topband.com website review

17 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.2 s.

Your mobile performance score is 43 (desktop: 54). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

13 images could be 1.0 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

About 169 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 750 ms faster on a phone.

A phone's processor spends 2.2 s on main-thread work while loading, 885 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

ihaizhu.com costs a phone 0 ms of main-thread work and 768 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.

4 third-party services load with your homepage (Google Tag Manager, Hotjar and Google Analytics and others), adding 1,012 KiB and 268 ms of main-thread time.

9 long tasks block the main thread while loading, the longest for 172 ms. During a long task the page ignores taps.

1 file is served with short cache lifetimes, so returning visitors download them again (7 KiB).

About 91 KiB of CSS is downloaded but never applied on this page.

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.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Real visitors wait 13.7 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 8.7 s (75th percentile). Good is under 1.8 s.

Real visitors wait 3.9 s for your server to start answering (75th percentile). Good is under 800 ms.

Your largest element takes 11.3 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “topband”. Most of its time is resource load delay (8.3 s).

Visually, the page fills in at 17.8 s (Speed Index). Good is under 3.4 s.

The first text or image appears after 4.6 s on a phone. Good is under 1.8 s.

The page becomes fully interactive after 11.6 s. Good is under 3.8 s.

For real visitors the layout shifts by 0.25 (75th percentile). Good is under 0.1.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 8.9 s to 13.3 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

The layout shifts by 0.219 while loading, so content jumps under the reader's thumb. Good is under 0.1.

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

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 112 ms to 118 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

mask_tb.png weighs 599 KiB. On a phone connection a single image that size takes seconds.

Your homepage downloads 3.0 MB in 124 requests on a phone: images 2.0 MB (46), scripts 684 KiB (46) and HTML 131 KiB (1). Under 2 MB keeps phones on slow connections fast.

12 images (1.6 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.

7 images further down the page (969 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 0.84 g of CO₂e: 100.9 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

2 buttons have no accessible name, so screen readers announce just “button”.

48 images have no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 14 elements on the page fail this check, rated moderate by axe-core.

The page has no <main> landmark, so screen-reader users cannot jump straight to the content.

5 visible links have no text or label, so screen readers cannot say where they go.

1 form field has no label, so screen readers announce an empty box and autofill guesses.

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

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.

Your meta description is 184 characters; Google truncates after about 160, so the end of your pitch is cut.

No Open Graph image (also missing: og:title, og:description), so links shared on LinkedIn, Slack or Facebook show no preview picture.

There is no robots.txt at topband.com/robots.txt, the first file search crawlers ask for.

No twitter:card tag. X falls back to Open Graph, which is incomplete here.

The homepage links to 63 pages on topband.com and 28 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no https://www.topband.com/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

https://www.topband.com/en, https://www.topband.com/en/esg, https://www.topband.com/en/investor-relation, https://www.topband.com/en/topband-job, https://www.topband.com/en/contact-us and https://www.topband.com/en/global-layout and 6 others all use the title “Control Board Manufacturer & Supplier in China - Topband”. Search engines can't tell which page to show for a search, so each competes with the others.

https://www.topband.com/en/esg, https://www.topband.com/en/investor-relation, https://www.topband.com/en/topband-job, https://www.topband.com/en/contact-us, https://www.topband.com/cn and https://www.topband.com/en/global-layout and 8 others have no meta description, so Google writes the search snippet from whatever text it finds.

https://www.topband.com/en/esg, https://www.topband.com/en/investor-relation, https://www.topband.com/en/topband-job, https://www.topband.com/en/contact-us, https://www.topband.com/cn and https://www.topband.com/en/global-layout and 8 others have no <h1> headline, so visitors and search engines get no clear main topic.

https://www.topband.com/en/esg, https://www.topband.com/en/investor-relation, https://www.topband.com/en/topband-job, https://www.topband.com/en/contact-us, https://www.topband.com/cn and https://www.topband.com/en/global-layout and 3 others took over 3 s to send their HTML from our server.

We fetched 15 pages linked from your homepage (of 47 found) and read each the way a search engine does.

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

No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

Your phone number appears as text but isn't a tel: link, so phone visitors can't tap to call.

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

The homepage carries about 866 words of visible text.

Before a visitor clicks anything, the page loads Google Analytics, Google Tag Manager and Hotjar (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 4 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 7 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.