Catch overlooked SEO fundamentals
Review title, description, canonical, heading structure, image alt text, and other basics that are easy to miss.
Eliminate SEO blind spots with a Chrome extension
Analyze that one page on the spot
Get improvement recommendations in 30 seconds
AI informed by practical SEO consulting experience analyzes the page and produces concrete recommendations in about 30 seconds.
Start free. No paid plan is required for core checks.
30 secto actionable findings
10 areasreviewed in one panel
Japanese / English pagesSEO analysis in either language
Complete the page review inside one extension
Keep the checks, recommendations, and deliverables connected to the page you are viewing.
Analyze by keyword and produce improvements
Enter a target keyword and AI turns search intent, placement, and gaps into an improvement plan.
Export and deliver to clients
Export results as Excel, CSV, or HTML for client delivery and internal review.
Detailed SEO checks before publishing
It is not a generic score alone. Each result stays connected to the page element, risk, and improvement action.
On-page SEO
Review title, description, canonical, heading structure, image alt text, language settings, and indexability.
Structured data
Check whether the page purpose matches the JSON-LD type, required and recommended fields, breadcrumb markup and errors, and mismatches with visible page content.
Keyword analysis
Measure target keyword placement across title, meta, H1-H3, opening copy, body, and image alt text.
Competitor comparison
Compare your page with a competitor URL and use both pages as context for AI analysis.
Page speed and link checks
Measure page speed more easily and quickly than Chrome's built-in Lighthouse. Check internal and external links, cache settings, and low-value anchor text.
Tracking and CRO
Inspect analytics, tag manager, heatmap, and ad signals with conservative duplicate-detection logic.
Japanese and English pages
Analyze English-language sites in the Japanese UI or Japanese-language sites in the English UI. SEO analysis works in either language, regardless of the creator's native language.
URL normalization checks
Check HTTPS usage, www consistency, and trailing-slash normalization.
YMYL risk analysis
Assess whether the target keyword and page fall within health, finance, legal, or other high-impact topics, then recommend appropriate expert review and trust signals.
AI Overview zero-click risk
Estimate the risk of losing traffic to AI Overviews and briefly explain a strategy when the risk is high.
SERP analysis
Review the top 20 results for the target keyword and determine whether to compete or avoid the keyword.
Search journey analysis
Classify the target keyword into awareness, research, comparison, or action, then propose content and pathways that meet the user's search demand.
AI creates optimization recommendations for these items
Copy and paste the recommendations into your website to optimize each item.
Analyze pages protected by BASIC authentication before launch
You can analyze pre-release pages opened after BASIC authentication. Competitor analysis is unavailable on authentication-protected pages.
Export as an improvement brief
Export in Excel, CSV, or HTML format. Convert the HTML version to PDF from your browser's print dialog and deliver it directly to clients. To include AI analysis in the report, run AI analysis before selecting Export.
Try the actual AI analysis flow
This mock reproduces the extension interface without making API calls. Target keyword: “SEO”.
Signed in
AI analyses: 0 / 5
Basics
Basic SEO Score
86
/ 100 pt
This score checks only basic items such as structured data, meta information, headings, and speed. For a full SEO analysis for the target keyword, use “✦ AI Analysis” above.
Detected issues and improvements
Evaluation items and scoring (click for details)
Structured data warnings found (3)-6 / 30pt
Title is too long (over 35 chars)-3 / 15pt
Heading hierarchy skips or pyramid structure errors found (2)-5 / 25pt
No ARIA attribute issues found (basic check)10pt
Basic performance metrics are good20pt
Page Info
Page title (38 chars - over 35 chars)
SEO Quality Checker | Analyze One Page
Meta description (112 chars)
Analyze title, headings, canonical URLs, structured data, keywords, speed, and tracking in one Chrome extension.
Canonicalhttps://umarketing.co.jp/en/product/seo-quality-checker/
URL Canonicalization
✓ HTTPSHTTPS canonicalization OK
✓ canonicalDefined (matches the URL)
✓ Trailing /Canonicalization OK (URL format: trailing slash present)
✓ wwwCanonicalization OK (URL format: www absent)
Structured Data
△ 3 recommendations
SoftwareApplicationRecommended field “screenshot” is missing
SoftwareApplicationRecommended paid-plan offers are missing
OrganizationRecommended field “logo” should be reviewed
✓SoftwareApplicationSoftware application▼
✓FAQPageFAQ page▼
✓OrganizationOrganization▼
Frontend Diff Check
✓ Breadcrumbs: 4 items match
✓ FAQ: 10 items match
[Breadcrumbs]Visible breadcrumbs match BreadcrumbList JSON-LD.
[FAQ]Visible questions and answers match FAQPage JSON-LD.
Heading Structure / Accessibility
Actual heading structure
<H1> Analyze that one page on the spot
<H2> Get improvement recommendations in 30 seconds
<H4> AI analysis results
<H2> Use cases
<H3> Pre-launch check
✓ H1Exactly one H1 tag exists, which is appropriate.
⚠ H2 → H4Heading hierarchy skip: H4 appears after H2.
⚠ H2 → H3Structure error: H2 “Use cases” has only one direct child H3.
✓ ARIANo ARIA attribute issues were found (basic check).
Detailed heading improvements can be reviewed with “✦ AI Analysis” above. AI proposes an H1-H4 structure optimized for the target keyword.
AI SEO analysis
Analyzing the page...
- Reading page structure
- Evaluating keyword and search intent
- Generating recommendations
YMYL level
LowThis is an SEO support product page and does not fall into a high-risk YMYL category.
AI Overview zero-click risk
Medium 3/5Query type: Comprehensive know-how / research stage
Show concrete analysis examples instead of relying only on general SEO explanations.
SERP analysis: top 20 results
AI classified and evaluated the top 20 Google results for the target keyword “SEO”. The five leading examples are shown below.
8Media
5Companies
3Official / education
4Other
Competitive intensity: High. Five corporate or official domains rank in the top 20, so differentiation with real analysis results is essential.
| # | Title | Type | Threat |
|---|---|---|---|
| 1 | SEO fundamentals and practical methods | Media | High |
| 2 | Search optimization starter guide | Official | High |
| 3 | SEO analysis checklist | Media | Medium |
| 4 | How to improve on-page SEO | Company | High |
| 5 | SEO analysis tools compared | Media | Medium |
Source: Google search results. The real extension retrieves and evaluates up to 20 results.
Search journey
1
Aware2
Research3
Compare4
Act
Aware2
Research3
Compare4
Act
“SEO” has a strong informational intent. Show actual results and before-and-after improvements for the current research stage.
PersonaA website manager who wants to identify SEO issues quicklyResearch
Next actionTry the Free plan and analyze a page in chargeHigh
Suggested actions for each stage
Awareness: Explain the fundamental SEO items that are easy to overlook.
Research - current: Show actual analysis screens and before-and-after improvements.
Comparison: Clarify differences from manual ChatGPT analysis and other SEO tools.
Action: Place a Free-plan CTA immediately after the demo result.
Title evaluation86/100
Current title (56 characters)SEO Quality Checker | Analyze One Page on the Spot
The service and purpose are clear, but the time-to-value benefit can be stronger.
Recommended titleSEO Quality Checker | Get AI Recommendations in 30 Seconds
Meta description evaluation82/100
Current description (148 characters)Analyze the SEO quality of the page currently open in Chrome and receive actionable AI recommendations.
Add the target audience and the Free-plan benefit to strengthen the reason to click.
Recommended descriptionFor consultants, designers, and web managers. Analyze one page in Chrome and try five AI analyses per month for free.
Heading structure evaluation and recommended outline
The H1 is appropriate, but one H2 jumps directly to H4 and a section contains only one H3. The outline should be reorganized as follows.
Current heading structure
H1: Analyze that one page on the spot
H2: Get improvement recommendations in 30 seconds
H3: Catch overlooked SEO fundamentals
H4: Analysis output ⚠
Recommended H1-H4 structure
H1: Analyze that one page on the spot
H2: Get improvement recommendations in 30 seconds
H3: Catch overlooked SEO fundamentals
H3: Analyze by keyword and produce improvements
H2: Pricing plans
Structured markup details and AI recommendations
Current JSON-LD detected on the page:
Organization ✓
SoftwareApplication ✓
FAQPage ✓
FAQPageVisible Q&A matches JSON-LDOK
SoftwareApplicationMissing recommended screenshot fieldImprove
offersFree-plan price is defined; add paid-plan offersImprove
AI structured-data evaluationThe schema type matches the page purpose. Add screenshots and paid offers, while keeping FAQPage synchronized with visible content.
Improved JSON-LD code can be generated and pasted into the website.
{ "@type": "SoftwareApplication", "name": "SEO Quality Checker", "offers": [...] }Target-keyword placement
“SEO” appears naturally in the title, description, H1, H2 headings, opening copy, and body. Add it to one relevant image alt attribute.
Page-speed impact
TTFB 76 ms, FCP 948 ms, and LCP 1,132 ms are all good. Keep the hero video lazy-loaded and preserve the static poster.
User funnel analysis
The sequence from value proposition to live demo, pricing, FAQ, and Free-plan registration is clear. Add a contextual CTA after the detailed AI result to reduce return scrolling.
Content gaps
- A concrete before-and-after example of a rewritten title and heading structure
- A comparison explaining when to use this extension instead of ChatGPT
- A sample deliverable exported to Excel, CSV, or HTML
Technical SEO notes
- Keep canonical URLs consistent between Japanese and English routes
- Verify that FAQPage remains synchronized after FAQ edits
- Maintain noindex on staging and development hosts
Priority actions
- #1Show a title and heading before-and-after example next to the live AI result.High / medium effort
- #2Place the Free-plan CTA immediately after the detailed analysis.High / low effort
- #3Add SoftwareApplication screenshots and paid offers to JSON-LD.Medium / low effort
Keyword morphology and placement
Target keyword “SEO”
| Title | Meta | H1 | H2 | H3 | Opening | Body | Alt | Total |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 4 | 2 | 2 | 18 | 3 | 32 |
The exact keyword appears in the title, description, H1, and opening copy. Image alt text still has room for improvement.
Important terms extracted from the page
| # | Term | Score | Title | H1 | H2 | Body | Assessment |
|---|---|---|---|---|---|---|---|
| 1 | SEO | 86 | 1 | 1 | 4 | 18 | Strong |
| 2 | analysis | 54 | 1 | 1 | 3 | 12 | Natural |
| 3 | improvement | 41 | 0 | 0 | 2 | 9 | Add to H1/H2 |
| 4 | extension | 38 | 1 | 1 | 2 | 7 | Strong |
| 5 | AI | 35 | 0 | 0 | 4 | 11 | Clarify the title |
SEO and analysis are distributed across prominent page locations.
The value of AI recommendations is not explicit in the title.
Add “AI recommendations” to one H2 and a relevant image alt.
Two-page comparison
Your page86 pt
Competitor demo72 pt
| Comparison item | A | B | Difference | Assessment |
|---|---|---|---|---|
| Title | 18/20 | 16/20 | +2 | A |
| Description | 12/15 | 13/15 | -1 | B |
| H1 / H2 | 15/15 | 10/15 | +5 | A |
| Keyword placement | 14/15 | 13/15 | +1 | A |
| Structured data | 12/15 | 6/15 | +6 | A |
| Page speed | 8/10 | 9/10 | -1 | B |
| Links and technical | 7/10 | 5/10 | +2 | A |
Heading consistency and structured data are significantly stronger.
The competitor has a slightly stronger description and loading speed.
Improve the description while preserving the current heading and schema advantages.
Performance metrics
Quick lab measurements from the extension. Use Lighthouse for formal Core Web Vitals evaluation.
Link health
Tested30 / 74OK
Broken links0OK
Redirects2Review
Low-value anchors5Improve
Cache and language settings
Cache-Controlpublic, max-age=86400OK
ExpiresValid future dateOK
html langenOK
Estimated languageEnglishMatch
Tags and tracking
Marketing and CRO tracking monitor
| Category | Detected ID / event | Fires | Assessment |
|---|---|---|---|
| Google Analytics 4 | G-DEMO1234 / page_view | 1 | Normal |
| Google Tag Manager | GTM-DEMO123 | 1 | Normal |
| Ad conversion | AW-DEMO123 / remarketing | 1 | Normal |
| Heatmap | Microsoft Clarity | 1 | Normal |
| Consent signals | analytics_storage=granted | - | Detected |
Latest observed activity
page_view1 eventOK
scroll2 eventsOK
CTA clickNot detected yetWaiting
Duplicate firingNo confirmed duplicate eventOK
The monitor distinguishes multiple different events from confirmed duplicate sends of the same event.
Product updates
Only changes already released on the Chrome Web Store are listed here.
Initial Chrome Web Store release
- SEO Quality Checker was released publicly on the Chrome Web Store.
- Review titles, meta descriptions, headings, structured data, and other on-page SEO signals in one panel.
- Use the interface in Japanese or English and analyze pages written in either language.
Pricing plans
The paid plans include the same features. Plus, Pro, and Ultra differ only by monthly AI analysis limits. Usage resets at 00:00 JST on the first day of each month. If you join or change plans mid-month, usage already recorded in that calendar month counts toward the new plan limit, and unused analyses do not roll over.
Free
$0
Core SEO checks and 5 AI analyses per month.
- Basic SEO score
- Structured data checks
- Heading structure checks
- Keyword morphological analysis
- Tag and CRO checks
- Page speed analysis
- Two-page comparison
- SERP analysis
- 5 AI analyses per month
Plus
$1/ month
All paid features and 25 AI analyses per month.
- All paid-plan features
- SERP analysis
- Link health checks
- Two-page comparison
- CSV, Excel, and HTML exports
- JSON-LD generation
- AI Overview risk analysis
- 25 AI analyses per month
Pro
$5/ month
All paid features and 125 AI analyses per month. 5x Plus.
- All paid-plan features
- SERP analysis
- Link health checks
- Two-page comparison
- CSV, Excel, and HTML exports
- JSON-LD generation
- AI Overview risk analysis
- 125 AI analyses per month / 5x Plus
Ultra
$10/ month
All paid features and 500 AI analyses per month. 20x Plus.
- All paid-plan features
- SERP analysis
- Link health checks
- Two-page comparison
- CSV, Excel, and HTML exports
- JSON-LD generation
- AI Overview risk analysis
- 500 AI analyses per month / 20x Plus
Data and billing
Payments are processed by Stripe
The service is not designed to retain analyzed page body content long term. AI analysis inputs and generated results are not used to train our own AI models. Payments are processed by Stripe, and card details are not stored on our server.
Use cases
Pre-launch review
Review pages protected by Basic Authentication and catch canonical errors or mismatches between visible breadcrumbs and structured data before publishing.
Live client consultations
Open a competitor page during an online meeting and immediately explain its target keywords, headings, schema, and improvement opportunities.
Add SEO value to every website
Help web production teams raise the SEO quality of the websites they build.
What users say
See how SEO Quality Checker supports consulting, web production, and sales conversations.
SEO consultant
Create a page-wide optimization plan in less time
I used to analyze pages and generate recommendations with Gemini, but I was often frustrated by answers that optimized only one element. For example, a title recommendation could ignore the H2 and lower heading structure. Even when I explicitly asked for page-wide optimization, important context was sometimes missed and I had to start over. With this extension, I can review the title, H1, heading structure, structured data, canonical, and the rest of the open page together. It also catches technical inconsistencies that are difficult for an SEO consultant to notice, so I can prepare recommendations with greater confidence.
Freelance web designer
I can now build websites with SEO in mind
I am a freelance designer. I used to give ChatGPT the URL of a website I had built and ask it for ways to improve it. ChatGPT produced useful suggestions, but it did not check elements I had not explicitly mentioned in the prompt, so some issues went unnoticed. With this extension, I can get concrete improvement recommendations with a single click, which is very convenient.
Sales representative
Useful for an impromptu sales conversation
At my company, I am sometimes asked at short notice to join an online sales meeting with a client. Even when I have had no time to prepare, I can open the client’s website in front of them and use the extension to surface issues on the spot. That lets us align on the challenges together, and once we share the same understanding, the rest of the sales conversation proceeds more smoothly.
Development story
The extension began with a practical SEO need: analyze the one page in front of you, immediately and in detail.
-
Analyze the page I am viewing, right now
SEO work does not always require a full-site crawl. During online meetings, competitor reviews, and final checks before launch, the immediate need is often a detailed analysis of one specific page. We wanted a tool that supports decisions on the spot instead of making people wait for a large report.
-
Reduce blind spots, even for experienced practitioners
SEO checks extend beyond the title and H1 to canonical URLs, URL normalization, heading hierarchy, and inconsistencies between structured data and visible page content. We turned practical SEO review steps into a repeatable system so anyone can examine the same details, regardless of experience.
-
Improve the whole page, not one isolated element
When information is entered into generative AI one item at a time, recommendations can overlook how the page works as a whole and create rework. SEO Quality Checker analyzes titles, headings, structured data, keyword placement, and other signals together, then produces page-wide recommendations inside the extension.
-
Built in the field and improved continuously
Universal Marketing Inc. and Ullr Inc. co-developed the product from 20 years of practical SEO experience and challenges found in web production and live client consultations. We continue improving it around real working situations instead of treating launch as the finish line.
20 years of SEO experience, built into AI
Co-developed in Japan
SEO Quality Checker combines practical SEO expertise with product and software development. Universal Marketing Inc. and Ullr Inc. continue to improve the product together.
Universal Marketing Inc.
Product planning, UI, system development, and service operations
Official site
Support
Frequently asked questions
What can I use for free?
Core SEO checks and 5 AI analyses per month are available on the Free plan.
Do paid plans have different features?
No. Plus, Pro, and Ultra include the same paid features and differ only by monthly AI analysis limits.
When will I be charged?
Your first payment is charged on the day you subscribe, and future payments recur monthly from that date. Billing is not fixed to the first day of the month for every user. For example, if you subscribe on July 20, your next billing date is August 20.
Will I lose value if I subscribe mid-month or near month-end?
No. Each monthly billing period begins on your subscription date. You are not charged for a short period that ends at the end of the calendar month.
Is analyzed page content used for AI training?
AI analysis inputs and generated results are not used to train our own AI models. The service uses Google Gemini API.
When do AI analysis limits reset?
AI analysis usage resets at 00:00 JST on the first day of each month, independently of your billing date. If you join or change plans mid-month, analyses already used in that calendar month count toward the new plan limit, and you can use up to the new limit immediately. Unused analyses do not roll over.
How are plan changes billed?
Plan changes take effect immediately. Stripe calculates any prorated difference through the next billing date and normally applies the adjustment to the next invoice.
How do I stop a paid plan?
Open the account dashboard, choose Change plan, then select Change to Free on the next renewal date. Paid access continues until the current billing period ends, and no further renewal payment is charged.
Can I view receipts and billing history?
The billing portal provides payment history and receipts processed by Stripe. Card details are not stored on our server.
Can I delete my account?
Yes. Open Account settings in the dashboard and choose Delete account. This permanently deletes your SEO Quality Checker account and cannot be undone. If you delete a paid account immediately, its paid subscription ends immediately. This does not delete your Google account. Billing records that must be retained for legal and accounting purposes are kept separately without the deleted account profile.
Does it support teams?
Individual accounts are available now. Contact us to discuss team workflows or billing requirements.
Register for free and try AI analysis
Install the extension, open a page, and turn scattered SEO checks into one clear list of next actions.