dejikenzai.com website review

16 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.6 s.

A phone's processor spends 5.0 s on main-thread work while loading, 949 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Your mobile performance score is 81. Pages that score under 90 lose visitors before the first paint.

About 134 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 300 ms faster on a phone.

The page has 1,863 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

8 third-party services load with your homepage (Google Tag Manager, Clarity and Shopify and others), adding 357 KiB and 335 ms of main-thread time.

7 long tasks block the main thread while loading, the longest for 151 ms. During a long task the page ignores taps.

3 images could be 47 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

7 files are served with short cache lifetimes, so returning visitors download them again (34 KiB).

About 31 KiB of CSS is downloaded but never applied on this page.

Polyfills for old browsers add 9 KiB JavaScript that modern phones do not need.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

The page becomes fully interactive after 8.0 s. Good is under 3.8 s.

Your largest element takes 4.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image.

The first text or image appears after 2.0 s on a phone. Good is under 1.8 s.

Visually, the page fills in at 3.6 s (Speed Index). Good is under 3.4 s.

2 images have no width and height attributes, so the layout jumps as each one loads.

Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.

By the Sustainable Web Design model, a visit to your homepage emits about 0.49 g of CO₂e: 58.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

1 image has no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 8 elements on the page fail this check, rated moderate by axe-core.

Page should contain a level-one heading: 1 element on the page fails this check, rated moderate by axe-core.

Alternative text of images should not be repeated as text: 2 elements on the page fail this check, rated minor by axe-core.

Headings skip levels (h2 → h5), which makes the page harder to scan with a screen reader.

No meta description, so Google writes its own snippet from whatever text it finds.

Your title is only 4 characters: “デジ建材”. Between 30 and 65 characters leaves room to say what you do and for whom.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

The homepage links to 95 pages on dejikenzai.com and 2 external pages.

Your Organization JSON-LD is missing logo, description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

https://dejikenzai.com/collections/sincol-kabegami and https://dejikenzai.com/collections/sincol-kabegami/BB all use the title “シンコール 壁紙 – デジ建材”. Search engines can't tell which page to show for a search, so each competes with the others.

https://dejikenzai.com/collections/all, https://dejikenzai.com/collections/yukazai, https://dejikenzai.com/collections/cushionfloor, https://dejikenzai.com/collections/toli-cf, https://dejikenzai.com/collections/%E3%82%B7%E3%83%B3%E3%82%B3%E3%83%BC%E3%83%AB and https://dejikenzai.com/collections/sincol-cf and 6 others have no meta description, so Google writes the search snippet from whatever text it finds.

Your homepage links to 2 pages by a URL that isn't their canonical one, for example https://dejikenzai.com/collections/%E3%82%B7%E3%83%B3%E3%82%B3%E3%83%BC%E3%83%AB, whose canonical is https://dejikenzai.com/collections/%e3%82%b7%e3%83%b3%e3%82%b3%e3%83%bc%e3%83%ab. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

https://dejikenzai.com/collections/all, https://dejikenzai.com/collections/yukazai, https://dejikenzai.com/collections/cushionfloor, https://dejikenzai.com/collections/toli-cf, https://dejikenzai.com/collections/%E3%82%B7%E3%83%B3%E3%82%B3%E3%83%BC%E3%83%AB and https://dejikenzai.com/collections/sincol-cf and 6 others have no <h1> headline, so visitors and search engines get no clear main topic.

https://dejikenzai.com/collections/yukazai, https://dejikenzai.com/collections/cushionfloor, https://dejikenzai.com/collections/toli-cf, https://dejikenzai.com/collections/%E3%82%B7%E3%83%B3%E3%82%B3%E3%83%BC%E3%83%AB, https://dejikenzai.com/collections/sincol-cf and https://dejikenzai.com/collections/sincol-cf-etype and 3 others have under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.

We fetched 15 pages linked from your homepage (of 45 found) and read each the way a search engine does.

2 images failed to load on a phone, for example https://dejikenzai.com/Liquid%20error%20(snippets/halo-cart-popup-1%20line%2040):%20invalid%20url%20input.

16 of 38 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

3 errors were logged to the browser console while the page loaded, for example “Failed to load resource: the server responded with a status of 404 ()”.

1 image is served at too low a resolution for sharp phone screens.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

We found no call-to-action buttons or links (such as “Book a demo” or “Get a quote”) anywhere on the homepage.

Social proof on the homepage: 60 testimonial or review blocks. Pairing it with named testimonials or customer logos makes it far more convincing.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

The homepage has only about 96 words of visible text; thin pages give Google and first-time buyers little to go on.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Microsoft Ads and Microsoft Clarity (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 16 cookies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 23 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.