koreaspacedata.com website review

30 images could be 33.3 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 1.9 s faster on a phone.

About 525 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.6 s faster on a phone.

4 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.4 s.

15 files are served with short cache lifetimes, so returning visitors download them again (8.3 MB).

Your mobile performance score is 60. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (Google Tag Manager, Facebook and smlog.co.kr and others), adding 1.0 MB and 716 ms of main-thread time.

Google Tag Manager costs a phone 454 ms of main-thread work and 557 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

About 61 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 300 ms faster on a phone.

A phone's processor spends 3.2 s on main-thread work while loading, 1.3 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Polyfills for old browsers add 98 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 200 ms faster on a phone.

8 long tasks block the main thread while loading, the longest for 193 ms. During a long task the page ignores taps.

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

Your largest element takes 23.3 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “사무실 중개 및 인테리어”.

The page becomes fully interactive after 24.1 s. Good is under 3.8 s.

Visually, the page fills in at 6.2 s (Speed Index). Good is under 3.4 s.

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 116 ms to 227 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Scripts block taps and scrolling for 373 ms in total while the page loads. Good is under 200 ms.

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' largest content (lcp) went from 2.4 s to 1.7 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 44.8 MB in 131 requests on a phone: images 35.0 MB (33), media 7.8 MB (3) and scripts 1.5 MB (41). Under 2 MB keeps phones on slow connections fast.

14 images weigh 25.5 MB together. On a phone connection a single image that size takes seconds.

24 images are downloaded at several times the size a phone draws them, for example image at 1,920 px wide, shown at 210 px. Resized copies would save about 17.7 MB.

26 images (29.2 MB) are JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

By the Sustainable Web Design model, a visit to your homepage emits about 12.70 g of CO₂e: 1524.4 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

16 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

Scrollable region must have keyboard access: 1 element on the page fails this check, rated serious by axe-core.

All page content should be contained by landmarks: 2 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.

Headings skip levels (h2 → h4), which makes the page harder to scan with a screen reader.

There is no <h1>, so neither visitors nor Google get a clear main headline.

Your title is only 19 characters: “클리니어 | 올인원 공간관리 서비스”. Between 30 and 65 characters leaves room to say what you do and for whom.

Your meta description is only 56 characters: “사무실 청소, 건물관리, 사무실간식까지. 클리니어가 공간에 필요한 모든 서비스를 한 번에 제공합니다.”. 70 to 160 characters is enough to sell the click.

The homepage links to 55 pages on koreaspacedata.com and 11 external pages.

https://www.thecleanier.com/estimates, https://www.thecleanier.com/brand-with and https://www.thecleanier.com/estimates/promotions/aircon have no <h1> headline, so visitors and search engines get no clear main topic.

https://www.thecleanier.com/brand-cleanier, https://www.thecleanier.com/brand-building, https://www.thecleanier.com/brand-snack, https://www.thecleanier.com/service-cleanier, https://www.thecleanier.com/service-office and https://www.thecleanier.com/service-chongmoo and 9 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.

https://www.thecleanier.com/brand-snack, https://www.thecleanier.com/service-snack, https://www.thecleanier.com/service-spationpro, https://www.thecleanier.com/company and https://www.thecleanier.com/blog took over 3 s to send their HTML from our server.

We fetched 15 pages linked from your homepage (of 19 found) and read each the way a search engine does.

2 errors were logged to the browser console while the page loaded, for example “Refused to apply style from 'https://unpkg.com/@phosphor-icons/[email protected]/src/index.js' because its MIME type ('text/jav…”.

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.

The homepage has only about 59 words of visible text; thin pages give Google and first-time buyers little to go on.

There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

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 and Meta Pixel (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, 1 of them by other companies (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.