竹進オンライン｜茗渓学園など難関校合格を目指す双方向LIVEオンライン授業
茗渓学園をはじめとする茨城県内難関校の合格者を多数輩出する竹園進学教室のオンライン塾「オンライン竹進」。見る授業ではなく参加する授業で教室と同じ双方向LIVE授業で志望校合格をサポートします。.
Report generated on April 6, 2026
A note on how to read this
This report is ProdPoke's take on your site — think of it as a first impression from a very opinionated robot. We check real things (load times, broken links, accessibility patterns), but we also try to understand what your site is trying to do and whether the technical details support that goal. Some of our observations might not apply to your specific situation, and that's okay. We're getting sharper with every scan. If something feels off, tell us — it makes us better.
Key Insights for 竹進オンライン｜茗渓学園など難関校合格を目指す双方向LIVEオンライン授業
JavaScript error blocks trial enrollment form—prospective students cannot sign up for your free 3-week trial.
The trial enrollment form is your primary conversion funnel. A null reference error in addEventListener is preventing interactive features from working, directly blocking students and parents from taking the first step to experience your dual-instructor system and Loilo Note integration.
10.4MB page weight + 4.8s load time will cause mobile users to bounce before seeing your competitive school success stories.
Japanese students and parents researching exam prep services are predominantly on mobile networks. A 4.8-second load time significantly increases bounce rates—busy families will abandon your site before learning about Meikei Gakuen or Jouso Gakuin placements.
Three unoptimized images (757KB, 716KB, 702KB) + oversized CSS (2.9MB, 963KB) account for ~7MB of unnecessary file bloat.
Visual trust-building assets (instructor photos, dual-instructor system diagrams, course descriptions) are loading slowly. Parents evaluating your 45-year heritage and teaching methodology will see delayed page rendering, creating a poor first impression of your online service quality.
Seven interactive elements lack accessible labels; keyboard and screen reader users cannot navigate your enrollment flow.
Students with visual impairments or motor disabilities cannot understand trial enrollment buttons or navigate your class schedule. This violates WCAG standards and excludes potential students from competitive exam prep—a demographic that includes learners with diverse accessibility needs.
Ten focusable elements have no visible focus indicators, breaking keyboard navigation through your enrollment and scheduling forms.
Keyboard users tabbing through your trial form or class schedule cannot see where they are in the flow. This friction point may prevent accessibility-dependent users from completing enrollment, directly reducing your addressable market.
What ProdPoke understands about 竹進オンライン｜茗渓学園など難関校合格を目指す双方向LIVEオンライン授業
竹進オンライン is an online tutoring service that delivers live classes from 竹園進学教室 (Takesono Shingaku Kyoshitsu), a cram school in Tsukuba, Japan with a history since 1979. The service specializes in preparing students for entrance exams to competitive schools including Meikei Gakuen Middle School, Jouso Gakuin Middle School, and Tsuchiura Daiichi High School. Classes are delivered via Zoom using a proprietary teaching system that includes Loilo Note (a learning support app), a dual-instructor model where one teacher lectures while another monitors student comprehension and answers questions in real-time, and homework submission/feedback systems. The platform offers a free 3-week trial before enrollment, and students can access the same teaching methods and instructors as in-person students despite learning remotely.
Based on exploring 5 pages across the site
First Impression — How clear is your site?
This is an online tutoring service called 竹進オンライン (Takeshin Online) that offers "bi-directional LIVE online classes" to help students prepare for entrance exams at selective schools like Meikei Gakuen and Tokuura Ichiko. The site states it provides "the same classroom lessons as Takeshin Preparatory School online" using teaching support tools, with features including a "two-person instruction system" and a "report check system."
This score measures how quickly a first-time visitor understands what your site does — based on visible headings, navigation, and visual hierarchy alone.
Overall Score
Strong foundation.
Performance
29/100Page load could be faster: 4850ms
Your landing page takes 4.8 seconds to load. For busy parents and students researching competitive exam preparation services, slow load times increase bounce rates and reduce conversion to trial sign-ups. Japanese users on mobile networks will be particularly affected.
Found: 4850ms
High request count: 86 requests
Your site makes 86 HTTP requests. This excessive number of requests creates waterfalls and delays for prospective students trying to access course information, instructor profiles, and the trial enrollment form on slower networks.
Found: 86 requests
Heavy page: 10.4MB total transfer
Your landing page transfers 10.4MB total—more than typical for an educational service site. Students and parents on mobile networks (common in Japan) will experience slow load times, hurting conversion to trial sign-ups and enrollment.
Found: 10.4MB
Large asset: 757KB — https://takesin-online.com/wp/wp-content/themes/takesin-onli
A 757KB image asset is not optimized, taking 1.5 seconds to load. Since your site relies on visual testimonials, course descriptions, and instructor photos to build trust with exam-focused families, unoptimized images delay page rendering and hurt first impressions.
Found: 757KB
Large asset: 716KB — https://takesin-online.com/wp/wp-content/themes/takesin-onli
A 716KB image asset is not optimized, taking 2.2 seconds to load. Uncompressed images slow down access to key content like course schedules, sample lesson materials, and instructor credentials that influence enrollment decisions.
Found: 716KB
Large asset: 702KB — https://takesin-online.com/wp/wp-content/themes/takesin-onli
A 702KB image asset is not optimized, taking 2.2 seconds to load. Heavy image files delay rendering of visual content that showcases your dual-instructor system, Loilo Note integration, and competitive school success stories.
Found: 702KB
Large asset: 2908KB — https://takesin-online.com/wp/wp-content/themes/takesin-onli
A 2.9MB CSS file is significantly oversized, taking 1.7 seconds to load. This bloated stylesheet slows down initial page rendering for students and parents trying to quickly review your exam preparation offerings and trial enrollment options.
Found: 2908KB
Large asset: 963KB — https://takesin-online.com/wp/wp-content/themes/takesin-onli
A 963KB CSS file is not optimized. Split or minify this stylesheet to reduce blocking load time and improve the user experience for visitors accessing your tutoring service on slower mobile connections.
Found: 963KB
SEO
100/100Accessibility
77/1007 interactive element(s) without accessible names
Seven interactive elements lack accessible labels (buttons for trial enrollment, navigation, form controls, etc.). Screen reader users—including students with visual impairments—cannot understand what these buttons do, violating WCAG accessibility standards and excluding potential students.
Found: 7 missing: <a>, <a>, <a>, <a>, <a>
Focus indicators not visible on most elements
Keyboard users cannot see focus indicators on 10 focusable elements throughout the site. Students with motor impairments or those preferring keyboard navigation cannot tell where they are when tabbing through the enrollment form, class schedule, or other interactive features.
Found: 10/10 elements lack visible focus
Functional
100/100Technical Health
Cannot read properties of null (reading 'addEventListener')
A JavaScript error is preventing interactive features on your tutoring platform from working properly. This could affect the trial enrollment form, class scheduling interface, or other critical student onboarding elements that prospective students use to sign up for the free 3-week trial.
Compliance
100/100Key Metrics
Crawlability
Standards
Improvement Plan
Your site has a critical blocker preventing revenue: the JavaScript error in addEventListener is breaking your trial enrollment form, the cornerstone of your customer acquisition. This must be fixed immediately—likely a missing DOM element or async loading issue. Once fixed, prospective students can actually complete sign-ups.
Next, address the performance crisis. Your 10.4MB page weight and 4.8-second load time are unacceptable for a mobile-first Japanese market. Three unoptimized images (757KB, 716KB, 702KB) are low-hanging fruit: compress them to <200KB each using modern formats (WebP). Your two CSS files (2.9MB + 963KB) are dramatically oversized—audit for dead code, split stylesheets by page section, and minify. Target <4MB total page weight and <2.5s load time on 4G mobile networks. These optimizations will directly improve trial sign-up conversion rates.
Third, reduce HTTP request count from 86 to ~40 by bundling assets, lazy-loading below-fold images, and eliminating render-blocking resources. This addresses waterfall delays that slow down access to your competitive school success stories and instructor credentials.
Finally, fix accessibility to remove barriers: add ARIA labels and accessible names to all seven interactive elements (trial enrollment button, navigation, form controls), implement visible focus indicators on all 10 focusable elements, and test keyboard navigation end-to-end through the enrollment flow. This ensures students with disabilities can access your service.
Prioritize the JavaScript error and image compression first—these directly impact conversion. Performance and accessibility improvements follow, unlocking a broader student base and improving user experience for existing visitors.
Suggested priority order:
- Cannot read properties of null (reading 'addEventListener')
- Large asset: 757KB image
- Large asset: 716KB image
- Large asset: 702KB image
- Large asset: 2908KB CSS file
- Large asset: 963KB CSS file
- High request count: 86 requests
- Heavy page: 10.4MB total transfer
- 7 interactive element(s) without accessible names
- Focus indicators not visible on most elements
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What is ProdPoke?Automated analysis generated on April 6, 2026. Not professional advice. Contact us to modify or remove this report.