corston.de website review

About 277 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.

12 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.5 s.

The page has 5,795 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

A phone's processor spends 5.5 s on main-thread work while loading, 2.2 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Optanon, hsappstatic.net and vitals.app and others), adding 1.0 MB and 1.0 s of main-thread time.

23 files are served with short cache lifetimes, so returning visitors download them again (305 KiB).

Your mobile performance score is 59. Pages that score under 90 lose visitors before the first paint.

About 41 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.

Optanon costs a phone 250 ms of main-thread work and 230 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.

12 long tasks block the main thread while loading, the longest for 218 ms. During a long task the page ignores taps.

2 images could be 86 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Polyfills for old browsers add 33 KiB JavaScript that modern phones do not need.

8 KiB could be saved by minifying JavaScript.

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.

3 KiB JavaScript is shipped twice across bundles.

Your largest element takes 10.4 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “By clicking “Accept All Cookies”, you agree to the storing …”.

The page becomes fully interactive after 13.4 s. Good is under 3.8 s.

Visually, the page fills in at 6.0 s (Speed Index). Good is under 3.4 s.

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 129 ms to 229 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' largest content (lcp) went from 1.9 s to 2.8 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Scripts block taps and scrolling for 399 ms in total while the page loads. Good is under 200 ms.

Your homepage downloads 3.8 MB in 232 requests on a phone: media 1.1 MB (3), scripts 1,000 KiB (64) and other files 863 KiB (121). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 1.07 g of CO₂e: 127.8 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

7 elements use ARIA attributes their role does not allow, which confuses screen readers.

Certain ARIA roles must be contained by particular parents: 7 elements on the page fail this check, rated critical by axe-core.

All page content should be contained by landmarks: 2 elements on the page fail this check, rated moderate by axe-core.

Elements with visible text labels do not have matching accessible names. (1 element).

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

2 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

The homepage links to 187 pages on corston.de and 38 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.

https://www.corston.com/en-us/collections/kew-back-boxes-trims and https://www.corston.com/en-us/collections/grove-back-boxes-trims all use the title “Electrical Boxes | Accessories | Switches & Outlets”. Search engines can't tell which page to show for a search, so each competes with the others.

https://www.corston.com/en-us/pages/kew-grove-explanation-video has no meta description, so Google writes the search snippet from whatever text it finds.

https://www.corston.com/en-us/collections/kew-back-boxes-trims and https://www.corston.com/en-us/collections/grove-back-boxes-trims use the same meta description. A description written for each page earns more clicks.

https://www.corston.com/en-us/pages/contact-us, https://www.corston.com/en-us/collections/kew-antique-brass, https://www.corston.com/en-us/collections/kew-bronze, https://www.corston.com/en-us/collections/kew-polished-nickel, https://www.corston.com/en-us/collections/kew-back-boxes-trims and https://www.corston.com/en-us/collections/kew-spare-parts and 9 others have no <h1> headline, so visitors and search engines get no clear main topic.

https://www.corston.com/en-us/pages/contact-us, https://www.corston.com/en-us/collections/kew-antique-brass, https://www.corston.com/en-us/collections/kew-bronze, https://www.corston.com/en-us/collections/kew-polished-nickel, https://www.corston.com/en-us/collections/kew-back-boxes-trims and https://www.corston.com/en-us/collections/kew-spare-parts 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.

We fetched 15 pages linked from your homepage (of 107 found) and read each the way a search engine does.

10 images failed to load on a phone, for example https://www.corston.com/en-us.

19 of 43 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

4 errors were logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

Social proof on the homepage: 1 trust badge. 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 carries about 312 words of visible text.

Before a visitor clicks anything, the page loads Amazon Ads, Google Ads, Google Tag Manager, Meta Pixel and Microsoft Ads and 3 mores (measured from a US location before any click). A consent tool (OneTrust) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 24 cookies, 1 of them by other companies (measured from a US location before any click).

Loading the homepage contacts 47 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.