About the author
Masakazu Imai(今井政和)
Executive Director / Frontend Engineer
20+ years in web development. Provides SEO, GA4, and WordPress development for freelancers and agencies. Developer of CodeQuest.work SEO. Author of "Sanpou-yoshi: Modern Web Strategy Learned from Edo Merchants" (Kindle).
Credentials
- Lancers Certified Outsourcing Director
- Samurai Engineer School Instructor
- MENTA Mentor