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.

Add to Chrome View demo View pricing

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.

01

Catch overlooked SEO fundamentals

Review title, description, canonical, heading structure, image alt text, and other basics that are easy to miss.

02

Analyze by keyword and produce improvements

Enter a target keyword and AI turns search intent, placement, and gaps into an improvement plan.

03

Export and deliver to clients

Export results as Excel, CSV, or HTML for client delivery and internal review.

Detailed SEO checks before publishing

The same 34 items shown in the full plan comparison are explained here across five matching categories. Each result stays connected to the page element, risk, and improvement action.

Core SEO checks

01

Basic SEO score (100-point scale)

Score core items such as metadata, structured data, headings, and page speed on a 100-point scale, with the reasons for deductions.

02

Page title, meta description, and canonical

Review whether the page title, meta description, and canonical are present and whether their length and values are appropriate.

03

URL canonicalization

Check whether HTTPS, canonical URLs, trailing slashes, and www usage consistently resolve to the intended URL format.

04

Structured data errors and recommendations

Detect JSON-LD types, required and recommended fields, and syntax or content issues that need improvement.

05

Visible breadcrumb and FAQ consistency

Compare BreadcrumbList and FAQPage markup with the breadcrumbs and FAQ content that users can actually see on the page.

06

H1-H4 heading structure and basic ARIA checks

Review H1 counts, H1-H4 hierarchy gaps and structure, together with a basic check of ARIA attributes.

Keywords and competitors

07

Keyword morphology and placement score

Break down the target keyword and evaluate its occurrences and placement across title, meta, H1-H3, opening copy, body, and image alt text.

08

Two-page competitor comparison

Compare your page and a competitor page for the same target keyword and analyze the differences between both pages.

09

Top-20 SERP analysis

Review the top 20 search results for the target keyword and organize the competitive context needed for an entry decision.

Technical SEO and CRO

10

TTFB, FCP, and LCP lab measurements

Measure TTFB, FCP, and LCP in the extension to review the page's basic loading-performance condition.

11

Internal and external link health

Review internal and external link status and identify low-value anchor text that does not clearly describe its destination.

12

Cache-Control and Expires checks

Read Cache-Control and Expires headers to assess browser-cache validity and expiration settings.

13

html lang and estimated language checks

Compare the html lang setting with the primary language estimated from the visible page text.

14

GA4, GTM, heatmap, and ad-tag monitoring

Detect GA4, GTM, heatmap, and ad-tag traffic and conservatively review possible duplicate firing.

15

Analysis of pages protected by Basic Authentication

Analyze the page currently opened behind Basic Authentication before launch; competitor analysis is excluded on protected pages.

16

SEO analysis of Japanese and English pages

Analyze Japanese and English pages while preserving the page language, regardless of the selected interface language.

AI SEO analysis

17AI analysis

Full AI SEO analysis

Review core checks, keywords, structured data, and competitor context together, then organize page-wide improvements by priority.

18AI analysis

YMYL assessment

Assess whether the keyword and page concern health, finance, legal, or another high-impact topic and recommend suitable expert review and trust signals.

19AI analysis

AI Overview zero-click risk

Estimate the risk of losing traffic to AI Overviews and explain an appropriate strategy when the risk is high.

20AI analysis

Search journey and intent

Classify the keyword into awareness, research, comparison, or action and propose content and pathways that meet the search demand.

21AI analysis

Recommended H1-H4 heading structure

Review the current headings and propose an H1-H4 structure aligned with the target keyword and search intent.

22AI analysis

Structured-data recommendations and JSON-LD generation

Recommend structured data suited to the page and generate implementation-ready JSON-LD.

23AI analysis

Target-keyword placement review

Evaluate target-keyword placement from a page-wide optimization perspective and explain excesses, gaps, and correction priorities.

24AI analysis

Page-speed impact review

Explain how lab measurements such as TTFB, FCP, and LCP may affect SEO and user experience.

25AI analysis

User journey and funnel review

Review on-page pathways from awareness through action and identify likely abandonment or conversion issues.

26AI analysis

Missing-content suggestions

Use search intent and competitor context to suggest missing explanations, headings, and trust-building elements.

27AI analysis

Technical SEO cautions

Organize implementation cautions involving canonical URLs, headings, structured data, language settings, and other technical SEO elements.

28AI analysis

Prioritized improvement actions

Rank detected issues by importance and ease of implementation so the first changes are clear.

Exports and usability

29

CSV export

Save core and completed AI analysis results as CSV for use in spreadsheets and other workflows.

30

Excel export

Save an organized Excel report for client delivery or internal review.

31

HTML report export

Save an HTML report and convert it to PDF through the browser print dialog when needed.

32

Diagnostic JSON export

Save diagnostic information as JSON for reproducibility checks and detailed context sharing.

33

Japanese and English interface

Switch the extension interface between Japanese and English while keeping analyzed page content in its original language.

34

Restore the most recent analysis result

Reopen the most recently saved analysis result after returning to the page.

AI SEO analysis turns findings into implementation-ready recommendations

It organizes headings, structured data, target-keyword placement, missing content, and priorities into concrete recommendations you can use in implementation.

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.

Three stylized files representing improvement briefs exported in Excel, CSV, and HTML formats
Excel CSV HTML

Try the actual AI analysis flow

This mock reproduces the extension interface without making API calls. Target keyword: “SEO”.

https://app.umarketing.co.jp/en/

AI SEO analysis

Analyzing the page...
  1. Reading page structure
  2. Evaluating keyword and search intent
  3. Generating recommendations

Product updates

Only changes already released on the Chrome Web Store are listed here.

v0.6.20

Improved keyword-analysis stability and account usage display

  • Moved keyword morphology processing to a background worker and limited processing and display volume to keep Chrome responsive on long pages.
  • Updated account settings to show both remaining AI analyses and the monthly plan limit.
  • Added a direct link from the extension to the feature-request and feedback form.
View all product updates

Pricing plans

The Free plan includes core SEO checks and 5 AI analyses per month. Plus, Pro, and Ultra unlock the same paid features and 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
Get started free

Plus

$1/ month

All paid features and 25 AI analyses per month.

  • All Free-plan features, including the Basic SEO score
  • Link health checks
  • CSV, Excel, and HTML exports
  • JSON-LD generation
  • AI Overview risk analysis
  • 25 AI analyses per month
Choose plan
Most popular

Pro

$5/ month

All paid features and 125 AI analyses per month. 5x Plus.

  • All Free-plan features, including the Basic SEO score
  • Link health checks
  • CSV, Excel, and HTML exports
  • JSON-LD generation
  • AI Overview risk analysis
  • 125 AI analyses per month / 5x Plus
Choose plan

Ultra

$10/ month

All paid features and 500 AI analyses per month. 20x Plus.

  • All Free-plan features, including the Basic SEO score
  • Link health checks
  • CSV, Excel, and HTML exports
  • JSON-LD generation
  • AI Overview risk analysis
  • 500 AI analyses per month / 20x Plus
Choose plan
Compare pricing plans
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

Isometric illustration of a developer checking SEO issues on a BASIC-authenticated page before launch

Pre-launch review

Review pages protected by Basic Authentication and catch canonical errors or mismatches between visible breadcrumbs and structured data before publishing.

Isometric illustration of an SEO consultant analyzing a web page during an online client meeting

Live client consultations

Open a competitor page during an online meeting and immediately explain its target keywords, headings, schema, and improvement opportunities.

Isometric illustration of a web production team improving a website's SEO quality before delivery

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.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

Read the development story
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.

Universal Marketing Inc.

Product planning, UI, system development, and service operations

Official site
Ullr Inc.

Ullr Inc.

SEO expertise and co-development of the analysis design

Official site
Support

Frequently asked questions

What can I use for free?

The Free plan includes core SEO checks, competitor and SERP analysis, and 5 AI analyses per month. Paid plans add link health checks, CSV, Excel, and HTML exports, JSON-LD generation, and AI Overview risk analysis.

Do paid plans have different features?

No. Plus, Pro, and Ultra include the same paid features and differ only by monthly AI analysis limits.

Is there a free trial?

There is no separate time-limited trial. The Free plan lets you use core SEO checks and try up to 5 AI analyses each month without entering payment details.

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.

View all questions and contact support

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.

Add to Chrome Open dashboard
SEO Quality Checker